Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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POACEAE

GRASS FAMILY

James P. Smith, Jr., except as specified

Annual to bamboo-like; roots generally fibrous
Stem generally round, hollow; nodes swollen, solid
Leaves alternate, 2-ranked, generally linear; 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; stamens generally 3; stigmas generally 2, generally plumose
Fruit: achene-like grain
Genera in family: 650–900 genera; ± 10,000 species: worldwide; greatest economic importance of any family (wheat, rice, maize, millet, sorghum, sugar cane, forage crops, ornamental, weeds; thatching, weaving, building materials)
Reference: [Hitchcock 1951 Manual grasses US, USDA Misc Publ 200; Clayton & Renvoise 1986 Kew Bull Add Series 13]
See Glossary p. 26 for illustrations of general family characteristics. Generally wind-pollinated.

CRYPSIS

PRICKLE GRASS

Annual
Stems prostrate, ascending, or erect
Leaf: ligule hairy; blade generally short, linear to narrowly lanceolate
Inflorescence panicle-like, dense, cylindric and exserted or head-like and enclosed by enlarged sheaths
Spikelet bisexual, strongly compressed, falling as 1 unit; glumes, lemma acute or short-pointed; glumes < or = floret, generally lanceolate, keeled, strongly 1-veined; floret 1; lemma membranous, 1-veined; palea generally 2-veined, generally splitting with age; stamens generally 3
Species in genus: 8 species: Medit Eur, Asia, c Africa
Etymology: (Greek: concealment, from partly hidden inflorescence)
Reference: [Hammel & Reeder 1979 Syst Bot 4:267–280]

Introduced

C. alopecuroides (Piller & Mitterp.) Schrad.

Plant generally purple to black
Stems ascending, 5–75 cm; branches few
Leaf: blade 5–12 cm, green or ± glaucous; sheath glabrous
Inflorescence 1.5–6.5 cm, 4–6 mm wide, cylindric
Spikelet 2–3 mm; glume keel hairy, lower glume < upper; lemma generally > glumes; palea 2-veined
Chromosomes: 2n=16
Ecology: Bottomlands, reservoir and river margins
Elevation: < 800 m.
Bioregional distribution: Klamath Ranges, Inner North Coast Ranges, High Cascade Range, Central Coast (Marin Co.), East of Sierra Nevada
Distribution outside California: to Washington, eastern US; native to Europe

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bioregional map for CRYPSIS%20alopecuroides being generated
 
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Crypsis alopecuroides
Retrieve dichotomous key for Crypsis
Overlay Consortium of California Herbaria specimen data by county on this map
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