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Calamagrostis breweri
SHORT HAIR REED GRASS

Higher Taxonomy
Family: Poaceae (Gramineae)View DescriptionDichotomous Key

Common Name: GRASS FAMILY
Habit: Annual to woody perennial herb; roots generally fibrous. Stem: generally round, hollow; nodes swollen, solid. Leaf: alternate, 2-ranked, generally linear, parallel-veined; sheath generally open; ligule membranous or hairy, at blade base. Inflorescence: various (of generally many spikelets). Spikelet: glumes generally 2; florets (lemma, palea, flower) 1--many; lemma generally membranous, sometimes glume-like; palea generally +- transparent, +- enclosed by lemma. Flower: generally bisexual, minute; perianth vestigial; stamens generally 3; stigmas generally 2, generally plumose. Fruit: grain, sometimes achene- or utricle-like.
Genera In Family: 650--900 genera; +- 10550 species: worldwide; greatest economic importance of any family (wheat, rice, maize, millet, sorghum, sugar cane, forage crops, ornamental, weeds; thatching, weaving, building materials). Note: Generally wind-pollinated. Achnatherum, Ampelodesmos, Hesperostipa, Nassella, Piptatherum, Piptochaetium, Ptilagrostis moved to Stipa; Elytrigia, Leymus, Pascopyrum, Pseudoroegneria, Taeniatherum to Elymus; Hierochloe to Anthoxanthum; Lolium, Vulpia to Festuca; Lycurus to Muhlenbergia; Monanthochloe to Distichlis; Pleuraphis to Hilaria; Rhynchelytrum to Melinis. The following taxa (in genera not included here), recorded in California from historical collections or reported in literature, are extirpated, lacking vouchers, or not considered naturalized: Acrachne racemosa (Roth) Ohwi, Allolepis texana (Vasey) Soderstr. & H.F. Decker, Amphibromus nervosus (Hook. f.) Baill., Axonopus affinis Chase, Axonopus fissifolius (Raddi) Kuhlm., Coix lacryma-jobi L., Cutandia memphitica (Spreng.) K. Richt., Dinebra retroflexa (Vahl) Panz., Eremochloa ciliaris (L.) Merr., Eustachys distichophylla (Lag.) Nees, Gaudinia fragilis (L.) P. Beauv., Miscanthus sinensis Andersson, Neyraudia arundinacea (L.) Henrard, Phyllostachys aurea Rivière & C. Rivière, Phyllostachys bambusoides Siebold & Zuccarini, Rottboellia cochinchinensis (Lour.) Clayton, Schedonnardus paniculatus (Nutt.) Branner & Coville, Schizachyrium cirratum (Hack.) Wooton & Standl., Schizachyrium scoparium (Michx.) Nash, Themeda quadrivalvis (L.) Kuntze, Thysanolaena latifolia (Hornem.) Honda, Tribolium obliterum (Hemsl.) Renvoize, Zea mays L., Zizania palustris L. var. interior (Fassett) Dore, Zoysia japonica Steud. Paspalum pubiflorum E. Fourn., Paspalum quadrifarium Lam., are now reported for southern California (J Bot Res Inst Texas 4:761--770). See Glossary p. 30 for illustrations of general family characteristics.
eFlora Treatment Author: James P. Smith, Jr., except as noted
Scientific Editor: James P. Smith, Jr., J. Travis Columbus, Dieter H. Wilken.
Genus: CalamagrostisView DescriptionDichotomous Key

Common Name: REED GRASS
Habit: Perennial herb, generally from rhizomes. Stem: 1--15 dm, generally not branched, +- smooth; nodes (1)2--8. Leaf: generally basal and cauline; sheath smooth or scabrous; ligule membranous; blade flat to inrolled. Inflorescence: panicle-like, open to dense; branches +- drooping to appressed; spikelets ascending to appressed. Spikelet: glumes subequal, generally lanceolate, acute to acuminate, lower generally 1-veined, upper 3-veined; floret 1, breaking above glumes; axis prolonged beyond floret, hairy; callus hairy; lemma < glumes, awned from below middle to near base, tip generally 4-toothed, veins 3--5, awn straight to twisted, bent; palea +- = lemma, thin.
Species In Genus: +- 265 species (including Deyeuxia): cool temperate (especially moist montane); some forage value. Etymology: (Greek: reed grass) Note: Hybridization, polyploidy (diploids unknown), and asexual seed set contribute to taxonomic difficulty.
eFlora Treatment Author: Paul M. Peterson, Jeffery M. Saarela & Craig W. Greene

Calamagrostis breweri Thurb.
NATIVE
Habit: Cespitose; rhizomes 0. Stem: 2--5.4 dm; nodes 1--3. Leaf: generally basal; ligule 1.7--4.1(6) mm; blade 0.4--1.7 mm wide, flat or inrolled, 7--11-veined, tip prow-shaped. Inflorescence: (4)5.7--8.5 cm, open; lower branches 0.4--3(3.5) cm, +- spreading. Spikelet: glumes 3.1--5 mm, smooth or keel scabrous; axis 1--2 mm, hairs 1--2 mm; callus hairs 0.3--1.2 mm, sparse; lemma 3.4--5.5 mm, awned near base; awn 3.5--5.5 mm, exserted generally (0.5)1--3 mm beyond the glume tips, twisted, bent. Chromosomes: 2n=42.
Ecology: Moist woodland, meadows, lake margins, streambanks; Elevation: 1700--2600 m. Bioregional Distribution: KR, n SNH; Distribution Outside California: Oregon. Flowering Time: Jul--Sep
eFlora Treatment Author: Paul M. Peterson, Jeffery M. Saarela & Craig W. Greene
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Citation for this treatment: Paul M. Peterson, Jeffery M. Saarela & Craig W. Greene 2016. Calamagrostis breweri, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16535, accessed on May 04, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 04, 2016.


Calamagrostis breweri
click for enlargement
© 2006 Steve Matson
Calamagrostis breweri
click for enlargement
© 2006 Steve Matson
Calamagrostis breweri
click for enlargement
© 2006 Steve Matson
Calamagrostis breweri
click for enlargement
© 2005 Steve Matson
Calamagrostis breweri
click for enlargement
© 2005 Steve Matson
Calamagrostis breweri
click for enlargement
© 2005 Steve Matson

More photos of Calamagrostis breweri in CalPhotos


Geographic subdivisions for Calamagrostis breweri:
KR, n SNH;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.