Bouteloua kayi

Warnock
Common names: Kay’s grama
Endemic
Treatment appears in FNA Volume 25. Treatment on page 264.

Plants perennial; cespitose, without rhizomes or stolons. Culms 10-50 cm, erect; nodes glabrous; internodes glabrous, scabridulous between the veins. Leaves mostly basal; sheaths scabridulous or glabrous, sparsely pubescent basally; ligules 0.3-0.5 mm, membranous, ciliate; blades to 20 cm long, 0.5-1.5 mm wide, involute, scabridulous adaxially. Panicles 8-11 cm, with 7-20 branches; branches 15-30 mm, persistent, with (6) 14-20 pedicellate spikelets, axes terminating in a spikelet; pedicels 0.6-0.8 mm; disarticulation above the glumes. Spikelets 6-8 mm, pectinate, with 1 bisexual and 1 rudimentary floret. Glumes subequal, 2.5-4 mm, glabrous, acute or bidentate, midvein sometimes excurrent as a mucro or short awn; lowest lemmas 5-7 mm, glabrous, 3-awned, awns 3-4 mm, central awns flanked by 2 membranous, acuminate, 0.4—0.6 mm lobes; lowest paleas sometimes reduced to 2 awns, awns 1-2 mm, anthers 1.2-1.3 mm, yellow; second florets glabrous, reduced to 1-3 awns, awns 3-4 mm. 2n = unknown.

Discussion

Bouteloua kayi is only known from the mountainous limestone terrain along the Rio Grande River in south-western Brewster County, Texas, at 2200-2500 m. Superficially, it resembles B. trifida.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bouteloua kayi"
1 +  and 3 +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
J.K. Wipff +
Warnock +
1 (?) +  and 3 (?) +
well-developed +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
0 cm0 mm <br />0 m <br /> (20 cm200 mm <br />0.2 m <br />) +
pubescent +  and glabrous +
scabridulous +
usually linear +  and lanceolate occasionally ovate +
0.5mm;1.5mm +
subdigitate +  and digitate +
75 cm750 mm <br />0.75 m <br /> (?) +
persistent +
spikelike +
not woody +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Kay’s grama +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
not woody +
not waisted +
capillary +
pistillate +  and staminate +
4-lobed +  and trilobed +
sometimes longer +
rudimentary +
1 +  and 3 +
round +  and compressed +
reduced +
shorter or longer +
subtending +
both +  and 1 +
bidentate +  and acute +
subequal +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
scabridulous +
not absent +
5-veined +, 7-13-veined +  and 1-3-veined +
sometimes longer +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
acuminate +
membranous +
inconspicuous +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
concealed +  and prominent +
2 +  and 1 +
8 cm80 mm <br />0.08 m <br /> (11 cm110 mm <br />0.11 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
dry +  and fleshy +
spikelike +
elongate +
flabellate +
pubescent +  and glabrous +
scabridulous +
14 +  and 20 +
pectinate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Bouteloua kayi +
Bouteloua subg. Chondrosum +
species +
membranous +
7 +  and 13 +
extended +
rhizomatous +  and stoloniferous +
plant +  and cespitose +
aquatic +  and terrestrial +