Sorghum.'] 
CL VII. GRAMINE.ZE (Stapf). 
123 
— S. halepense, var. effusum, subvar. aristatum, Rendle in Cat. Afr. 
Pl. Welw. ii. 150 (partly). Andropogon Drummondii, Stend. Syn. 
PL Glum. i. 393. A. Sorghum, subsp. sativus, var. Drummondii, 
Hack, in DC. Monogr. Phan. vi. 507 (partly) ; Durand & Schinz, 
Consp. FI. Afr. v. 725 (partly). A. Sorghum Drummondii, Piper in 
Proc. Biol. Soc. Wash, xxviii. 42 (partly). 
Lower Guinea. Princes Island : in gravel near Porto de S. Antonio, Wel- 
witsch. 2932 ! Angola : Loanda ; in abandoned cultivation near Imbondeiro 
dos Lobos, Welwitsch, 12,77 ! without notes, Welwitsch, 7331 ! 
Introduced into the Southern States of North America previous to 1832 and 
known as “ Chiclcencorn ” in Mississippi and Louisiana, where it appears spon- 
taneously each year in cultivated ground {Piper). The American specimens 
examined are those collected by Drummond near New Orleans and S. Louis in 1832 
(herb. Kew, herb. British Museum, and herb. Lindley at Cambridge, the latter 
being part of the type of the species). Hackel refers to it specimens collected 
by Barter in Nupe (!) and by Newton inDahome (!) ; both are S. guineense, as 
is also a young specimen from the Senegal {Roger, a. 1823 !) mentioned by 
Piper under A. Sorghum Drummondii. Franchet also quotes S. Drummondii 
(under A. Sorghum, var. Drummondii) from Pongo, French Congo {Brazza & 
Thollon, 53), and adds that according to Thollon and Dybowski it is nowhere 
in that region cultivated for alimentary purposes and occurs in a subspon- 
taneous state. 
13. S. guineense, Stapf. Annual. Culms stout, tall, often waxy- 
pruinous below the nodes. Leaf-sheaths delicately pubescent at 
the nodes ; ligules very short, dark, ciliate from the back ; blades 
linear to linear-lanceolate from a broad clasping base, long-attenu- 
ated upwards, up to over 2 ft. by 3 in., bright to pale dull green 
flushed with purple, glabrous to tomentose inside above the ligule 
and glabrous to finely pubescent outside at the junction with the 
sheath, otherwise glabrous. Panicle oblong, up to over 1 (some- 
times almost 2) ft. long and up to 3 (rarely 4) in. wide, erect, con- 
tracted and rather stiff or more or less loose and then often secund 
with the branches at length drooping ; branches moderately slender 
at the base, more so upwards, usually very flexuous, whorled, often 
many from a node, or semiverticillate, the longest undivided for up 
to 1J in. from the base, but most branching from low down, all 
divisions more or less ciliolate towards the base (the primary often 
pubescent), finely scabrid upwards only. Racemes tough, 1-4- 
noded, usually crowded, rarely over \ in. long ; joints slender, 1 lin. 
long, rarely longer, shortly and often very scantily ciliate, cilia 
white; pedicels similar, of about - the same length, more ciliate; 
tips discoid. Sessile spikelet ovate- to oblong-lanceolate or oblong, 
conspicuously flattened on the back when young, then more or less 
convex, acute or acutely acuminate, 2J-3J lin. by 1 to over 1J lin., 
greenish or dull straw-colour to tawny, at length much darker, 
awned or awnless ; callus-beard scanty to almost none. Glumes 
equal, coriaceous, gradually thinner upwards, at length very hard or 
tough, lower about 13-nerved, finely and often obscurely 2-keeled 
towards the tips with the keels slightly scabrid and the nerves 
