41.01111 41.11111 -121.45083 -121.35083 Archived CCH Search Results
Search Results — 321 specimen records retrieved (321 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC118558  Achyrachaena mollis Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21441 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC92977  Achyrachaena mollis R. Fischer 2005-5-23 473 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. Near the old McArthur Swamp lands. 1013 Comment
  CHSC89703  Acmispon americanus var. americanus R. Fischer; J. Marr 2004-8-15 379 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected on Lava Springs Trail between Horr Pond and Crystal Springs. 1010 Comment
  CHSC118548  Acmispon nevadensis var. nevadensis Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21399 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128726  Acmispon nevadensis var. nevadensis Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21399 Shasta Extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CDA20538  Aegilops cylindrica K. Martyn 2005-6-3 PDR 1292147 Shasta Cascade Range; McArthur swamp. 0 Comment
  CHSC112436  Aegilops cylindrica Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18787 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC118566  Aegilops cylindrica Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21416 Shasta Along poor dirt road extending from end of the Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (ait) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC93209  Aegilops cylindrica R. Fischer 2005-7-18 600 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a road bed near Horr Pond and camp 7, also obs. on roadbed along the upper end of Big Lake. 1010 Comment
  JEPS120921  Aegilops cylindrica Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18787 Shasta On E side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  JEPS128766  Aegilops cylindrica Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21416 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC88742  Agoseris glauca var. laciniata R. Fischer; J. Marr 2004-5-23 256 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Spring Trail. Between Horr Pond and Big Lake. 1011 Comment
  HSC2915  Allium acuminatum C. L. Hitchcock 1940-5-27 6636 Shasta Near McArthur Comment
  UC843267  Allium acuminatum C. L. Hitchcock 1940-5-27 6636 Shasta near McArthur Comment
  CHSC89767  Alopecurus geniculatus R. Fischer; J. Marr 2004-5-22 420 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off road between McArthur and Rat Farm, E side. In vernal pool on mdw., part of the old McArthur Swamp. 1011 Comment
  CHSC93027  Ancistrocarphus filagineus R. Fischer 2005-4-18 634 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from the road bed of the main park road near the east end of Horr Pond. 1008 Comment
  CAS-BOT-BC59323  Antennaria argentea Alice Eastwood; John Thomas Howell 1940-6-11 7944 Shasta Near McArthur Comment
  HSC4657  Antennaria argentea Alice Eastwood, J. T. Howell 1940-6-11 7944 Shasta Near McArthur Comment
  CAS-BOT-BC59213  Antennaria dimorpha Alice Eastwood; John Thomas Howell 1940-6-11 7951 Shasta Near McArthur Comment
  CHSC88357  Anthemis arvensis R. Fischer; J. Marr 2004-5-22 241 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1008 Comment
  UC157680  Apocynum cannabinum Milo S. Baker 1899-8-15 Shasta Fall R. Lake Comment
  CAS-BOT-BC38976  Arctostaphylos malloryi Walter Knight; Irja Knight 1987-10-1 6077 Shasta Iron Mt., via Tilden Botanic Garden in Berkeley Comment
  CAS-BOT-BC38980  Arctostaphylos malloryi James I. Mallory; Albert Seneres; Steve Edwards 1981-2-20 s.n. Shasta Iron Mountain Comment
  CHSC89700  Artemisia arbuscula subsp. arbuscula R. Fischer; J. Marr 2004-8-16 383 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along rd. between McArthur and Rat Farm. Mdw on edge of the old McArthur Swamp. 1013 Comment
  CAS-BOT-BC177855  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-11 7936 Shasta Near McArthur Comment
  CAS-BOT-BC177858  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-11 7936 Shasta Near McArthur Comment
  OBI49334  Astragalus curvicarpus var. curvicarpus Lewis S. Rose 1940-6-11 40498 Shasta McArthur 1036 Comment
  SEINET3132598  Astragalus curvicarpus var. curvicarpus L. A. Rose 1940-6-11 40498 Shasta McArthur 1036 Comment
  CAS-BOT-BC182951  Astragalus filipes Alice Eastwood; John Thomas Howell 1940-6-11 7937 Shasta Near McArthur Comment
  NY658513  Astragalus filipes L. S. Rose 1940-6-11 40500 Shasta McArthur 1036.3 Comment
  UC1332122  Astragalus filipes Alice Eastwood, John Thomas Howell June 1940 7937 Shasta near McArthur; near McArthur Comment
  UC863078  Astragalus filipes Lewis S. Rose 1940-6-11 40500 Shasta McArthur 1036 Comment
  GH366300  Astragalus lemmonii L. S. Rose 1940-6-11 40504 Unknown 11 mi. w. of Nubieber 1219 Comment
Read comments
May 1 2013
  CAS-BOT-BC192958  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-11 7939 Shasta Near McArthur Comment
  CAS-BOT-BC194098  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-11 7939 Shasta Near McArthur Comment
  CHSC68775  Beckmannia syzigachne Vernon Oswald; B. Corbin, M. Dolan, G. Schoolcraft 1997-5-31 8529 Shasta Hollenbeck Swamp on the southeast side of Big Lake north of McArthur. 1008 Comment
  CAS-BOT-BC127966  Blepharipappus scaber Alice Eastwood; John Thomas Howell 1940-6-11 7947 Shasta Near McArthur Comment
  CHSC93197  Blepharipappus scaber R. Fischer 2005-5-23 482 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  CHSC118569  Brodiaea coronaria Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21417 Shasta Sides of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128720  Brodiaea coronaria Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21417 Shasta Nortward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC96200  Brodiaea coronaria subsp. coronaria R. Fischer 2006-7-20 915 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plant collected off east side of Rat Farm Road ca. 1 mile north of McArthur. Plant growing in a drainage swell on a sagebrush/Artemisia transmontane meadow. 1011 Comment
  CHSC118544  Bromus commutatus Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21415 Shasta Bottom of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128715  Bromus commutatus Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21415 Shasta Nortward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CDA20736  Bromus diandrus K. Kosta 2006-5-17 PDR 1340431 Shasta Found on edges of alfalfa field, Melvin Hoy property,Jesson Road, McArthur CA. Comment
  CHSC112471  Bromus hordeaceus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18783 Lassen Along the fence on the west side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles south of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC112683  Bromus hordeaceus Lowell Ahart; John Dittes 2013-6-9 18795 Shasta On the bank of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120922  Bromus hordeaceus Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18783 Shasta Along the fence on the W side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CDA21179  Capsella bursa-pastoris K. Martyn 2007-5-22 PDR 1361258 C Shasta Northern California; Field on Jim Day Rd, McArthur. 990 Comment
  CHSC112685  Carex athrostachya Lowell Ahart; John Dittes 2013-6-9 18789 Shasta On the banks of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120919  Carex athrostachya Lowell Ahart, John Dittes 2013-6-9 18789 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  JEPS113349  Carex comosa R. Fischer 2006-7-23 929 Shasta Ahjumawi Lava Springs State Park, 3 mi N of McArthur, on the W edge of the Modoc Plateau. Collected near S end of Big Lake, the W shore, at end of a long drainage arm adjacent park road. 1007 Comment
  CHSC93212  Carex pellita R. Fischer 2005-5-19 629 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along water edge of outer Horr Pond, southern island ring. 1007 Comment
  CHSC98414  Carex praegracilis R. Fischer 2006-7-23 875 Shasta Ahjumawi Lava Springs State Park, 3 miles N of McArthur, on the western edge of the Modoc Plateau. Grassy meadow near the water along the western shore of Big Lake, southern end. 1007 Comment
  CHSC94042  Castilleja attenuata R. Fischer 2005-5-23 707 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants were growing outside of park on Rat Farm Road on high mountain meadow that was once the edge of the old McArthur Swamp, 1 or 2 miles north of McArthur. 1011 Comment
  CHSC68726  Castilleja campestris subsp. campestris Vernon H. Oswald 1997-5-20 8468 Shasta Gravel road to McArthur Swamp and Big Lake 3.0 mi north of McArthur. 1005 Comment
  CHSC93053  Castilleja campestris subsp. campestris R. Fischer 2005-5-23 484 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing on transmontane meadow north of McArthur along Rat Farm Road. Comment
  CHSC118563  Castilleja chromosa Lowell Ahart; John Dittes, Josephine Guardino 2017-7-15 21411 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, abour 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128765  Castilleja chromosa Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21411 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC118567  Castilleja lacera Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21410 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC93106  Castilleja lacera R. Fischer 2005-5-23 487 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Plants growing on transmontane meadow north of McArthur along Rat Farm Road. 1013 Comment
  JEPS128764  Castilleja lacera Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21410 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  UC886499  Castilleja lacera C. L. Hitchcock 1940-5-27 6631 Shasta near McArthur Comment
  CHSC93054  Castilleja lineariloba R. Fischer 2005-5-23 481 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing on transmontane meadow north of McArthur along Rat Farm Road. 1013 Comment
  CHSC95139  Caulanthus lasiophyllus R. D. Fischer 2005-4-14 855 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Rat Farm Road ca. 2 miles north of McArthur on meadowland adjacent to the old McArthur Swamp. 1011 Comment
  CAS-BOT-BC276745  Chaenactis douglasii var. douglasii Alice Eastwood; John Thomas Howell 1940-6-11 7938 Shasta Near McArthur Comment
  UC894468  Chaenactis glabriuscula var. heterocarpha Lewis S. Rose 1940-6-11 40501 Shasta McArthur 1036 Comment
  RSA816  Chrysothamnus nauseosus subsp. albicaulis E. R. Johnson 1928-8-31 1190 Shasta Fall River Valley Comment
  UCSC000503  Cicuta douglasii L. McArthur 1947-7-11 s.n. Shasta McArthur Comment
  CDA19141  Cirsium arvense K. Martyn 2001-7-2 PDR 1198399 Shasta Modoc Plateau; McArthur 0 Comment
  CHSC89674  Cirsium scariosum R. Fischer; J. Marr 2004-5-22 376 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along rd. between McArthur and Rat Farm. Mdw on edge of the old McArthur Swamp. 1013 Comment
  CHSC93095  Clarkia gracilis R. Fischer 2005-5-23 453 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Growing outside of park along Rat Farm Road near the town of McArthur. 1010 Comment
  SBBG28047  Clarkia gracilis C. L. Hitchcock 1940-5-27 Shasta near McArthur Comment
  CHSC68720  Clarkia gracilis subsp. gracilis Vernon H. Oswald 1997-5-20 8465 Shasta Gravel road to McArthur Swamp and Big Lake 1.0 mi north of McArthur. 1005 Comment
  CAS-BOT-BC163173  Clarkia lassenensis Alice Eastwood; John Thomas Howell 1940-6-11 7960 Shasta Near McArthur Comment
  UC930760  Clarkia purpurea C. L. Hitchcock 1940-5-27 6639 Shasta near McArthur Comment
  JEPS11706  Collinsia parviflora F. W. Pennell 1940-6-7 25721 Shasta 2-3 mi e McArthur Comment
  JEPS6221  Collinsia parviflora Alma U. Ames 1918-3-24 Shasta McArthur Comment
  UC1012487  Collinsia parviflora Francis W. Pennell 1940-6-7 25721 Shasta 2-3 mi e of McArthur (Route 299); Route 299 1036 Comment
  CHSC92995  Comandra umbellata subsp. californica R. Fischer 2005-4-15 643 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected on a slope between Horr Pond and Crystal Springs. 1011 Comment
  POM301620  Crataegus castlegarensis Carl B. Wolf 1941-7-25 11071 Shasta along the Fall River, 1 miles NW of Fall River Mills 976 Comment
  RSA25622  Crataegus castlegarensis Carl B. Wolf 1941-7-25 11071 Shasta along the Fall River, 1 miles NW of Fall River Mills 976 Comment
  SEINET8506925  Crataegus monogyna D. W. Taylor 2008-5-14 20200 Shasta Fall River Mills, along the western bank of Fall River Lake in far North end of the county park 1006 Comment
  CHSC88741  Crepis acuminata R. Fischer; J. Marr 2004-5-23 255 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Spring Trail. Between Horr Pond and Big Lake. 1011 Comment
  CHSC93337  Crepis bakeri R. Fischer 2005-5-23 483 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  UC581217  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2381 Shasta river terrace 1/2 mi ne Fall River Mills (crest and s-facing slope) 1000 Comment
  UC581302  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2382 Shasta crest and s-facing slope of river terrace 1/2 mi ne Fall River Mills 1000 Comment
  CHSC118547  Crepis occidentalis subsp. occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21399 -A Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC88310  Crepis occidentalis subsp. occidentalis R. Fischer; J. Marr 2004-5-23 194 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail. At edge of meadow on the western shore of the southern end of Big Lake. 1010 Comment
  JEPS22542  Crocidium multicaule Alma U. Ames 1918-3-28 Shasta near McArthur Comment
  CHSC89715  Cymopterus terebinthinus var. californicus R. Fischer; J. Marr 2004-5-28 399 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along Lava Springs Trail E Crystal Springs. 1051 Comment
  CHSC89763  Deschampsia danthonioides R. Fischer; J. Marr 2004-5-22 414 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off road between McArthur and Rat Farm, E side. In vernal pool on mdw., part of the old McArthur Swamp. 1008 Comment
  CHSC89688  Descurainia pinnata subsp. halictorum R. Fischer; J. Marr 2004-5-27 392 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected off Lava Springs Trail between Horr Pond and Crystal Springs. 1011 Comment
  JEPS48627  Descurainia sophia Alma U. Ames 1918-3-28 Shasta bank of Pit River (McArthur); McArthur Comment
  CHSC68716  Downingia insignis Vernon H. Oswald 1997-5-20 8466 Shasta Gravel road to McArthur Swamp and Big Lake 3.0 mi north of McArthur. 1005 Comment
  CHSC88348  Downingia insignis R. Fischer; J. Marr 2004-5-22 231 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. In vernal pool on grasslands, part of the old McArthur Swamp. 1010 Comment
  CHSC88753  Downingia pulcherrima R. Fischer; J. Marr 2004-5-22 268 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Found in vernal pools on grazing land of the old McArthur Swamp. Located off access rd. to ALSSP between McArthur and Rat Farm. 1010 Comment
  CHSC509  Draba verna P. Delaplane 1965-4-3 35 Shasta Near Squaw hole rocks. Squaw Creek area of the Harry Horr Ranch. Ca. 5 mi. ne of Glenburn. 1219 Comment
  CHSC112693  Elatine californica Lowell Ahart; John Dittes 2013-6-9 18779 Shasta Bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC93203  Eleocharis coloradoensis R. Fischer 2005-7-18 520 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On the mud bar of one of the islands ringing the outer boundaries of Horr Pond. Located at the eastern end of the island chain and at the water's edge. 1007 Comment
  CHSC96181  Eleocharis coloradoensis R. Fischer 2006-7-20 889 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on the southern boundary of Horr Pond, on a low levee, at the water line. 1007 Comment
  CHSC8753  Eleocharis macrostachya S. Chulasmai 1966-4-30 13 Shasta Mc-Arthur rd. Comment
  CHSC112400  Eleocharis parishii Lowell Ahart; John Dittes 2013-6-9 18790 Shasta On the banks of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120920  Eleocharis parishii Lowell Ahart, John Dittes 2013-6-9 18790 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0106688  Eleocharis parishii Lowell Ahart, John Dittes 2013-6-9 18790 Shasta Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air miles north of McArthur, Fall River Valley, McArthur Swamp. 290 Comment
  CHSC96179  Elodea nuttallii R. Fischer 2006-7-23 891 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from an arm of water feeding Big Lake, the southern end and western shore. 1007 Comment
  CHSC92974  Elymus caput-medusae R. Fischer 2005-5-23 486 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. Near the old McArthur Swamp lands. 1013 Comment
  CHSC89779  Elytrigia pontica subsp. pontica R. Fischer; J. Marr 2004-8-14 434 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off Lava Springs Trail, between Horr Pond and Big Lake. At edge of mdw. 1010 Comment
  CHSC118574  Epilobium torreyi Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21408 Shasta Bottom and sides of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128717  Epilobium torreyi Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21408 Shasta Northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CAS-BOT-BC299449  Ericameria nauseosa var. speciosa E. R. Johnson 1928-8-31 1190 Shasta Fall River Valley Comment
  CAS-BOT-BC299450  Ericameria nauseosa var. speciosa E. R. Johnson 1928-8-31 1190 Shasta Fall River Valley Comment
  CHSC89675  Ericameria parryi var. latior R. Fischer; J. Marr 2004-8-12 354 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Along rd. between McArthur and Rat Farm. Edge of old McArthur Swamp. 1011 Comment
  CHSC96213  Erigeron pumilus var. intermedius R. Fischer 2006-5-14 955 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected on a moist, grassy slope adjacent a conic depression pond near the lower and western edge of Big Lake. 1007 Comment
  CHSC89776  Eriogonum nudum var. pubiflorum R. Fischer 2004-7-2 330 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected near camp 7. 1013 Comment
  CAS-BOT-BC271961  Eriogonum sphaerocephalum var. halimioides Mrs. A. H. Rodda 1932-7-1 s.n. Shasta Macarthur [McArthur] Comment
  CHSC118559  Eriogonum umbellatum var. nevadense Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21409 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128712  Eriogonum umbellatum var. nevadense Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21409 Shasta Extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC118561  Eriophyllum lanatum var. grandiflorum Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21397 Shasta A little east of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128711  Eriophyllum lanatum var. grandiflorum Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21397 Shasta Northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC67626  Eryngium mathiasiae James D. Jokerst 1989-7-19 3141 D Shasta E side of road to Big Lake, ca. 0.66 mi N of McArthur. Comment
  CHSC88763  Eryngium mathiasiae R. Fischer 2004-7-7 278 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. In dry vernal pools of the grazing land of old McArthur Swamp. Located off access rd. to ALSSP between McArthur and Rat Farm. 1008 Comment
  CHSC112778  Festuca myuros Lowell Ahart; John Dittes 2013-6-9 18798 Shasta On the bank of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC112779  Festuca myuros Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18784 Lassen Along a fence on the west side of McArthur Diversion Canal, 2.1 air-miles south of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120923  Festuca myuros Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18784 Shasta Along the fence on the W side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  JEPS120927  Festuca myuros Lowell Ahart, John Dittes 2013-6-9 18798 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  JEPS61940  Fritillaria pudica Kate J. Stirring 1919-4-1 Shasta McArthur Comment
  JEPS61898  Fritillaria recurva Mrs. R. J. Stirring 1919-4-24 Shasta McArthur Comment
  UC896932  Gnaphalium palustre C. L. Hitchcock 1940-5-27 6629 Shasta near McArthur Comment
  CAS-BOT-BC314621  Grindelia hirsutula Barrett Anderson 1986-7-9 3121 Shasta Fall River Valley near McArthur along Hwy. 299 1005 Comment
  CHSC68919  Grindelia nana Vernon Oswald 1997-6-28 8654 Shasta Gravel road to Rat Farm (on Big Lake) 3.0 mi north of McArthur. In meadow. 1005 Comment
  CHSC88767  Grindelia nana R. Fischer 2004-7-7 282 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along ALSSP access rd. between McArthur and Rat Farm, closer to McArthur. 1010 Comment
  GH417686  Grindelia nana B. Anderson 1986-7-9 3121 Unknown Fall River Valley near McArthur along Hwy 299 Comment
  CAS-BOT-BC305366  Helianthus annuus Barrett Anderson 1986-7-9 3120 Shasta Fall River Valley near McArthur along Hwy 299 1005 Comment
  CHSC71692  Heliotropium curassavicum Vernon H. Oswald 1998-8-30 9558 Shasta Dirt road heading north of McArthur to the boat ramp on Big Lake. Roadside. 1005 Comment
  CHSC96279  Hesperolinon micranthum R. Fischer 2006-7-21 933 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected adjacent main park road west of Horr Pond, growing in disturbed soil. 1008 Comment
  CDA21180  Holosteum umbellatum K. Martyn 2007-5-22 PDR 1361258 B Shasta Northern California; Single location in field at 26312 Jim Day Rd, McArthur. 990 Comment
  CHSC93213  Holosteum umbellatum subsp. umbellatum R. Fischer 2005-5-21 614 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected in a meadow at the south end of Big Lake as it nears Horr Pond. 1008 Comment
  CHSC93032  Hypericum perforatum R. Fischer 2005-7-17 534 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In roadbed on main park road on the west side and southern end of Big Lake. At edge of meadow. 1010 Comment
  CHSC93010  Isoetes nuttallii R. Fischer 2005-5-23 510 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Rat Farm Road on the meadow at edge of the old McArthur Swamp. 1013 Comment
  CHSC93331  Isoetes nuttallii R. Fischer 2004-5-22 623 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from a vernal pool on the east side of Rat Farm Road ca. 2.5 miles north of McArthur. 1016 Comment
  CHSC89788  Juncus bufonius var. bufonius R. Fischer; J. Marr 2004-5-22 421 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off road between McArthur and Rat Farm, E side. In vernal pool on mdw, part of the old McArthur Swamp. 1011 Comment
  RSA702147  Juncus ensifolius R. Fischer, Jenny Marr 2004-8-15 365 Shasta Ahiumawi Lava Springs State Park, 3 miles N of McArthur, on western edge Modoc Plateau. Located at edge of Ya-She pond. 1009 Comment
  CHSC118572  Juncus occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21414 Shasta Near the sides of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128721  Juncus occidentalis Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21414 Shasta Nortward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  UC76013  Lactuca ludoviciana Milo S. Baker 1899-8-15 Shasta Fall R. Lake Comment
  CHSC112402  Lepidium appelianum Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18785 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120910  Lepidium appelianum Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18785 Shasta On E side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CDA21178  Lepidium campestre K. Martyn 2007-5-22 PDR 1361258 A Shasta Northern California; Northern border of field at 26312 Jim Day Rd, McArthur. 990 Comment
  CHSC112401  Lepidium campestre Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18782 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120902  Lepidium campestre Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18782 Shasta About 100 yards W of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CDA42959  Lepidium chalepense L. Ahart, John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC112394  Lepidium chalepense Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120903  Lepidium chalepense Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18786 Shasta On E side of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CDA19029  Lepidium latifolium D. McBroome 2000-11-1 PDR 1197778 Shasta Sierra Nevada; In Hallenbock Swamp, N of McArthur, S of Big Lake. 0 Comment
  CHSC88305  Lepidium latifolium R. Fischer; J. Marr 2004-5-22 189 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1008 Comment
  CHSC118545  Lepidium latipes var. latipes Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21404 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC88304  Lepidium perfoliatum R. Fischer; J. Marr 2004-5-22 189 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1027 Comment
  CHSC118560  Leptosiphon bolanderi Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21407 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CAS-BOT-BC36536  Lithocarpus densiflorus var. echinoides Edith Patterson 1908-8-1 s.n. Shasta Iron Mt. Comment
  CHSC68774  Lithospermum arvense Vernon Oswald; B. Corbin, M. Dolan, G. Schoolcraft 1997-5-31 8528 Shasta Hollenbeck Swamp on the southeast side of Big Lake north of McArthur. In a meadow on the east side of the swamp. 1008 Comment
  JEPS94474  Lithospermum arvense Vernon Oswald, B. Corbin, M. Dolan and G. Schoolcraft 1997-5-31 8528 Shasta on e side of Hollenbeck Swamp on the se side of Big Lake n of McArthur Big Lake; , Hollenbeck Swamp 1008 Comment
  JEPS94615  Lithospermum arvense Vernon Oswald, B. Corbin, M. Dolan and G. Schoolcraft 1997-5-31 8528 Shasta n McArthur (se side of lake); Big Lake, Hollenbeck Swamp 1008 Comment
  CHSC93046  Lomatium bicolor var. leptocarpum R. Fischer 2005-5-23 455 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Growing outside of park along Rat Farm Road near the stockyard of the McArthur fairgrounds. 1010 Comment
  CHSC93047  Lomatium bicolor var. leptocarpum R. Fischer 2005-5-23 455 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Growing outside of park along Rat Farm Road near the stockyard of the McArthur fairgrounds. 1010 Comment
  A422983  Lonicera interrupta A. Eastwood & J. T. Howell 1940-6-11 7963 Unknown Eastern Fall River Valley Comment
  CAS-BOT-BC240838  Lonicera interrupta Alice Eastwood; John Thomas Howell 1940-6-11 7963 Shasta Eastern Fall River Valley Comment
  UC725846  Lotus nevadensis var. nevadensis A. A. Heller 1941-6-26 16235 Shasta about 2 mi e McArthur Comment
  UC864802  Lotus nevadensis var. nevadensis Lewis S. Rose 1940-6-11 40502 Shasta McArthur 1036 Comment
  CAS-BOT-BC208818  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47439 Shasta Highway 299, Fall River Mills, 1.4 miles northeast. Comment
  CAS-BOT-BC208819  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47441 Shasta Highway 299, McArthur, in town. Comment
  CAS-BOT-BC208820  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47440 Shasta Highway 299, McArthur, in town. Comment
  CAS-BOT-BC208828  Lupinus argenteus var. heteranthus Alice Eastwood; John Thomas Howell 1940-6-11 7942 Shasta Near McArthur. Comment
  CHSC88318  Lupinus bicolor R. Fischer; J. Marr 2004-5-22 201 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located se of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1008 Comment
  CHSC93029  Lupinus bicolor R. Fischer 2005-4-18 635 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected adjacent main park road at east end of Horr Pond along the dryer meadow edges. 1010 Comment
  CHSC93304  Lupinus lepidus var. confertus R. Fischer 2005-7-14 546 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected off Rat Farm Road on the open sage meadow north of McArthur. 1014 Comment
  CHSC112399  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18781 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC88311  Lupinus microcarpus var. microcarpus R. Fischer; J. Marr 2004-5-22 195 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located se of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1027 Comment
  CHSC92993  Lupinus microcarpus var. microcarpus R. Fischer 2005-5-23 485 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  CHSC93028  Lupinus microcarpus var. microcarpus R. Fischer 2005-5-23 528 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collection made along Rat Farm Road, north of McArthur. 1013 Comment
  JEPS120901  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18781 Shasta About 100 yards W of the north-south road, on the W side of McArthur Diversion Canal, 2.1 air miles S of Rat Farm Boat Launch, 1.2 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC118557  Lupinus polycarpus Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21405 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC71705  Lycopus americanus Vernon H. Oswald 1998-8-30 9553 Shasta North of McArthur on the dike along Big Lake north of the boat launch ramp at Rat Ranch. 1005 Comment
  UC70436  Lycopus asper Milo S. Baker 1899-8-15 Shasta Fall R. Lake Comment
  CDA19052  Lythrum salicaria C. Benefield 2000-8-1 PDR 1198616 Shasta Modoc Plateau; along Fall River, between McArthur and Fall River Mills. 0 Comment
  CHSC71708  Lythrum salicaria Vernon H. Oswald 1998-8-30 9554 Shasta North of McArthur on the dike along Big Lake north of the boat launch ramp at Rat Ranch. 1005 Comment
  UCR148820  Lythrum salicaria C. Benefield 2000-8-1 PDR 1198616 Shasta Modoc Plateau, 8-10 acres along Fall River, between McArthur and Fall River Mills Comment
  CAS-BOT-BC344537  Madia exigua Alice Eastwood; John Thomas Howell 1940-6-11 7950 Shasta Near McArthur Comment
  CHSC118573  Madia exigua Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21398 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128714  Madia exigua Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21398 Shasta Extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CAS-BOT-BC349362  Microseris nutans Alice Eastwood; John Thomas Howell 1940-6-11 7940 Shasta Near McArthur Comment
  CAS-BOT-BC388873  Minuartia douglasii Alice Eastwood; John Thomas Howell 1940-6-11 7934 Shasta Near McArthur Comment
  CHSC96178  Myriophyllum sibiricum R. Fischer 2006-7-22 892 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from the shallow waters of Horr Pond. 1007 Comment
  CHSC68920  Najas flexilis Vernon Oswald; Beth Corbin, Mike Dolan 1997-6-28 8655 Shasta North of McArthur on the arm of Big Lake leading to the boat launch ramp at the Rat Farm. 1005 Comment
  CHSC118571  Navarretia atractyloides Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21396 Shasta Along poor dirt road, near shoreline of Fall River Lake, about 0.8 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1007 Comment
  JEPS128722  Navarretia atractyloides Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21396 Shasta About 0.8 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC118565  Navarretia heterandra Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21392 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills. Fall River Valley. 1008 Comment
  CHSC88312  Navarretia heterandra R. Fischer; J. Marr 2004-5-22 195 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located se of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1008 Comment
  JEPS128769  Navarretia heterandra Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21392 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC118576  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21394 Shasta Seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128767  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21394 Shasta Seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC88317  Navarretia leucocephala subsp. leucocephala R. Fischer; J. Marr 2004-5-22 200 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located se of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. In vernal pool. Part of the old McArthur Swamp. 1008 Comment
  CHSC93105  Navarretia leucocephala subsp. minima R. Fischer 2005-5-23 512 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc plateau. Plants growing along Rat Farm Road on the transmontane meadow at edge of the old McArthur swamp. 1013 Comment
  UC1602110  Navarretia leucocephala subsp. minima C. L. Hitchcock 1940-5-27 6628 Shasta near McArthur Comment
  CHSC118554  Navarretia tagetina Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21395 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  UC856889  Navarretia tagetina C. L. Hitchcock 1940-5-27 6637 Shasta near McArthur Comment
  CHSC93208  Nepeta cataria R. Fischer 2005-7-18 529 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected at east end of Horr Pond at water edge. 1007 Comment
  CDA33591  Nuphar polysepala Dale Woods, V. Popescu, D. Kratville 2010-6-3 Shasta South of Big Lake, Ahjumawi State Park, on bank opposite the diversion dam. 0 Comment
  CHSC92996  Oenothera flava subsp. flava R. Fischer; J. Marr 2005-5-23 488 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  CHSC92997  Oenothera flava subsp. flava R. Fischer; J. Marr 2005-5-23 488 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On meadow north of McArthur along Rat Farm Road. This mdw. area is near the old McArthur Swamp lands. 1013 Comment
  UC1738842  Orcuttia tenuis Dean W. Taylor 1987-6-9 9038 Shasta Green Place Reservoir south of Day, 1036 Comment
  CAS-BOT-BC316868  Packera eurycephala var. eurycephala C. L. Hitchcock 1940-5-27 6635 Shasta near McArthur Comment
  UC831737  Packera eurycephala var. eurycephala C. L. Hitchcock 1940-5-27 6635 Shasta near McArthur Comment
  CHSC88355  Peraphyllum ramosissimum R. Fischer; J. Marr 2004-5-28 239 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Lava Springs Trail just east of Crystal Springs. Meadow. 1010 Comment
  CHSC112472  Persicaria lapathifolia Lowell Ahart; John Dittes 2013-6-9 18792 Shasta On the bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120907  Persicaria lapathifolia Lowell Ahart, John Dittes 2013-6-9 18792 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0118767  Persicaria lapathifolia Lowell A. Ahart, John Dittes 2013-6-9 18792 Shasta Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  UC73698  Phacelia thermalis Milo S. Baker 1898-7-12 388 Shasta Fall River Valley Comment
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Sep 6 2010
  CDA33437  Phalaris arundinacea Dale Woods 2010-7-1 Shasta Southwest of Horr Pond, northwest of Arthur, near Fall River diversion dam. 0 Comment
  JEPS46823  Pinus lambertiana J. C. Stanley 1918-10-13 Shasta McArthur Comment
  JEPS46863  Pinus ponderosa J. C. Stanley 1918-10-13 Shasta McArthur Comment
  CHSC118555  Plagiobothrys leptocladus Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21403 Shasta Bottom of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC118556  Plagiobothrys leptocladus Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21403 A Shasta Bottom of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128713  Plagiobothrys leptocladus Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21403 Shasta Northward into northeast end of Fall River Lake, 740 feet northwest from the end of Mackey's Cove Road, about about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  GH420163  Plagiobothrys scouleri var. penicillatus A. Eastwood & J. T. Howell 1940-6-11 7957 Unknown near McArthur Comment
  CHSC93202  Plagiobothrys stipitatus var. micranthus R. Fischer 2005-5-23 508 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Rat Farm Road near McArthur Fairgrounds in vernal depressions. 1013 Comment
  UCD90606  Poa bulbosa Alan A. Beetle; G. L. Stebbins Jr. 1942-5-30 3361 Shasta northeastern part of county, at McArthur. Comment
  UCD90702  Poa bulbosa R. Tofsrud 1948-5-1 s.n. Shasta McArthur. Comment
  UCD91831  Poa pratensis A. A. Beetle; G. L. Stebbins Jr. 1942-5-30 3592 Shasta northeastern part of county; at McArthur. Comment
  CAS-BOT-BC237663  Poa secunda C. L. Hitchcock 1940-5-27 6634 Shasta Near McArthur Comment
  GH360975  Poa secunda C. L. Hitchcock 1940-5-27 6634 Unknown near McArthur Comment
  POM260284  Poa secunda C. L. Hitchcock 1940-5-27 6634 Shasta near McArthur Comment
  HSC10668  Poa secunda subsp. secunda C. L. Hitchcock 1940-5-27 6634 Shasta Near McArthur Comment
  UC820710  Poa secunda subsp. secunda C. L. Hitchcock 1940-5-27 6634 Shasta near McArthur Comment
  CHSC94093  Polygonum aviculare R. Fischer 2005-5-23 454 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Growing outside of park along Rat Farm Road near the stockyard of the McArthur fairgrounds. 1010 Comment
  CHSC118562  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21418 Shasta Bottom of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC88313  Polygonum polygaloides subsp. confertiflorum R. Fischer; J. Marr 2004-5-22 196 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located se of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. In vernal pool. Part of the old McArthur Swamp. 1008 Comment
  JEPS128770  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21418 Shasta Bottom of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  UC726559  Polygonum polygaloides subsp. confertiflorum A. A. Heller 1938-6-24 15230 Shasta about 2 mi e McArthur 1036 Comment
  UC850165  Polygonum polygaloides subsp. confertiflorum A. A. Heller 1938-6-24 15230 Shasta just e McArthur 1036 Comment
  CHSC93199  Polypogon monspeliensis R. Fischer 2005-7-18 463 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. On portion of the southern island ring of Horr Pond at water edge. 1007 Comment
  CHSC88739  Potentilla millefolia var. klamathensis R. Fischer; J. Marr 2004-5-26 253 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located on mdw., at water edge, between Big Lake and Horr Pond. 1008 Comment
  CHSC112398  Potentilla rivalis Lowell Ahart; John Dittes 2013-6-9 18794 Shasta On the bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120913  Potentilla rivalis Lowell Ahart, John Dittes 2013-6-9 18794 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CAS-BOT-BC156395  Prunus virginiana var. demissa Elmer I. Applegate 1929-6-23 5873 Shasta [Pitt] Pit River near Fall River Mills, eastern Shasta County Comment
  CHSC89636  Prunus virginiana var. demissa R. Fischer 2004-7-5 338 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected a little S Ya-She pond. 1010 Comment
  JEPS48297  Pseudotsuga menziesii var. menziesii Kate Jared Stirring 1918-11-22 Shasta McArthur Fall River Comment
  JEPS48435  Pseudotsuga menziesii var. menziesii Kate Jared Stirring 1918-11-22 Shasta McArthur Fall River, McArthur Comment
  CAS-BOT-BC361724  Psilocarphus brevissimus var. brevissimus Alice Eastwood; John Thomas Howell 1940-6-11 7949 Shasta Near McArthur Comment
  CHSC118568  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21393 Shasta Seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC89706  Psilocarphus brevissimus var. brevissimus R. Fischer; J. Marr 2004-5-22 391 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along rd. between McArthur and Rat Farm, E side of road. In vernal pool on mdw on edge of the old McArthur Swamp. 1011 Comment
  JEPS128719  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21393 Shasta Northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CAS-BOT-BC361851  Psilocarphus oregonus Alice Eastwood; John Thomas Howell 1940-6-11 7948 Shasta Near McArthur Comment
  CHSC118570  Psilocarphus oregonus Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21400 Shasta Bottom of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile norhwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128718  Psilocarphus oregonus Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21400 Shasta Northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CDA42960  Puccinellia lemmonii L. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC112789  Puccinellia lemmonii Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18788 Lassen Depression, on the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120925  Puccinellia lemmonii Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen In a depression on the S side of the road, on the S side of the McArthur Diversion Canal, 0.32 miles E of the Tule River, 2.8 air miles NW of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0042600  Puccinellia lemmonii Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. 1008 Comment
  CHSC118543  Purshia tridentata var. tridentata Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21413 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  JEPS128716  Purshia tridentata var. tridentata Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21413 Shasta Extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC96177  Ranunculus aquatilis R. Fischer 2006-7-24 893 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. From the shallow waters of Horr Pond, the southern edge on the lee side (pond side) of a barrier/levee island. 1007 Comment
  CHSC95141  Ranunculus californicus var. californicus R. D. Fischer 2005-4-14 861 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Rat Farm Road ca. 2 miles north of McArthur on meadowland adjacent to the old McArthur Swamp. 1011 Comment
  UC827919  Ranunculus occidentalis C. L. Hitchcock 1940-5-27 6633 Shasta near McArthur Comment
  SEINET191903  Ranunculus occidentalis var. eisenii C. L. Hitchcock 1940-5-27 6633 Shasta Near McArthur Comment
  CHSC118546  Ranunculus occidentalis var. occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21412 Shasta Bottom and sides of the seasonal swale passing northward into northeast end of Fall River Lake, 740 feet northwest from end of Mackey's Cove Road, about 0.6 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC95204  Ranunculus occidentalis var. ultramontanus R. Fischer 2005-4-18 860 Shasta McArthur. Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along Rat Farm Road ca. 2 miles north of McArthur on meadowland adjacent to old McArthur Swamp. 1011 Comment
  CHSC112397  Ranunculus sardous Lowell Ahart; John Dittes 2013-6-9 18793 Shasta On the bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120909  Ranunculus sardous Lowell Ahart, John Dittes 2013-6-9 18793 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0118765  Ranunculus sardous Lowell A. Ahart, John Dittes 2013-6-9 18793 Shasta Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC88354  Ribes roezlii var. roezlii R. Fischer; J. Marr 2004-5-28 238 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Located along Lava Springs Trail just east of Crystal Springs. 1010 Comment
  CAS-BOT-BC363118  Rigiopappus leptocladus Alice Eastwood; John Thomas Howell 1940-6-11 7959 Shasta Near McArthur Comment
  CHSC118564  Rigiopappus leptocladus Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21442 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest to airport runway, aobut 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1008 Comment
  CHSC92969  Rigiopappus leptocladus R. Fischer 2005-5-23 513 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Along Rat Farm Road on the meadow at edge of the old McArthur Swamp. 1013 Comment
  JEPS128763  Rigiopappus leptocladus Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21402 Shasta Along poor dirt road extending from end of Mackey's Cove Road to northeast shore of Fall River Lake, about 0.5 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CHSC88748  Rosa R. Fischer; J. Marr 2004-5-27 263 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located off Lava Springs Trail between Horr Pond and Crystal Springs. 1008 Comment
  CDA33445  Rumex crispus Dale Woods 2010-7-1 Shasta Southwest of Horr Pond, northwest of Arthur, near Fall River diversion dam. 0 Comment
  CHSC93306  Rumex fueginus R. Fischer 2005-7-18 549 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur on the western edge of the Modoc Plateau. Plants collected from mud bar on an off shore levee near western edge of Horr Pond. 1007 Comment
  UC481924  Salix exigua var. hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen at edge of Pit River McArthur 960 Comment
  CAS-BOT-BC104044  Salix hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen McArthur, at edge of Pit River 950 Comment
  GH382948  Salix hindsiana N. F. Bracelin 1931-6-29 485 Unknown McArthur, at edge of Pit River Comment
  NY187518  Salix hindsiana N. F. Bracelin 1931-6-29 485 Lassen McArthur 960 Comment
  CHSC94040  Salix lasiolepis var. lasiolepis R. Fischer 2005-4-19 705 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Tree growing near edge of main park road east of Crystal Springs in the riparian cover along water edge. 1010 Comment
  CHSC89780  Salsola tragus R. Fischer; J. Marr 2004-8-12 431 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located off road between McArthur and Rat Farm, E side. On pastureland, part of the old McArthur Swamp. 1011 Comment
  CHSC118575  Salvia aethiopis Lowell Ahart; John Dittes, Josephine Guardino 2017-6-15 21406 Shasta East of a poor dirt road, near Fall River Lake, about 0.8 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. 1007 Comment
  JEPS128768  Salvia aethiopis Lowell Ahart, John Dittes, Josephine Guardino 2017-6-15 21406 Shasta East of a poor dirt road, near Fall River Lake, about 0.8 mile northwest of airport runway, about 1.2 miles (air) north of Fall River Mills, Fall River Valley. Comment
  CDA37187  Scirpus acutus var. occidentalis CDFA Staff 2004-6-24 s.n. Shasta At a diversion dam, near Big lake, northwest of McArthur. 0 Comment
  CHSC96278  Scirpus acutus var. occidentalis R. Fischer 2006-7-23 934 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected along the shore line of Big Lake near the southern end and western side. 1008 Comment
  CHSC93217  Scrophularia lanceolata R. Fischer 2005-4-17 581 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants collected from out crop on an east facing hillside opening above the mouth of Big Lake. 1033 Comment
  CHSC96207  Scrophularia lanceolata R. Fischer 2006-5-15 961 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Plants growing among volcanic boulder outcrops on an east facing slope above the lower end of Big Lake. 1018 Comment
  CHSC89665  Senecio hydrophilus R. Fischer; J. Marr 2004-9-27 342 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along northern shores Ya-She waterways. On mdws, near water, throughout the park. 1008 Comment
  CHSC88347  Sidalcea oregana subsp. oregana R. Fischer; J. Marr 2004-5-22 230 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. SE of Ahjumawi LSSP, on access rd. to Rat Farm, n. of McArthur. Part of the old McArthur Swamp. 1010 Comment
  HSC16022  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-27 6630 Shasta Near McArthur Comment
  UC871444  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-27 6630 Shasta near McArthur; near McArthur Comment
  CHSC71728  Solanum dulcamara Vernon H. Oswald 1998-8-30 9555 Shasta North of McArthur on the dike along Big Lake north of the boat launch ramp at Rat Ranch. 1005 Comment
  CHSC88351  Solanum dulcamara R. Fischer; J. Marr 2004-5-25 235 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. At edge of water between Horr Pond and Big Lake. 1007 Comment
  CHSC88307  Solanum parishii R. Fischer; J. Marr 2004-5-23 191 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail between Horr Pond and Crystal Springs. 1008 Comment
  CHSC93326  Stellaria media R. Fischer 2005-5-21 631 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from meadow edge near the eastern end of Horr Pond. 1007 Comment
  CHSC89694  Symphyotrichum ascendens R. Fischer; J. Marr 2004-8-14 362 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Located on W shore, near mouth of Big Lake. In mdw roadbed of Lava Springs Trail. 1010 Comment
  CHSC112791  Trifolium hybridum Lowell Ahart; John Dittes 2013-6-9 18796 Shasta Along the northeast side of the fence, about 20 yards east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120914  Trifolium hybridum Lowell Ahart, John Dittes 2013-6-9 18796 Shasta Along the NE side of the fence, about 20 yards E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC93319  Trifolium repens R. Fischer 2005-5-21 556 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected from road bed of main park road along the west shore, south end, of Big Lake. Along length of park road. 1010 Comment
  HSC3049  Triteleia hyacinthina C. L. Hitchcock 1940-5-27 6632 Shasta Near McArthur Comment
  SEINET188105 Image available Triteleia hyacinthina C. L. Hitchcock 1940-5-27 6632 Shasta Near McArthur Comment
  UC843576  Triteleia hyacinthina C. L. Hitchcock 1940-5-27 6632 Shasta near McArthur Comment
  CHSC71729  Verbena hastata Vernon H. Oswald 1998-8-30 9556 Shasta North of McArthur on the dike along Big Lake north of the boat launch ramp at Rat Ranch. 1005 Comment
  JEPS66439  Veronica anagallis-aquatica L. R. Heckard and P. Rubtzoff 1971-8-3 2701 Shasta just s of bridge over Pit River (at MacArthur) 1005 Comment
  CHSC112473  Veronica catenata Lowell Ahart; John Dittes 2013-6-9 18791 Shasta On the bottom of a deep irrigation ditch, Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS120908  Veronica catenata Lowell Ahart, John Dittes 2013-6-9 18791 Shasta Hollenbeck Field, 950 feet E of Rat Farm Boat Launch, 3.4 air miles N of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA0118766  Veronica catenata Lowell A. Ahart, John Dittes 2013-6-9 18791 Shasta Hollenbeck Field, 950 feet east of Rat Farm Boat Launch, 3.4 air miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC88309  Vicia americana var. americana R. Fischer; J. Marr 2004-5-23 193 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge Modoc Plateau. Located along Lava Springs Trail. On the western slope above the southern end of Big Lake. 1010 Comment
  CHSC88352  Vicia americana var. americana R. Fischer; J. Marr 2004-5-28 236 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on eastern edge of Modoc Plateau. Growing along Lava Springs Trail just east of Crystal Springs. 1008 Comment
  JEPS50269  Viola beckwithii Alma U. Ames 1918-3-28 Shasta near the town of McArthur Comment
  JEPS50270  Viola beckwithii Alma U. Ames 1918-3-28 Shasta near the town of McArthur Comment
  JEPS89163  Viola beckwithii Kate Jared Stirring 1919-4-1 Shasta McArthur Comment
  JEPS91080  Viola beckwithii Dean W. Taylor 1992-3-16 12330 Shasta Fall River Valley 0.5 mi n along PG&E gas pipeline from westernmost end of Brown Road, Modoc Plateau Fall River Valley; Modoc Plateau, Fall River Valley 1005 Comment
  CHSC2038  Viola sheltonii P. Delaplane 1965-4-3 34 Shasta Squaw Creek area of the Harry Horr Ranch. Ca. 5 mi. ne of Glenburn. 121 Comment
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  CHSC93015  Vulpia microstachys var. microstachys R. Fischer 2005-5-22 618 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. Collected along the road edges of the main park road between Horr Pond and Crystal Springs. 1008 Comment
  CHSC89705  Wyethia mollis R. Fischer; J. Marr 2004-5-22 377 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Collected along rd. between McArthur and Rat Farm. Mdw on edge of the old McArthur Swamp. 1013 Comment
  CHSC71690  Xanthium spinosum Vernon H. Oswald 1998-8-30 9557 Shasta Dirt road heading north of McArthur to the boat ramp on Big Lake. Roadside. 1005 Comment
  CHSC89720  Xanthium spinosum R. Fischer; J. Marr 2004-8-12 353 Shasta Ahjumawi Lava Springs State Park, 3 miles n. of McArthur, on western edge Modoc Plateau. Along rd. between McArthur and Rat Farm. Old McArthur Swamp. 1011 Comment
  CHSC93214  Yabea microcarpa R. Fischer 2005-7-15 610 Shasta Ahjumawi Lava Springs State Park, 3 miles N. of McArthur, on the western edge of the Modoc Plateau. In the road edges of the main park between Horr Pond and Crystal Springs. 1008 Comment



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