Digitaria velutina

(Forssk.) P. Beauv.
Treatment appears in FNA Volume 25. Treatment on page 378.

Plants of indefinite duration; loosely cespitose to straggling. Culms 15-80 m, decumbent, rooting and branching at the lower nodes. Sheaths pilose, with papillose-based hairs; ligules 1.8-2 mm; blades 4-15 cm long, 3-10 mm wide, pilose, with papillose-based hairs. Panicles with 5-18 spikelike primary branches on 2.5-5 cm rachises, lower branches usually verticillate; primary branches 3.5-10 cm long, 0.3-0.5 mm wide, narrowly wing-margined, wings less than 1/2 as wide as the midribs, bearing spikelets in unequally pedicellate pairs; secondary branches often present, often highly divergent; shorter pedicels 0.2-0.5 mm; longer pedicels 0.8-1.1 mm. Spikelets 1.5-2 mm long, about 0.5 mm wide, elliptic-lanceolate. Lower glumes absent or to 0.2 mm; upper glumes 1.5-1.7 mm, usually to 3/4 as long as the spikelets, 3-veined, villous between the veins, hairs tapering or parallel-sided; lower lemmas about as long as the spikelets, 7-veined, veins unequally spaced, 2 veins crowded together near each margin, 3 inner veins well-separated, pubescent on the margins and between the inner lateral-veins, hairs about 0.2 mm, sometimes sparse, lateral-veins smooth throughout or scabridulous only on the distal 1/3; upper lemmas 1.5-1.7 mm, usually gray at maturity, sometimes brown; anthers about 0.5 mm. 2n = 18.

Discussion

Digitaria velutina is an African species, appearing on the noxious weed list of the U.S. Department of Agriculture. It has been erroneously reported as occurring in Texas (Kartesz and Meacham 1999).

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Digitaria velutina"
0.5 cm5 mm <br />0.005 m <br /> (?) +
obtuse +  and acuminate +
anatomy +  and kranz +
J.K. Wipff +
(Forssk.) P. Beauv. +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
usually linear +  and lanceolate occasionally ovate +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 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 +
1,500 cm15,000 mm <br />15 m <br /> (8,000 cm80,000 mm <br />80 m <br />) +
1/5 +  and 1/2 +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
parallel-sided +  and papillose-based +
tapering +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
inconspicuous +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
pedicellate +
subterranean +
dry +  and fleshy +
3.5 cm35 mm <br />0.035 m <br /> (10 cm100 mm <br />0.1 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
in triplets +  and paired +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1 +  and 60 +
unisexual +  and bisexual +
elliptic-lanceolate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.82 cm8.2 mm <br />0.0082 m <br />) +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Digitaria velutina +
Digitaria +
species +
membranous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
brown +  and gray +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
cartilaginous +, coriaceous +  and indurate +
crowded +  and spaced +
perennial +  and annual +
plant +, loosely cespitose +  and straggling +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +
0 +  and 1/2 +