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|Jepson eFlora: Taxon page
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|Family: Poaceae (Gramineae)||View Description||Dichotomous Key|
|Genus: Bouteloua||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Bouteloua gracilis (Kunth) Lag. ex Griffiths
Habit: Perennial herb, generally short-rhizomed. Stem: ascending to erect, 1--6 dm. Leaf: blade < 15 cm, < 2 mm wide. Inflorescence: branches 1--3, 10--50 mm, spreading to appressed, persistent in fruit; branch axis terminated by vestigial spikelet, base hairy; spikelets 20--80 per branch, spreading to ascending, breaking apart between glumes and lower floret. Spikelet: upper glume 3.5--6 mm, generally with long, bulbous-based hairs on vein, acute or awned < 0.5 mm; florets 2--3; lower floret lemma +- = upper glume, base hairy-tufted, back hairy, tip 2-lobed, awns 1--3 mm, unequal, central awn from sinus; base of middle or, if only 2 florets, upper floret hairy-tufted, lobed between awn bases, awns 2.5--6 mm, +- equal; uppermost floret (if present) < 2 mm, awn 0. Chromosomes: 2n=20,21,28,35,40,42,60,61,77,84.
Ecology: Sandy to rocky slopes, flats, drainages, scrub, woodland, pine forest; Elevation: < 2700 m. Bioregional Distribution: SnBr, e DMtns (Mid Hills, Clark Mtn Range, Ivanpah, New York mtns), waif elsewhere; Distribution Outside California: to southern Canada, eastern United States, southern Mexico, Argentina. Flowering Time: May--Oct
eFlora Treatment Author: J. Travis Columbus
Jepson Online Interchange
Previous taxon: Bouteloua eriopoda
Next taxon: Bouteloua trifida
Citation for this treatment: J. Travis Columbus 2016. Bouteloua gracilis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=15978, accessed on May 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 29, 2016.