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Key to families | Table of families and genera
This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press.
Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. 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.
Perennial, cespitose, rhizomed.
Stem: ascending to erect, solid; nodes generally hairy.
Leaf: ligule membranous, ciliate-fringed; blade firm, flat to inrolled, sharply acute.
Inflorescence: spike-like, generally cylindric; spikelets in clusters, 3 per node, ± equal; clusters wedge-shaped, overlapping, ascending to appressed, hairy-tufted at base, falling as 1 unit from zigzag axis; glumes of cluster together involucre-like.
Central spikelet: subsessile, appressed to or nearest inflorescence axis; glumes equal, < floret(s), oblanceolate, keeled, ciliate, tip deeply 2-lobed, lobes lanceolate, awns 3–9, 1 from ± mid- keel, others terminal; florets generally 1–2, lower floret bisexual, upper floret (if present) bisexual or staminate; lemma lanceolate, 3-veined, generally ciliate, tip generally 2-lobed, generally 1-awned ± from sinus; palea ± = lemma.
Lateral spikelet: sessile; glumes < to ± = florets, ciliate, lower glume asymmetric with 1 awn from ± middle near margin, generally 2-lobed, lobes unequal; florets 1–4, generally staminate; lemma 3-veined, tip generally ciliate; palea ± = lemma.
10 species: w US to Guatemala. (Auguste de Saint-Hilaire, French biologist, 1779–1853)
Unabridged references: [Reeder & Reeder 1988 Madroño 35:6–9]
1. St internodes glabrous to puberulent ..... H. jamesii
1' St internodes sparsely to densely tomentose ..... H. rigida
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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