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|Family: Poaceae (Gramineae)||View Description||Dichotomous Key|
|Genus: Sporobolus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Sporobolus vaginiflorus (Torr. ex A. Gray) Alph. Wood
Habit: Annual. Stem: 1--several, tufted, erect or decumbent, 2--8 dm. Leaf: base dull, purple to straw-colored, margin glabrous or ciliate, collar glabrous or with hairs to 2 mm; ligule < 0.3 mm, fringe hairs to 1 mm; blade 2--15 cm, 0.5--2 mm wide. Inflorescence: generally terminal and axillary, exserted to mostly sheathed, contracted, dense; 1° branches appressed, lowest generally < 3 cm, > internodes, 2° appressed, bearing 3°, spikelets to near base. Spikelet: 3--6 mm, green or lead-colored; glumes lanceolate, tip acute, entire, unequal, lower 2.5--4.7 mm, upper 2.5--5, > 0.6 × lemma; lemma 3--5.5 mm, strigose, lanceolate, hairs < 0.5 mm, tip acute to beaked; anthers 1.2--3.2 mm. Fruit: 1.8--2.7 mm, obovoid, striate, light-brown. Chromosomes: 2n=54.
Ecology: Open, generally sandy, disturbed areas; Elevation: < 600 m. Bioregional Distribution: e KR (nw Shasta Co.), n SNH (Grass Valley, Truckee Canyon); Distribution Outside California: native to southeastern Canada, central and eastern United States, northeastern Mexico; naturalized in Idaho, Arizona. Flowering Time: Apr--Nov Note: Possibly only a waif in California.
Unabridged Note: Plants with spikelets 1.6--3 mm, lemma glabrous, palea acute and subequal to lemma are Sporobolus neglectus Nash, an eastern North America annual with sporadic occurrence in western North America and possibly present in California.
eFlora Treatment Author: Michael Curto
Jepson Online Interchange
Previous taxon: Sporobolus indicus
Next taxon: Sporobolus wrightii
Citation for this treatment: Michael Curto 2017. Sporobolus vaginiflorus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=45331, accessed on January 19, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 19, 2017.