Digitaria.~\ clvii. gramineas (Stapf). 437 
more or less prostrate, sometimes rooting, branched base, slender, 
glabrous, few- to many-noded, the uppermost inter node usually very 
long and long-exserted. Leaves glabrous or more or less hairy 
(particularly on the sheaths), hairs short or long and then usually 
spreading ; sheaths somewhat loose, thin, the lower often slipping 
off the culms and finally withering away ; ligules membranous, 
truncate, up to 1 lin. long, glabrous ; blades linear-lanceolate to 
linear, equally wide and slightly rounded at or somewhat narrowed 
towards the base, tapering to an acute point, 2-5 in. by 2-6 lin., 
flat, flaccid, with a finely cartilaginous scaberulous and not seldom 
crisp margin, midrib very slender, prominent and pale below, primary 
lateral nerves very fine, up to over 6 on each side. Racemes 4 to 
many, subdigitate or on an angular common axis of variable length 
(1 to several in. long), solitary or the lower subverticillate, erect or 
spreading, slender/straight or almost so, rarely flexuous, 1J-6 in. 
long, usually finely pubescent or bearded at the base ; rhachis 
slender, straight or slightly wavy, triquetrous, J-J lin. wide, often 
with a few scattered very fine and very long spreading hairs, pale, 
angles narrowly winged, scabrid, internodes up to 1^ lin. long, rarely 
longer ; pedicels 2-nate, one very short, the other up to f lin. long, 
triquetrous, scabrid. Spikelets appressed, not or only indistinctly 
imbricate, linear-oblong, acute, j-1 lin. long, pale green, usually 
apparently glabrous, at least when in flower. Lower glume a very 
minute ovate or truncate membranous scale, often quite obsolete ; 
upper lanceolate-oblong to oblong, obtuse or subacute, equalling 
gpf of the upper floret, thin, 3-nerved, with lines of silky hairs between 
the nerves and along the margins. Lower floret : valve of the 
outline and size of the spikelet, 7 -nerved, with lines of hairs between 
the inner pair of side-nerves and along the margins, hairs extremely 
fine, silky, thin-walled, obtuse but not widened at the tips, straight 
or nearly so, closely appressed at first, the marginal often spreading 
at maturity, § lin. long; valvule and lodicules microscopic. Upper 
floret linear-lanceolate, acuminate, at length brown ; thinly char- 
taceous, margins of valve distant at maturity. Anthers § lin. long. 
Grain oblong, J lin. by J lin., pale, subplano-convex ; scutellum 
elliptic, almost half the length of the grain. — D. horizontalis , Stapf 
in Dyer, FI. Cap. vii. 378, and in Kew Bulletin, 1907, 212 ; Wood, 
Natal PI. ii. t. 140 ; Pobeguin, Ess. FI. Guin. Frang. 219. D. 
jamaicensis , Spreng. Syst. i. 272. D. setosa, Hamilt. Prodr. Veget. 
Ind. Occ. 6. D. umbrosa, Link, Hort. Berol. i. 227. D. setigera, Hook. 
Niger FI. 185 ; not of Roth. D. sangmnahs , T. Thoms, in Speke, Nile 
Exp. 652 ; non Scop. D. sanguinalis, var. horizontalis^ Rendle in Cat. 
Afr. PI. Welw. ii. 163. . I). fenestrat a, JBuendle , L cj~ Milium digitatum, 
Sw. Prodr. FI. Ind. Occ. 24. Agrostis digitata* Poir. in Lam. Encycl. 
Suppl. i. 258. Axonojpus digitatus, P. Beauv. / Agrost. 154; Roem. & 
Schult. Syst. Veg. ii. 317. Panicum horizontal, G. F. W. Meyer, 
Prim. FI. Esseq. 54 ; Kunth, Enum. i. 81 ; Nees, FI. Afr. Austr. 24 ; 
