Bouteloua warnockii

Gould & Kapadia
Common names: Warnock's grama
Treatment appears in FNA Volume 25. Treatment on page 254.

Plants perennial; cespitose, forming clumps 4-10 cm in diameter, without rhizomes or stolons. Culms 20-35 (50) cm, stiffly erect. Leaves bluish-green, more or less glaucous; sheaths mostly glabrous, hairs present distally; ligules 1-1.5 mm, of hairs; blades 5-15 (25) cm long, 1-1.5 (2.5) mm wide, stiffly erect or curving, involute when dry; mostly glabrous, ligular area with long and short hairs, bases usually with papillose-based hairs on the margins. Panicles 5-13 (20) cm, with 9-15 (30) branches; branches 4-5.5 mm, deciduous, scabrous, with 2-6 spikelets, axes terminating well beyond the terminal spikelets, apices entire; disarticulation at the base of the branches. Spikelets 5-6.5 mm, with 1 bisexual and 1 sterile floret, appressed, all alike, green, often with a brownish or purplish cast. Lower glumes slightly shorter than the upper glumes, both usually exceeded by the lemmas of the lowest florets; upper glumes glabrous, sometimes scabrous; lowest lemmas glabrous, acute, 3-awned, awns less than 1 mm, central awns not flanked by 2 membranous lobes; anthers 2.2-3.7 mm, dark purple; second florets sterile, usually without paleas; second lemmas reduced to a glabrous awn column, sometimes moderately well-developed and 3-awned, awns usually not exserted, central awns to 2.5 mm. 2n = 21, 22, 23, 24, 25, 28, 38, 40.

Discussion

Bouteloua warnockii grows on limestone ledges and dry slopes below limestone outcrops. Its range extends from the southwestern United States to the state of Coahuila in northern Mexico. It frequently grows, and may hybridize with, B. curtipendula var. caespitosa.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bouteloua warnockii"
40 +, 38 +, 28 +, 25 +, 24 +, 23 +, 22 +  and 21 +
dark purple +
1 +  and 3 +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
J.K. Wipff +
Gould & Kapadia +
1 (?) +  and 3 (?) +
well-developed +
exserted +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 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 /> (15 cm150 mm <br />0.15 m <br />) +
usually linear +  and lanceolate occasionally ovate +
1mm;1.5mm +
subdigitate +  and digitate +
75 cm750 mm <br />0.75 m <br /> (?) +
spikelike +
not woody +
purplish +  and brownish +
triangular +  and dome--shaped +
0 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
sometimes longer +
membranous +
Warnock's grama +
20 cm200 mm <br />0.2 m <br /> (35 cm350 mm <br />0.35 m <br />) +
not woody +
N.Mex. +  and Tex. +
not waisted +
capillary +
pistillate +  and staminate +
4-lobed +  and trilobed +
sometimes longer +
sterile +  and bisexual +
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 +
not absent +
bluish-green +
5-veined +, 7-13-veined +  and 1-3-veined +
well-developed +
reduced +
sometimes longer +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
membranous +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
20 cm200 mm <br />0.2 m <br /> (?) +
5 cm50 mm <br />0.05 m <br /> (13 cm130 mm <br />0.13 m <br />) +
dry +  and fleshy +
spikelike +
elongate +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
flabellate +
sessile +  and subsessile +
terete +, compressed +  and pectinate +
0.5 cm5 mm <br />0.005 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Bouteloua warnockii +
Bouteloua subg. Bouteloua +
species +
membranous +
7 +  and 13 +
extended +
rhizomatous +  and stoloniferous +
plant +  and cespitose +
aquatic +  and terrestrial +