Bouteloua aristidoides var. aristidoides

Common names: Needle grama
Treatment appears in FNA Volume 25. Treatment on page 255.

Panicle branches 5-16 mm to the base of the terminal spikelets and extending an additional 6-10 mm, with 2-5 spikelets.

Distribution

N.Mex., Tex., Utah, Calif., Md., Ariz., Nev.

Discussion

Bouteloua aristidoides var. aristidoides grows in dry mesas, plains, and washes from near sea level to about 2000 m. It matures rapidly following summer rains, and can be abundant over large areas within its range, which extends from California to western Texas and Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

yellow and red +  and yellow +
1 +  and 3 +
2.5 cm25 mm <br />0.025 m <br /> (?) +
J.K. Wipff +
(Kunth) Griseb. +
1 (?) +  and 3 (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
well-developed +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
pubescent +  and glabrous +
folded +  and flat +
0.7mm;2mm +
subdigitate +  and digitate +
75 cm750 mm <br />0.75 m <br /> (?) +
spikelike +
not woody +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Needle grama +
ascending +  and erect +
4 cm40 mm <br />0.04 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
N.Mex. +, Tex. +, Utah +, Calif. +, Md. +, Ariz. +  and Nev. +
not waisted +
capillary +
pistillate +  and staminate +
4-lobed +  and trilobed +
sometimes longer +
rudimentary +
round +  and compressed +
reduced +
shorter or longer +
subtending +
both +  and 1 +
acuminate +  and acute +
unequal +
papillose-based +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
not absent +
5-veined +, 7-13-veined +  and 1-3-veined +
acuminate +
0.58 cm5.8 mm <br />0.0058 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
sometimes longer +
ciliate +  and lacerate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
inconspicuous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
extended +
concealed +  and prominent +
2 +  and 1 +
0.5 cm5 mm <br />0.005 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (10.5 cm105 mm <br />0.105 m <br />) +
dry +  and fleshy +
spikelike +
elongate +
flabellate +
sessile +  and subsessile +
2 +  and 10 +
terete +, compressed +  and pectinate +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Bouteloua aristidoides var. aristidoides +
Bouteloua aristidoides +
variety +
setaceous +  and sharp +
membranous +
pubescent +  and glabrous +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
7 +  and 13 +
extended +
rhizomatous +  and stoloniferous +
aquatic +  and terrestrial +