|University of California, Berkeley|
|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 trifida Thurb. ex S. Watson
Habit: Perennial herb, sometimes flowering 1st year, sometimes short-rhizomed. Stem: ascending to erect, 1--3 dm. Leaf: blade < 5 cm, < 1.5 mm wide. Inflorescence: branches 1--7, 10--35 mm, ascending to appressed, persistent in fruit; branch axis terminated by spikelet, base puberulent to hairy; spikelets 8--24 per branch, ascending, breaking between glumes and lower floret. Spikelet: upper glume 2.5--5 mm, glabrous, tip generally notched, awned from sinus < 1 mm; florets 2(3), lower floret lemma < upper glume, glabrous or hairy, tip tapered to central awn, awns 2--8 mm, +- equal; upper floret base glabrous, lobes 0 between awn bases, awns 2--8 mm, +- equal. Chromosomes: 2n=20,28.
Ecology: Dry, rocky, generally calcareous slopes, crevices, washes, scrub; Elevation: 200--1600 m. Bioregional Distribution: n&e DMoj (mostly DMtns); Distribution Outside California: to Utah, Texas, central Mexico. Flowering Time: Mar--Sep
eFlora Treatment Author: J. Travis Columbus
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Bouteloua gracilis
Next taxon: Brachypodium
Citation for this treatment: J. Travis Columbus 2017. Bouteloua trifida, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=15994, accessed on February 24, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 24, 2017.