Jepson Flora Project: Jepson Interchange for California Floristics    
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Pyrus communis L.
ROSACEAE
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Information from the Index of California Plant Names (ICPN)
Initial Editorial Analysis 9 Feb 2010
Source of Report for California  
a Munz, P.A. 1974. A Flora of Southern California. Univ. of California Press, Berkeley, as cited in Kartesz & Meacham
b Rosatti SMASCH notes: Genus, species not treated in The Jepson Manual [Ed. 1]; probably or evidently persistent beyond cultivation.
c Hrusa et al., ms later published in Madrono 49(2)61-98. 2002: DISTRIBUTION: SnFrB, SCo, ScV, SNE.; STATUS: uncertain.; NOTES: Difficult to determine extent of true naturalization vs. old trees planted and persistent; "...grazed grassland near streamlet...possibly only persisting from cultivation...persisting apparently several decades after introduction...Oak woodland canyon with riparian woods along stream...apparently adventive about old homestead...edge of a thicket...offspring of old ranch planting in creek bottom..."
d Hrusa et al., Madrono 49(2)61-98. 2002: DIST: SCo, ScV, SNE, SnFrB: Hrusa et al. Current Status: Naturalized outside of wildlands: DOC: Contra Costa Co.: EBMUD land east of Tilden Park, ca. 1/2 mile southeast of Inspiration Point, grazed grassland near streamlet, single well browsed large shrub. Possibly only persisting from cultivation. May 7, 1993, B. Ertter and C. Thayer 11700 (UC); Mono Co.: Spring 0.7 mile S of the mouth of Milner Creek, 0.6 mile N 08? W of Copper Queen Mine, T04S, R33E, Sec. 21, MD. El. 5210ft Persisting apparently several decades after introduction, compact trees ca. 4m high in silty moist alluvial soil with Chrysothamnus, Stanleya, Robinia. May 29, 1986, James D. Morefield and Douglas H. McCarty 3718 (RSA, UC); Orange Co.: Santa Ana Mountains, 4mi NE Lake Irvine, Black Star Canyon, Cleveland National Forest, Trabuco District. Oak woodland canyon with riparian woods along the stream. Grassy clearings and chaparral on the canyon slopes. April 18, 1966, E.W. Lathrop 6176 (RSA); Southern Santa Ana Mountains, San Mateo Canyon Wilderness Area. Western edge of the wilderness in Lucas Canyon along canyon floor from crossing of Lucas Canyon Trail, upstream 1/4 mile to spur trail leading to old mining habitations in side canyon, T07S, R06W, Sec. 10, SB. El. 1000-1350ft. Low shrub, single individual, apparently adventive about old homestead. May 20, 1992, S. Boyd and T. Ross 7468 (RSA); Santa Barbara Co.: Smith, C.F. (1976, pg. 164); Santa Clara Co.: Coyote Creek. Mar. 30, 1901, H.P. Chandler 911 (UC); Sonoma Co.: Pitkin Marsh, near Forestville, eastern branch of the Upper Marsh. At the edge of a thicket, on damp ground. Oct. 26, 1952, P. Rubtzoff 1332 (CAS, RSA); W branch upper marsh. Oct. 26, 1952, Rubtzoff 1329 (UC); Ventura Co.: Matilija Canyon, offspring of old ranch planting in creek bottom. Oct. 6, 1946, H.M. Pollard s.n. (RSA, SBBG); Munz, P.A. (1974, pg. 758): NOTES: Sacramento Co.: observed as a possible escapes adjacent to orchards approx. one mile S of Freeport.
Initial Editorial Comments three records in SMASCH, collected 1952-1993, Contra Costa, Sonoma, Mono Cos., by collectors including Rubtzoff, Ertter, Morefield; "Occasional escape from cult., as near Ventura; native of Old World" on p. 758, Munz Southern California Flora; according to Source d, in California naturalized outside of wildlands, yet conditions of cited occurrences includes ones that evidently would qualify for inclusion in the flora according to criteria employed by Jepson Flora Project (24 Feb 2003)
Correspondence and Comments Subsequent to Initial Analysis
Correspondence 1 $ 8 Feb 2002, from Margriet Wetherwax see Comment 1
Editorial Comments 1 Correspondence 1 confirms Current Status as unresolved, in that issue of naturalization still to be addressed.
Correspondence 2 Treatment and author notes submitted for The Jepson Manual [Ed. 2] by Michael A. Vincent see Comment 2
Editorial Comments 2 Correspondence 2 indicates that for The Jepson Manual [Ed. 2] Pyrus communis L. is to be treated as naturalized in CA.
Editorial Summary and Current Status
Editorial Summary addition, naturalized in CA
Current Status JFP-2, accepted name for taxon naturalized in CA
Current Status Authority The Jepson Manual [Ed. 2]
Current Status Date 9 Feb 2010
List of names for this Current Status category
List of ICPN names in Pyrus
List of names from ICPN, Hrusa's Crosswalk, and Jepson Flora in Pyrus

Resources of the Jepson Flora Project: External links:
·Distribution maps: County distribution based on CCH specimens
Manual imageJepson eFlora
link image ·Consortium of California Herbaria specimen records (includes links to BerkeleyMapper)
· Jepson eFlora page with bioregion map and CCH specimen records
Manual imageArchived Indexes from The Jepson Manual (1993; TJM1)
link image Jepson's "A Flora of California" (genus)
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