Sorghum .] 
CLVII. GE AMINES (Stapf). 
127 
broad-oblong, as long as the glumes, upper broad-ovate, lj-lf lin. 
long, middle nerve much thickened from the middle upwards, 
running out into a short straight mucro, lobes adnate to it almost 
all along. Anthers 1| lin. long. Grains elliptic or ovate-elliptic in 
outline, lf-2J lin. by 1J-1J lin., dull white (in the African speci- 
mens). Pedicelled spikelet usually neuter, linear or linear-lanceo- 
late, up to 2 lin. long, more often much reduced and quite small, 
persistent ; lower glume if well developed up to 9-nerved, upper 
5-nerved. 
There are several cultural races of 8. Roxburghii known in India, and so far 
two of them have been found in tropical Africa, namely :• — 
1. Var. semiclausum, Stapf. Panicles fairly dense, also when mature. 
Glumes less coriaceous towards the tips and more or less showing the nerves in 
that portion, permanently more or less strigillose, their margins clasping the 
grain so that only its top or upper half is exposed. — Holcus Sorghum minus et 
Sisna, Wall. Cat. 8777 F.H. A. Sorghum, subsp. sativus, var. Roxburghii (?) 
and fulvus, Hack, in DC. Monogr. Phan. vi. 510 and 512. A. Sorghum, var. 
Usorum (?), Stapf in Dyer, FI. Cap. vii. 348, in note ; Medley Wood, Natal PI. ii. 
t. 120, not of Koern., nor of Hack. 
Nileland. Uganda: Entebbe, Fyffe, 281! British East Africa: Eabai 
Hills, near Mombasa, Taylor ! 
Mozamb. Distr. German East Africa : Kilossa, Busse ! Portuguese East 
Africa : Zambesi Delta ; Vicente, Scott ! Nyasaland : Lokoma Island, Lake 
Nyasa, Johnson, 81 ! 
Also in Natal, Madagascar and India. 
2. Var. Mans, Stapf. Panicles more or less loose with very flexuous and 
often drooping branches. Glumes coriaceous to the tips with the nerves quite 
obscure, subglabrous and somewhat glossy on the back when mature, their 
margins involute, exposing the whole grain, which is often placed with its back 
and front parallel to the median line of the spikelet. — Holcus Sorghum niti- 
dum. Wall. Cat. 8777 D. A. Sorghum, var. Mans, Stapf in Hook. f. FI. Brit. 
India, vii. 184. A. S., var. Roxburghii, K. Schum. in Engl. Pfl. Ost-Afr. B. 48 ; 
C. t. iv. F-H ; Busse & Pilger in Engl. Jahrb. xxxii. 184, partly. 
Mozamb. Distr. Zanzibar, Hildebrandt, 13446 ! 
Vern. name Mtama-Mope (Zanzibar). 
Also in India. 
Hackel quotes under Andropogon Sorghum, var. Roxburghii, Roxburgh^ 
Andropogon saccharatus. From Roxburgh’s description (FI. Ind. i. p. 274 ; ed. 
Carey i. 271), I should suggest it to be var. Mans rather than var. semi- 
clausum, and this seems to be supported by the fact that Wight quotes Andro- 
pogon saccharatus, Roxb., as a synonym of his No. 1670 which is var. Mans; 
but as there is no figure of this form in Roxburgh’s collection of drawings and 
Roxburgh does not mention the curiously exposed grains, the point must remain 
undecided. 
This species includes the forms cultivated in North America under the name 
of Shallu, an Indian vernacular. . 
(\\aucXl*) 
16. S. bicolor. Moench , Method. 207, var. obovatum A Stapf. 
Annual. Culms stout, up to 14 ft. high, many-noded. Leaf-sheaths 
mostly overlapping, finely pubescent at the nodes ; ligules short, 
ciliate from the back ; blades linear to lanceolate-linear from a 
broad and rounded or slightly narrowed base, up to 20 in. long and 
3 in. broad, pubescent to tomentose inside above the ligules and 
