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Deschampsia cespitosa subsp. cespitosa

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: DeschampsiaView DescriptionDichotomous Key

Common Name: HAIR GRASS
Habit: Annual, perennial herb. Stem: erect, 1 to densely clumped. Leaf: generally basal, tufted; ligule narrow, decurrent to sheath, glabrous to minutely hairy; blade flat to inrolled. Inflorescence: panicle- to spike-like, open to narrow. Spikelet: glumes, lemmas shiny; glumes +- equal, > lower floret; axis prolonged >= 0.75 mm beyond upper floret, conspicuously bristly (sometimes with vestigial floret at tip); florets 1--3, bisexual, breaking above glumes and between florets; callus soft-hairy; lemma rounded, 2--4-toothed at truncate tip, faintly 3--7-veined, awned at or below middle, awn straight to bent; palea +- = lemma.
Species In Genus: 30--40 species: temperate America, Eurasia, New Zealand, Antarctica. Etymology: (Louis Auguste Deschamps, French naturalist, 1765--1842) Note: Deschampsia atropurpurea is now treated as Vahlodea atropurpurea.
eFlora Treatment Author: Robert E. Preston & Dieter H. Wilken
Species: Deschampsia cespitosaView Description 

Common Name: TUFTED HAIR GRASS
Habit: Perennial herb, densely to loosely clumped. Stem: 2--10 dm. Leaf: glabrous to scabrous; ligule 3--8 mm, acute to obtuse, entire to toothed at tip; blade generally 8--20 cm, 1--4 mm wide, flat to inrolled. Inflorescence: narrow to open; lower branches erect to drooping. Spikelet: glumes, lemma tips +- purple; glumes +- equal, lanceolate, acute, lower 1-veined, upper 3-veined; florets generally 2; callus hairs generally < 1/3 lemma; lemma generally 4-toothed at tip, faintly 5-veined, awned at or below middle, awn straight to slightly bent. Chromosomes: 2n=26--28.
Note: Subspecies intergrade, need study.

Deschampsia cespitosa (L.) P. Beauv. subsp. cespitosa
NATIVE
Habit: Densely clumped, not glaucous. Inflorescence: open (compact in some high elevation plants); lower branches spreading to drooping. Spikelet: 1 to clustered on exposed branchlets; glumes 2--6 mm; lemma 2--4 mm, awn 1--8 mm, generally attached near base of lemma, generally not exceeding glumes (exceeding glumes in some high elevation plants).
Ecology: Meadows, streambanks, coastal marshes, forest, alpine; Elevation: < 3820 m. Bioregional Distribution: NW, CaR, SN, CCo, SnFrB, TR, Wrn, n SNE, W&I; Distribution Outside California: Alaska, Canada, eastern United States; Eurasia. Flowering Time: Jul--Aug
eFlora Treatment Author: Robert E. Preston & Dieter H. Wilken
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Citation for this treatment: Robert E. Preston & Dieter H. Wilken 2016. Deschampsia cespitosa subsp. cespitosa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=50130, accessed on May 03, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 03, 2016.


Deschampsia cespitosa subsp. cespitosa
click for enlargement
© 2008 Keir Morse
Deschampsia cespitosa subsp. cespitosa
click for enlargement
© 2008 Keir Morse
Deschampsia cespitosa subsp. cespitosa
click for enlargement
© 2008 Keir Morse

More photos of Deschampsia cespitosa subsp. cespitosa in CalPhotos


Geographic subdivisions for Deschampsia cespitosa subsp. cespitosa:
NW, CaR, SN, CCo, SnFrB, TR, Wrn, n SNE, W&I;
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.