This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants.
|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press
|The second edition of The Jepson Manual (2012) is available from the University of California Press|
|See also the Jepson eFlora, which parallels the Second Edition|
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) 1many; 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: 650900 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).
[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.
Stems prostrate to erect, solitary to clumped
Leaves basal and cauline; sheath open; appendages 0; ligule membranous, toothed at tip; blade flat to inrolled
Inflorescence raceme- or panicle-like
Spikelets subsessile to short-stalked; florets 525, bisexual, breaking above glumes and between florets; glumes equal to subequal, lower lanceolate, 13-veined, upper ± elliptic, 3-veined; lemma firmly membranous, acute to obtuse, 15-veined; palea < lemma
Species in genus: 3 species: Eur
Etymology: (J.B. Desmazieres, French botanist)
Reference: [see discussion in Clapham, Tutin, & Warburg 1952 Fl Brit Isles 1434]
Stem generally erect, 13 dm, glabrous
Leaf: blade 225 cm, 13 mm wide, flat, glabrous
Inflorescence panicle-like, ovoid, 48 cm; branches and pedicels rigid, 3-angled; branches widely spreading
Spikelets 57 mm, 25 on lower branches, lowest in axil; florets 512; glumes and lemmas glabrous; glumes 12.5 mm; lemmas spreading, 23 mm, translucent at acute to abruptly soft-pointed tip
Ecology: Open, often sandy sites
Elevation: < 700 m.
Bioregional distribution: s North Coast, Central Coast, San Francisco Bay Area, South Coast, s Channel Islands (Santa Catalina Island)
Distribution outside California: to America; native to s&w Europe
Synonyms: Scleropoa r. (L.) Griseb
|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).|