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

  • 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.



J. Travis Columbus

Annual, perennial herb, generally cespitose
Stem solid, generally glabrous
Leaves generally basal; ligule generally < 1 mm, generally hairy; blade flat to inrolled, upper surface generally ± short-hairy, often ciliate near ligule, hairs long, bulbous-based
Inflorescence generally panicle-like; branches spike-like, 1 per node, persistent or deciduous in fruit; spikelets 2-rowed on 1 side of axis, overlapping
Spikelet sessile or short-stalked, ± cylindric to laterally compressed; glumes generally unequal, generally lanceolate, 1-veined, upper glume firmer than lower; axis (if inflorescence branch persistent) breaking between glumes and lower floret; florets generally 2–3, lower floret bisexual, > upper, upper florets generally vestigial, sterile; lemmas 3-veined, generally 3-awned, awns straight, scabrous; palea ± = lemma
Species in genus: ± 40 species: Am
Etymology: (Claudio (born 1774) and Esteban (born 1776) Boutelou, Spanish botanists, horticulturists)
Reference: [Gould 1979 Ann Missouri Bot Gard 66:348–416]
Many species important for forage.


B. eriopoda (Torr.) Torr.


Perennial, sometimes stoloned
Stem decumbent to erect, 1.5–6 dm; internodes, especially lower, hairy
Leaf: blade < 10(15) cm, < 2 mm wide
Inflorescence: branches 2–7, 10–40 mm, spreading to appressed, persistent in fruit; branch axis slightly exceeding terminal spikelet node, base densely hairy; spikelets 6–18 per branch, ascending to appressed, breaking apart between glumes and lower floret
Spikelet: upper glume 4–8 mm, generally glabrous, sharply acute; florets 2; lower floret lemma ± = to > upper glume, base hairy-tufted, glabrous or sparsely hairy above, lobes 0, central awn 1.5–4 mm, lateral awns < 2 mm; upper floret base hairy-tufted, lobes generally 0 between awn bases, awns 4–8 mm, ± equal
Chromosomes: 2n=20,21,28
Ecology: Dry, open, sandy to rocky slopes, flats, washes, scrub, woodland
Elevation: 900–1900 m.
Bioregional distribution: e Desert Mountains
Distribution outside California: to Wyoming, Oklahoma, n Mexico
Flowering time: Jun–Sep
See the CNPS Inventory for information about endangerment and rarity.
previous taxon | next taxon
bioregional map for BOUTELOUA%20eriopoda being generated

Retrieve Jepson Interchange Index to Plant Names entry for Bouteloua eriopoda
Retrieve dichotomous key for Bouteloua
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California