Digitaria . ] 
ciiVii. graminBj® (Stapf). 
429 
Spikelets aristulate from the fertile floret, oblong- 
lanceolate ; spikelets apparently glabrous or the 
hairs spreading at maturity ... ... ... 39. D. aristulata, 
( h ) Pennatjs. 
Only species 40. D. pennata. 
( i ) FLACCIDULiE. 
Spikelets oblong -lanceolate, acute to acuminate, If lin. 
long, pale, slightly whitish silky and shortly bearded 
from the base ... ... ... ... ... ... 41. D. nitens. 
Spikelets lanceolate, acutely acuminate, 1£ lin. long, 
green tinged with purple, dark purplish-silky ... 42. D. elegans. 
II. Setariopsis. 
Upper glume present ; bairen valve as long as or almost 
as long as the spikelet, tightly appressed to the face 
of the fertile floret, 3 -nerved. 
Racemes long, mostly simple, in oblong contracted or 
often open panicles, often ftj,stigiate. 
Perennial ; culms with few usually bearded nodes ; 
spikelets hn. l° n g • • • • • • • • • • • • 43. D. uniglumis. '/7 
Annual ; culms with 4-6 glabrous nodes ; spikelets 
lin. long 44. D. minutiflora. 
Racemes short, mostly compound, in spiciform panicles ; 
perennial ... ... ... ... ... ... 45. D. Myuru$. 
Upper glume 0 ; barren valve small, 1 -nerved ; annual 46. D. intecta. 
1. D. eriantha, Steud. in Flora , 1829, 468. Perennial, compactly 
caespitose on a short stout prsemorse rhizome ; innovations intra- 
vaginal. Culms erect or subgeniculate, rather stout, 1J-3 ft. high, 
glabrous, 2-4-noded, usually simple, sometimes scantily branched 
below. Leaf-sheaths rather loose, striate, the upper shorter than 
the internodes, glabrous, more rarely the lower more or less hirsute, 
the lowest like the cataphylls of the innovations silky-tomentose 
at the base, long-persistent and densely coating the shoots ; ligules 
scarious, 1-2 lin. long, glabrous ; blades linear, tapering to a fine point, 
J-l ft. by 1-2 lin., or the lowest much shorter, flat or with the 
margins revolute, rigid, glaucous, glabrous or scantily hirsute at the 
base, margins scabrid upwards, primary lateral nerves numerous, 
very fine and close. Racemes 4 to many, sessile, digitate or sub- 
digitate with a usually stout and angular common rhachis up to 
over 1 in. long, erect or suberect, 4-8 in. long, strict or somewhat 
flexuous, dense, sometimes interrupted near the base, greyish-green 
or purplish ; rhachis slender, J-J lin. wide, trigonous, angles 
marginate or very narrowly winged, scabrid ; pedicels 2-nate, 
filiform, more or less angular, scaberulous, unequal, the longer 1 lin., 
rarely up to 1J lin., long. Spikelets subappressed, subimbricate, 
oblong- or ovate-lanceolate, lj-lj lin. long, more or less (some- 
times obscurely) silky on the sides. Lower glume membranous, 
