166 XXVIII. GRAMINES. [Digitaria 
truncate, generally oblique. Panicle 5 to 7 in. long; rhachis 
slender, elongated, bearing numerous filiform lateral branches on 
which the spikelets are arranged singly, or, in the lower portion, 
on short few-flowered branchlets ; articulation of spikelets large, 
shortly hairy. Lower glume acutely triangular from a rounded 
gibbous base, 3-nerved, densely covered with long stiff hairs, 14 line 
long; upper subacute with thinly membranous incurved edges, the 
nerves densely hairy, 1} line long ; fertile glume slightly shorter 
than the upper barren glume, glabrous, the edges incurved above 
the middle, thin, and translucent, becoming convolute above to 
form an abruptly acute apex ; pale narrower, similar in form and 
texture to the glume. 
HuiLia.—A cespitose grass, with erect leaves and culms, and silvery- 
shining spikelets. Common in sandy clayey thickets near Lopollo ; 
2 Dec. 1859. No. 2634. 
Material insufficient for specific determination :— 
Srerra Leone.—Sept. 1853. No. 2942. 
20. ERIOCHLOA H. B. & K. ; Benth. & Hook. f. Gen. PI. iii. 
p. 1099. 
1. E. polystachya H. B. & K. Nov. Gen. & Sp. i. p. 95, t. 31 
(1815) ; Durand & Schinz, Consp. Fl. Afr. v. p. 739. 
E. annulata Kunth Rev. Gram. i. p. 30 (1829). 2. punctata 
Hamilt. Prodr. Pl. Ind. Oce. p. 5 (1825); Durand & Schinz, ic, 
p. 739. Panicwn annulatum A. Rich. Tent. Fl. Abyss. ii. 
p. 370 (1851). 
Loanpa.—Banks of ponds in sandy clayey soil above Forte do 
Conceicao ; rather rare ; perennial ; 12 July 1854. No. 7344. A grass 
a foot high, in habit simulating a dwarf form of Glyceria jluitans.. In 
clayey sandy soil round the artificial ponds (represa), of Sr. Luiz 
Gomes, south of Loanda ; May 1858. No. 7289. A small prostrate 
perennial grass. Around ponds, dry in winter, near Bemposta, but 
sparse ; Jun. 1858. No. 7283. 
21, ISACHNE R. Br. ; Benth. & Hook. f. Gen. Pl. iii. p. 1100. 
1. I. angolensis Rendle sp. nov. 
Shoots decumbent and much branched below, then erect, leafy 
up to the panicle, leaves narrowly sublanceolate-linear, acute ; 
panicle large, habit of J. multiflora ‘Trim., branches spreading, 
densely flowered in the upper two-thirds from the appressed 
secondary branches; spikelets like the rhachis and branches reddish- 
purple, oval, blunt, 1 line long ; barren glumes subequal with 
broad colourless margins ; lower fertile glume oval, overtopping 
the barren glumes, enclosing a % flower, upper shorter enclosing 
a ? flower. 
Shoots copiously branched below, rooting at the lowermost 
nodes, nearly 1} ft. high ; nodes geniculate, purplish, glabrescent. 
Leaves 2 to 4 in. long by 2 to 22 lines broad, glabrous, faces 
verruculose, veining rather prominent on the lower ; ligule com- 
prising a row of rather long (1 line) whitish hairs; sheaths, 
except the uppermost, about equal to the internodes, striate, tinged 
