|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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)
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.
Stem erect, unbranched
Leaf: ligule membranous, generally truncate; blade flat to inrolled, often tapered
Spikelet: glumes ± equal, obtuse to acute, veins evident; axis breaking above glumes; floret 1, generally ± compressed; callus blunt; lemma margins widely separated with age, awn generally readily deciduous; palea ± = lemma, texture like lemma
Species in genus: 30 species: arid temp, subtropical Eurasia, Africa
Etymology: (Greek: falling awn)
Segregated from Oryzopsis.
See the CNPS Inventory for information about endangerment and rarity.
Stem 36.5 dm
Leaf: basal ligule 0.41.5 mm
Inflorescence 813 cm; lowest branches becoming reflexed
Spikelet: glumes 2.53.5 mm; floret 1.52.5 mm; lemma generally glabrous, sometimes sparsely but evenly short-hairy, awn 48 mm, weakly bent
Ecology: Gravel benches, rocky slopes, creek banks
Elevation: 7002950 m.
Bioregional distribution: White and Inyo Mountains, Desert Mountains
Distribution outside California: to British Columbia, Rocky Mtns
Flowering time: JunSep
Synonyms: Oryzopsis m. (Trin. & Rupr.) Thurb