Digitaria texana

Hitchc.
Endemic
Treatment appears in FNA Volume 25. Treatment on page 374.
Revision as of 02:57, 30 July 2020 by imported>Volume Importer
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Plants perennial; not rhizomatous. Culms 30-80 cm, sometimes erect, usually decumbent and branching and rooting at the lower nodes, not branching at the upper nodes. Sheaths of the lower leaves villous, those of the upper leaves sometimes glabrous, those of the flag leaves without axillary panicles; ligules 1.5-2 mm; blades 10-15 cm long, 2-7 mm wide, hirsute to nearly glabrous. Panicles with 5-10 spikelike primary branches on 1-4 cm rachises; primary branches 5-10 (13) cm, axes triquetrous, narrowly winged, wings less than 1/2 as wide as the midribs, lower and middle portions of the branches bearing paired spikelets; secondary branches rarely present. Spikelets 2-3.6 mm, narrowly ovate-oblong, acute. Lower glumes absent; upper glumes almost as long as the spikelets, 3 (5) -veined, shortly villous on the margins and sometimes between the margins; lower lemmas similar to the upper glumes; upper lemmas gray or yellow, sometimes purple-tinged, becoming purple at maturity. Caryopses narrowly oblong. 2n = 54.

Discussion

Digitaria texana grows in sandy oak woods and prairies of southern Texas and Florida.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Digitaria texana"
obtuse +  and acuminate +
anatomy +  and kranz +
J.K. Wipff +
Hitchc. +
1 (?) +  and 3 (?) +
triquetrous +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
hirsute +  and nearly glabrous +
usually linear +  and lanceolate occasionally ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
triquetrous +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not developed +
sometimes longer +
not branching +, rooting +  and branching +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
Fla. +  and Tex. +
1/5 +  and 1/2 +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
inconspicuous +
(3)5-7(13)-veined +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
dry +  and fleshy +
13 cm130 mm <br />0.13 m <br /> (?) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
glabrous +  and villous +
1 +  and 60 +
unisexual +  and bisexual +
acute +  and ovate-oblong +
0.2 cm2 mm <br />0.002 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Digitaria texana +
Digitaria +
species +
membranous +
purple-tinged +, yellow +  and gray +
cartilaginous +, coriaceous +  and indurate +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +
0 +  and 1/2 +