Plants of indefinite duration; stoloniferous, stolons long and branching.
Culms 10-60 cm, occasionally branching from the lower nodes. Leaves
3-4, clustered near the base; sheaths usually glabrous; ligules
0.5-1 mm; blades 1.5-4 cm long, 3-5 mm wide, mostly glabrous, bases subcordate
and ciliate, with 0.6-1 mm papillose-based hairs. Panicles with 2(-4)
spikelike primary branches, digitate; primary branches 2-5 cm, strongly
divergent; branch axesabout 1 mm wide, wing-margined, wings wider than
the central midribs, with spikelets in unequally pedicellate groups of 3; secondary
branches rarely present; shortest pedicels about 0.3 mm; middle
pedicels about 1 mm; longest pedicels 1.5-2 mm, adnate to the branch
axes basally; axillary panicles not present. Spikelets 1.2-1.5
mm, elliptic or slightly obovate, acute. Lower glumes absent; upper
glumes equaling or almost equaling the spikelets, 5-veined, minutely pubescent
between the veins and on the margins; lower lemmas subequal to the upper
glumes, 7-veined, usually pubescent on the margins and lateral veins, occasionally
glabrous, hairs, if present, 0.2-0.4 mm; upper lemmas about 1.2 mm, pale
brown or pale gray, becoming light brown at maturity, acute; anthers
0.8-0.8 mm. 2n = 18.
Digitaria longiflora is native to Africa and Asia. It is now established
in disturbed areas of Florida, growing on railroad grades and in pastures and
The illustration of Digitaria longiflora was
inadvertently based on a misidentified specimen of D. fulvescens (J.
Presl) Henrard. The two species differ in little more than the pubescence
of their lemmas, D. longiflora having pubescent lemmas and D.
fulvescens glabrous lemmas (G. Davidse, pers. comm.). They should,
perhaps, be considered a single species (J. Wipff, pers. comm.). If
they are treated as a single species, the correct name for the species
is D. longiflora. [Note added by M.E. Barkworth, June 18, 2005.]