Jepson Flora Project: Jepson Interchange    

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

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



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.



Dieter H. Wilken

Species in genus: 1 sp
Etymology: (Greek: finger, from crowded spikelets at inflorescence tips)
Reference: [Stebbins & Zohary 1959 Univ Calif Publ Bot 31:1–40]


D. glomerata L.

Perennial from short rhizomes
Stems (1)2–5, 3–11 dm
Leaves basal and cauline; sheath closed, keeled; appendages 0; ligules 4–9 mm, ± translucent, fringed to toothed at obtuse tip, glabrous to minutely soft-hairy; blades 3–6 mm wide, slightly scabrous
Inflorescence 1–1.5 dm, panicle-like; branches spike-like, stiffly erect to spreading
Spikelets crowded, generally on 1 side of branch tips, short-stalked to subsessile, laterally compressed; florets 2–4, generally bisexual (upper sometimes staminate), breaking above glumes and between florets; glumes and lemmas short-awned at tip, minutely ciliate to short-hairy on back; glumes 3–6 mm, subequal; lemmas 4–7 mm, margin translucent, 5-veined; palea slightly < lemma, 2-forked at tip
Chromosomes: 2n=14,21,27–31,42
Ecology: Disturbed, often moist sites
Elevation: < 2500 m.
Bioregional distribution: California Floristic Province, Great Basin Floristic Province
Distribution outside California: to Canada, US; native to Eurasia
Flowering time: May–Aug
Cult for forage, hay.

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