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|Jepson eFlora: Taxon page
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|Family: Poaceae (Gramineae)||View Description||Dichotomous Key|
|Genus: Sporobolus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Sporobolus contractus Hitchc.
Habit: Perennial herb. Stem: tufted, erect, 4--12 dm. Leaf: base dull, green to brown, margin ciliate, collar with conspicuous hairs to 4 mm; ligule < 0.5--1 mm, fringe hairs to 4 mm; blade 5--35 cm, 3--8 mm wide. Inflorescence: generally terminal, exserted or sheathed basally, spike-like, dense; branches, spikelets to near base; 1° branches appressed, lowest generally < 2 cm, > internodes, 2° appressed, bearing 3°. Spikelet: 1.7--3 mm, green to lead-colored; glumes narrowly lanceolate, tip acute, unequal, lower 0.7--1.7 mm, upper 2--3 mm, > 0.6 × lemma; lemma 2--3 mm, glabrous, lanceolate, tip acute; anthers 0.2--0.5 mm. Fruit: 0.8--1.2 mm, ellipsoid, striate, light-brown. Chromosomes: 2n=36.
Ecology: Rocky to sandy washes, slopes, scrub, woodland; Elevation: 400--2300 m. Bioregional Distribution: W&I, D; Distribution Outside California: to Utah, Colorado, Texas, northern Mexico. Flowering Time: Aug--Oct Note: Sporobolus cryptandrus plants with contracted, sheathed panicles are often misidentified as Sporobolus contractus. Note length difference in lowest 1° inflorescence branches.
Synonyms: Sporobolus cryptandrus var. strictus Scribn.
eFlora Treatment Author: Michael Curto
Jepson Online Interchange
Previous taxon: Sporobolus airoides
Next taxon: Sporobolus cryptandrus
Citation for this treatment: Michael Curto 2016. Sporobolus contractus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=45297, accessed on August 27, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 27, 2016.