Digitaria nuda

Schumach.
Introduced
Treatment appears in FNA Volume 25. Treatment on page 378.

Plants annual or of indefinite duration. Culms 20-60 cm, glabrous, decumbent, rooting and branching from the lower nodes, geniculate above. Sheaths glabrous or with long hairs near the base; ligules 0.8-2.5 mm; blades 2-13.5 cm long, 1.5-2.5 mm wide, glabrous on both surfaces or the adaxial surface with a few long hairs near the base. Panicles with 3-8 spikelike primary branches, these digitate or with rachises to 2 cm long; lower panicle nodes with hairs at least 0.4 mm; primary branches 4-15.5 (20) cm long, 0.4-0.8 mm wide, axes wing-margined, wings more than 1/2 as wide as the midribs, proximal portions of the branches often with scattered 1-4 mm hairs, bearing spikelets in unequally pedicellate pairs on the lower and middle portions of the branches; secondary branches absent; pedicels not adnate to the branches. Spikelets homomorphic, 1.7-2.8 mm long, 0.5-0.8 mm wide. Lower glumes absent or to 0.2 mm; upper glumes 1-2.2 mm, 0.4-0.8 times as long as the spikelets; lower lemmas about as long as the spikelets, 7-veined, veins smooth, lateral-veins usually equally spaced, sometimes the inner lateral-veins more distant from the other 2, intercostal regions adjacent to the midveins glabrous, those between the lateral-veins with 0.5-1 mm hairs, hairs initially appressed, sometimes strongly divergent at maturity; upper lemmas yellow to gray when immature, becoming brown at maturity; anthers 0.3-0.6 mm. 2n = unknown.

Distribution

Puerto Rico, Virgin Islands

Discussion

Digitaria nuda is an African species that is now established in tropical regions throughout the world, including the Americas. So far as is known, it has only been collected once in the Flora region, in Columbia County, Florida.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."-0.8timesaslongasthespikelets" is not declared as a valid unit of measurement for this property.

... more about "Digitaria nuda"
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
obtuse +  and acuminate +
anatomy +  and kranz +
J.K. Wipff +
Schumach. +
1 (?) +  and 3 (?) +
wing-margined +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
2 cm20 mm <br />0.02 m <br /> (13.5 cm135 mm <br />0.135 m <br />) +
usually linear +  and lanceolate occasionally ovate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
triquetrous +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not developed +
planoconvex +
sometimes longer +
branching +  and rooting +
decumbent +  and erect +
geniculate +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Puerto Rico +  and Virgin Islands +
1/5 +  and 1/2 +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
membranous +
inconspicuous +
(3)5-7(13)-veined +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
pedicellate +
with rachises +  and digitate +
subterranean +
not adnate +
dry +  and fleshy +
4 cm40 mm <br />0.04 m <br /> (15.5 cm155 mm <br />0.155 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
with long hairs +  and glabrous +
Introduced +
in triplets +  and paired +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
1 +  and 60 +
unisexual +  and bisexual +
compressed +, lanceoloid +  and ellipsoid +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.82 cm8.2 mm <br />0.0082 m <br />) +
0.5mm +  and 0.8mm +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Digitaria nuda +
Digitaria +
species +
membranous +
0.1 cm1 mm <br />0.001 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
brown +, yellow +  and gray +
cartilaginous +, coriaceous +  and indurate +
of indefinite +  and annual +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +
/2 +  and 1 +