Bouteloua uniflora

Vasey
Common names: Neally's grama
Treatment appears in FNA Volume 25. Treatment on page 255.

Plants perennial; cespitose, without rhizomes or stolons. Culms 20-60 cm, stiffly erect, glabrous. Sheaths mostly glabrous, a few long hairs present near the ligules; ligules 0.2-0.5 mm, of hairs; blades 6-16 cm long, 1-2 mm wide, involute when dry, glabrous, bases usually with papillose-based hairs on the margins. Panicles 5-10 (14) cm, with 15-70 branches; branches 5-9 mm, deciduous, scabrous, with 1 spikelet (lower branches occasionally with 2 spikelets), axes extending 3-4 mm beyond the terminal spikelets, apices entire; disarticulation at the base of the branches. Spikelets appressed, with 1 bisexual and 0-1 rudimentary florets. Glumes acute to slightly cleft and minutely apiculate, midveins usually scabrous; lower glumes 2.5-4 mm; upper glumes 6.2-8 mm, mostly smooth, midveins usually scabrous; lowest lemmas 6-7.5 mm, acute or minutely cleft, glabrous, unawned, sometimes mucronate; lowest paleas unawned, glabrous; anthers 2.5-3 mm, bright-yellow; second florets absent or reduced to 1 or 3 short awns, glabrous. Caryopses about 3 mm. 2n = 20.

Discussion

Bouteloua uniflora grows primarily in fertile, rocky, limestone soils of Texas and adjacent Coahuila, Mexico at 300-1000 m. A disjunct collection has been reported from Zion National Park, Utah. Plants in the Flora region belong to Bouteloua uniflora Vasey var. uniflora, which differs from B. uniflora var. coahuilensis Gould & Kapadia in having taller (40-60 cm, not 20-40 cm) leafy, rather than scapose, culms, longer leaf blades (12-16 cm versus 6-12 cm), and 50-70, rather than 15-40, panicle branches.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bouteloua uniflora"
bright-yellow +
1 +  and 3 +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
J.K. Wipff +
1 (?) +  and 3 (?) +
well-developed +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
6 cm60 mm <br />0.06 m <br /> (16 cm160 mm <br />0.16 m <br />) +
usually linear +  and lanceolate occasionally ovate +
1mm;2mm +
subdigitate +  and digitate +
75 cm750 mm <br />0.75 m <br /> (?) +
spikelike +
not woody +
3 cm30 mm <br />0.03 m <br /> (?) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Neally's grama +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
not waisted +
capillary +
pistillate +  and staminate +
4-lobed +  and trilobed +
sometimes longer +
rudimentary +
0 +  and 1 +
round +  and compressed +
reduced +
apiculate +  and cleft +
shorter or longer +
subtending +
both +  and 1 +
acute to slightly +
subequal +  and unequal +
papillose-based +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
not absent +
5-veined +, 7-13-veined +  and 1-3-veined +
sometimes longer +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
inconspicuous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
mucronate +, cleft +  and acute +
0.6 cm6 mm <br />0.006 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
concealed +  and prominent +
2 +  and 1 +
14 cm140 mm <br />0.14 m <br /> (?) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
dry +  and fleshy +
spikelike +
elongate +
flabellate +
sessile +  and subsessile +
terete +, compressed +  and pectinate +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Bouteloua uniflora +
Bouteloua subg. Bouteloua +
species +
membranous +
0.62 cm6.2 mm <br />0.0062 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
7 +  and 13 +
extended +
rhizomatous +  and stoloniferous +
plant +  and cespitose +
aquatic +  and terrestrial +