Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit 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.


Robert Webster

Annual, perennial herb
Stems decumbent to erect
Leaves basal and cauline; ligule membranous, ciliate or not; blade generally flat
Inflorescence umbel- to panicle-like; 1° branches ± spike-like, spreading to ascending; spikelets generally many per branch, 2–3 per node, short-stalked to subsessile, on one side of axis
Spikelet compressed, falling as 1 unit; glumes unequal, upper glume < or = spikelet, appressed-hairy, clearly 3–5-veined, veins minutely ridge-like; florets 2, lower floret sterile, lemma texture like upper glume, upper floret fertile, lemma ± thin, flexible, back facing away from inflorescence axis, margin flat, tip generally obtuse; palea ± = lemma
Species in genus: ± 200 species: warm temp, tropical, worldwide
Etymology: (Latin: finger, from inflorescence branch arrangement)
Reference: [Webster 1987 Sida 12:209–222]


D. sanguinalis (L.) Scop.

Stem 2–7 dm; nodes 2–5
Leaf: sheath 2.5–15 cm, hairy; ligule 1–3 mm; blade 3–17 cm, 2–14 mm wide, upper surface soft-hairy
Inflorescence: branches 3–9 cm; spikelets many, generally 2 per node, stalk ± 0.5 mm
Spikelet ± 2.5–3 mm, ± 1 mm wide, lanceolate to ovate, purple in fruit; lower glume < 0.5 mm, upper glume ± 1/2–3/4 spikelet length; lemma of lower floret 5–7-veined, acuminate to acute
Chromosomes: 2n=36
Ecology: Disturbed places, fields, roadsides
Elevation: < 500 m.
Bioregional distribution: North Coast, s Cascade Range Foothills, Sierra Nevada Foothills, Central Western California, South Coast, East of Sierra Nevada, Mojave Desert (Panamint Valley), expected elsewhere
Distribution outside California: Oregon, e US; native to Europe
Flowering time: Jun–Sep

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bioregional map for DIGITARIA%20sanguinalis being generated
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)
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 Digitaria sanguinalis
Retrieve dichotomous key for Digitaria
Overlay Consortium of California Herbaria specimen data by county on this map
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