140 
CLVII. GKAMlNEiE (Stapf). 
[ Sorghum . 
shortly bearded at the nodes ; branches 3-2-nate, filiform, flexuous, 
often nodding, undivided for £-1 in., sparingly hairy below the 
racemes. Racemes rather stout, rather tough, 4-noded, bearded 
at the nodes, up to over 1 in. long ; joints about 2| lin. long, densely 
hairy along the sides and more or less so on the back, hairs pale to 
dark rufous, 1-1J lin. long. Sessile spikelet lanceolate, 4-5 lin. 
long, 1 lin. broad ; lower glume coriaceous, except at the scarious 
truncate tip, 7-9-nerved, pale straw-colour or dark brown or at 
length a deep glossy black, rigidly hairy along the involute sides 
and ciliate towards the tip, callus short ; upper glume slightly 
exceeding the lower, coriaceous, almost glabrous, 7-nerved. Valve 
of lower floret linear-lanceolate, acute, white, ciliate, 2-nerved ; of 
upper floret hyaline, broad-ovate-oblong, 2-2J lin. long, 3-nerved, 
2-lobed to a fifth or quarter, ciliate, awn up to 2 in. long, twisted to 
the middle, column dark brown, minutely ciliate along the spiral, 
bristle pale. Anthers 2-3 lin. long. Grain 2 lin. by J lin. Pedi- 
celled spikelet narrowly lanceolate, about 4-4 J lin. long ; glumes 
acute, more or less hairy, lower 7-11-, upper 5-7-nerved, nerves 
distinct, green ; florets (if present) reduced to their valves, upper 
$ or neuter like the lower ; valve of lower almost as long as the 
glumes, ciliate, of upper up to 3 lin. long, minutely 2-toothed, some- 
what firmer along the middle, otherwise delicately hyaline, ciliate. — 
Andropogon pur pur eo -sericeu s, Hochst. ex A. Rich. Tent. FI. Abyss, ii. 
469 ; Hack, in DC. Monogr. Phan. vi. 524 ; Engl. Glied. Veget. 
Usambara, 38 ; K. Schum. in Engl. Pfl. Ost-Afr. C. 98 ; Durand & 
Schinz, Consp. FI. Afr. v. 721 ; Chiov. in Ann. Istit. Bot. Roma, 
viii. 25. 
North Central. Bagirmi: Moito, Boro, Aoumi, Chevalier, 9794! 
Nileland. Eritrea : Assaorta, Jugal Ras Koral, Terracciano & Pappi, 2790, 
2791. Gallabat : Matamma, gregariously, Schweinfurth, 1033 ! 1040 ! Abys- 
sinia : Sana ; in swamps, in the hilly district of Walcha, Schimper, 1551 ! in 
moist places at Jaja, 6000 ft., Schimper, 243 ! and without precise locality, 
Schimper, 1417. 
Mozambique Distr. German East Africa : Usambara (according to Engler, 
l.c.), and from Tana River to Rovuma River (according to K. Schumann). 
Hackel’s varieties pallidior ( Schweinfurth , 1033) and calomelas ( Schimper , 
1417, evidently the same as Schimper, 243) represent in my opinion only indi- 
vidual variations. Chevalier's specimen combines the pale sessile spikelets of 
pallidior with the reduced pedicelled spikelets of calomelas . A pale form with 
somewhat smaller (young) spikelets was collected in the Transvaal, in wet places 
near Marabastad (Schlechter, 4335). 
27. S. dimidiatum, Stapf. Perennial (?) about 2 ft. high. Culms 
geniculately ascending, branched, 3- or more (?)-noded, internodes 
enclosed. Leaf-sheaths terete, smooth, glabrous, subherbaceous, 
with a dense white spreading beard 2J lin. long at the nodes and 
another at the junction with the blade ; ligules very short, mem- 
branous, ciliate and long-hairy from the back ; blades linear, long- 
attenuated to a fine point, slightly narrower towards the base, to 
