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.

BLEPHARIDACHNE

EYELASH GRASS

Annual, perennial herb
Leaves short, tufted
Inflorescence panicle-like, dense, short, barely elevated above leaves
Spikelet bisexual; glumes > florets, thin, 1-veined; axis breaking apart above glumes, falling as 1 unit; florets 4, lower 2 sterile or staminate, 3rd bisexual, uppermost sterile, ± vestigial; lemma ciliate, back rounded, 3-veined, deeply 2-lobed to middle, lobes short-awned, tip awned between lobes, awn = lobes; palea ciliate or glabrous
Species in genus: 4 species: sw North America, Argentina
Etymology: (Greek: eyelash + chaff, from ciliate lemma)

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bioregional map for BLEPHARIDACHNE being generated
 
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