Sorghum.'] 
CLVII. GRAMINEiE (Stapf). 
143 
almost wholly adnate to the awn which is 2-3 lin. long, very 
slender, slightly twisted below the middle. Lodicnles very small and 
glabrous. Anthers over 2 lin. long. Pedicelled spikelets none or 
quite rudimentary and minute. — S. nutans , var. angolense , Rendle 
in Cat. Afr. PL Welw. ii. 152. 
Lower Guinea. Angola : Huilla ; between Lopollo and Catumba, Wel- 
witsch, 7491 ! damp wooded grassy places near Catumba, Welwitsch, 7496 ! 
Mozambique Distr. Portuguese East Africa : Beira, Rogers, 5939 ! 
Rhodesia : Salisbury, Mrs. Craster, 63 ! Qweebi Flats, Allen, 686 ! Insiza 
District, Mundy, 21 ! and without precise locality, Allen, 740 ! 
30. S. rigidifolium, Staff. Perennial (?). Culms erect, apparently 
simple and tall (over 4 ft. high), somewhat stout, 4-6-noded, upper 
internodes exserted, smooth, glabrous. Leaf-sheaths terete, rather 
tight, firm, striate, smooth, glabrous except at the appressedly 
bearded nodes, produced into short auricles along the ligule ; ligules 
firm, scarious, from very short to 1 lin. long, more or less hairy from 
the back, glabrescent ; blades linear, rather shortly tapering to a hard 
point, hardly narrowed at the base, very variable in length, up to 
1 J ft. long and 3 lin. wide, flat or involute, firm and rigid, glabrous, 
smooth except on the upwards very scabrid margins, midrib usually 
slender, lateral nerves numerous, very close. Panicle erect, narrow, 
up to 1 ft. long ; rhachis smooth, glabrous or with a few hairs at the 
nodes ; branches semiverticillate, in dense fascicles from the nodes, 
very unequal, the longest up to 4 in. long, divided from near the 
base, up to 8-noded, the longest branchlets divided again, filiform to 
capillary, more or less flexuous, smooth, glabrous, tips discoid- 
clavate. Racemes 4-1-noded ; each sessile spikelet except the 
uppermost accompanied by 1 empty pedicel, the uppermost (or in 
1-noded racemes the solitary spikelet) by 2 empty pedicels ; joints 
and pedicels finely filiform, ciliate, cilia J lin. long ; joints 2-2 J- lin. 
long ; pedicels 1J-2 lin. long. Spikelets oblong to lanceolate- 
oblong, obtuse to subacuminate, 2J-3 lin. long, brown with pale 
tips. Glumes equal, subcoriaceous to coriaceous ; lower truncate, 
loosely hairy on the back, rigidly ciliolate at the subterminal keels 
and tips, finely 9-nerved ; upper very similar, 5-nerved. Valves of 
lower floret broad-oblong, 2 lin. long, minutely ciliolate from the 
middle, 2-nierved ; of upper oblong, eciliolate or almost so, If lin. 
long, 3-nerved, lobes almost wholly adnate to the awn ; awn 4-7 lin. 
long, very slender, kneed at and twisted below the middle. Lodi- 
cules glabrous. Anthers 1J-2 lin. long. 
Nileland. Uganda : Nandi country ; Sibu, James ! British East Africa : 
Nairobi, Lyne, 146 ! Johnstone, 162 ! and without precise locality, Powell, 137 ! 
v Var. microstachyum, Stapf. Spikelets 2 lin. long, awn reduced to a bristle, 
1^-2 lin. long. 
Nileland. Uganda : Kavirondo, a common grass, 4000 ft., Scott Elliot, 7050 ! 
Miss Johnstone’s specimens are somewhat anomalous, as in a few racemes 
the terminal trio is represented by 2 sessile spikelets, both § or one £ , and an 
