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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

HOLCUS VELVET GRASS

Dieter H. Wilken


(Annual) perennial herb, generally cespitose or from rhizomes; glabrous to velvety soft-hairy. Leaf: generally basal; ligule membranous, truncate, puberulent; blade flat. Inflorescence: panicle-like, ± congested to open. Spikelet: laterally compressed, breaking below glumes, falling as 1 unit; glumes ± equal, lower 1-veined, upper 3-veined; florets generally 2(3), lower floret bisexual, upper staminate or sterile; callus hairy; lemma ± 2 mm, shiny, membranous, faintly 3–5-veined, lemma of lower floret awnless, lemma of upper floret awned near 2-lobed tip; palea ± = lemma.
± 8 species: temperate Eurasia, Africa. (Latin: a grass) [Standley 2007 FNANM 24:739–741]
Unabridged references: [Beddows 1971 Bot J Linn Soc 64:183–198]

Key to Holcus

1. Stems tufted, internodes soft-hairy; lemma awn 1–2 mm, twisted to recurved ..... H. lanatus

1' Stems 1–few, from rhizomes, internode generally glabrous; lemma awn 3–5 mm, bent to straight ..... H. mollis

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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