Bouteloua repens

(Kunth) Scribn. & Merr.
Common names: Slender grama
Synonyms: Bouteloua filiformis
Treatment appears in FNA Volume 25. Treatment on page 259.

Plants perennial; cespitose, usually not dense, hard, or knotty, without rhizomes or stolons. Culms 15-65 cm, erect, geniculate, or decumbent, sometimes rooting at the lower nodes, usually branching from the aerial nodes. Sheaths glabrous or pubescent; ligules 0.2-0.3 mm, membranous, ciliate; blades 5-20 cm long, 1-5 mm wide, bases with papillose-based hairs on the margins, both surfaces glabrous or pubescent. Panicles 4-14 cm, with (3) 7-12 branches; branches 10-20 mm, with 2-8 spikelets, extending 4-6 mm beyond the base of the terminal spikelets, apices entire; disarticulation at the base of the branches. Spikelets appressed, all alike, with 1 bisexual and 1 staminate (rarely rudimentary) floret. Glumes glabrous, veins scabrous or strigose; lower glumes 4-7 mm; upper glumes 4-9 mm, mostly glabrous, sometimes scabrous or strigose over the veins, apices acute, unawned or awn-tipped, awns about 1 mm; lowest lemmas 4.5-8 mm, usually glabrous, rarely pubescent basally, 3-awned, awns wide basally, central awns slightly longer than the lateral awns, often flanked by 2 membranous 0.5-1.5 mm lobes; lowest paleas 6-8 mm, bilobed, often shortly 2-awned; anthers 3-5.5 mm, usually orange or yellow, occasionally red or purple; second lemmas 5.5-7 mm, glabrous, 3-awned, central awns 4-10 mm, often flanked by membranous lobes, lateral awns 2-10 mm; second paleas 4-7 mm; anthers smaller than those of the lowest florets; rachillas prolonged beyond the second florets as a short bristle. Caryopses 3-4 mm. 2n = 20, 40, 60.

Distribution

Maine, Puerto Rico, Mass., N.Mex., Tex., Ariz.

Discussion

Bouteloua repens grows in open, usually hilly terrain on many soil types, from sandy ocean shores to montane slopes, reaching elevations of 2500 m. Its native range extends from the southwestern United States through the Caribbean islands, Mexico, and Central America to Colombia and Venezuela.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bouteloua repens"
60 +, 40 +  and 20 +
purple +, red +, yellow +  and orange +
1 +  and 3 +
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
J.K. Wipff +
(Kunth) Scribn. & Merr. +
1 (?) +  and 3 (?) +
well-developed +
1 cm10 mm <br />0.01 m <br /> (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
pubescent +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
1mm;5mm +
subdigitate +  and digitate +
75 cm750 mm <br />0.75 m <br /> (?) +
spikelike +
not woody +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
triangular +  and dome--shaped +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
sometimes longer +
membranous +
Slender grama +
branching +  and rooting +
geniculate +
15 cm150 mm <br />0.15 m <br /> (65 cm650 mm <br />0.65 m <br />) +
not woody +
Maine +, Puerto Rico +, Mass. +, N.Mex. +, Tex. +  and Ariz. +
not waisted +
capillary +
4-lobed +  and trilobed +
sometimes longer +
round +  and compressed +
reduced +
shorter or longer +
subtending +
both +  and 1 +
acuminate +  and acute +
subequal +  and unequal +
papillose-based +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not absent +
5-veined +, 7-13-veined +  and 1-3-veined +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
sometimes longer +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
membranous +
membranous +
inconspicuous +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
pubescent +  and glabrous +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
2-awned +  and bilobed +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
concealed +  and prominent +
2 +  and 1 +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
4 cm40 mm <br />0.04 m <br /> (14 cm140 mm <br />0.14 m <br />) +
dry +  and fleshy +
spikelike +
elongate +
flabellate +
pubescent +  and glabrous +
sessile +  and subsessile +
terete +, compressed +  and pectinate +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
pubescent +  and glabrous +
Bouteloua filiformis +
Bouteloua repens +
Bouteloua subg. Bouteloua +
species +
membranous +
strigose +, scabrous +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
strigose +  and scabrous +
7 +  and 13 +
extended +
rhizomatous +  and stoloniferous +
plant +  and cespitose +
aquatic +  and terrestrial +