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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Poaceae (Gramineae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Perennial herb, 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.
Species In Genus: 10 species: western United States to Guatemala. Etymology: (Auguste de Saint-Hilaire, French biologist, 1779--1853)
eFlora Treatment Author: J. Travis Columbus
Jepson Online Interchange
Key to HilariaPrevious taxon: Heteropogon contortus
Next taxon: Hilaria jamesii
Citation for this treatment: J. Travis Columbus 2016. Hilaria, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=11080, accessed on May 31, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 31, 2016.