152 clvii. gramine^e (Stapf). [Sorghum. 
or finally turning black. Grain exserted, subglobose, slightly com- 
pressed, 2J-2J lin. by If lin., fuscous or waxy-yellow. 
Mozambique Distr. German East Africa : Uluguru ; Kiroka, Busse, 1161 ; 
Usagara, Busse, 1236. 
Probably a member of the caudatum group. 
26. A. S ., var. Stuhlmannii, Koern. in Baumann, Massailand, 295 
(name) ; ex K. S chum, in Engl. Pfl. Ost-Afr. B. 41. Panicle erect, 
almost 1 ft. by 3 in., contracted ; branches erect, tomentose at the 
base. Spikelets crowded, broad-rhombic to obovoid, lf-2 lin. long, 
firmly coriaceous, glossy black or very dark purple, sometimes with 
yellow tips, glabrous or nearly so, awned. Grain 2 j lin. by 2J lin. by 
14 lin., red with a tinge of yellow, exceeding the glumes by 1J-1J lin. 
Mozambique Distr. German East Africa : Unyamwezi ; Mzigua, Stuhlmann, 
476 ; Mpwapwa, Stuhlmann, 230 (probably). 
The specimen from Mpwapwa is said to have darker fruit and to yield a red 
flour. It is one of the most valued varieties of the district. Probably a 
member of the caudatum group. 
27. A. S var. subbicolor, Koern. in Baumann, Massailand, 295 
(name). 
Mozambique Distr. German East Africa : Urundi and West Usui, Baumann. 
28. A. S var. transiens, Hack, in DC. Monogr. Phan. vi. 508 (?) ; 
Chiov. in Ann. Istit. Bot. Roma, viii. 24. 
Nileland. Eritrea. 
Cultivated specimens grown at Pome from seed collected by Terracciano and 
Pappi in Eritrea. The specimens are described as much too immature to allow 
of precise determination. 
29. A. S., var. usaramensis, Busse & Pilger in Engl. Jahrh. xxxii. 
184. Panicle ample, loose, 10-16 in. long ; rhachis indistinct 
upwards. Glumes 3 lin. long, brown-purple with involute margins 
when mature, sparingly pubescent on the sides. Grain shorter than 
the glumes, lf-2 lin. long, white or whitish-yellow. 
Mozambique Distr. German East Africa : Usaramo ; Pugu and Kisserawe 
and Usagara, Kilossa, Busse, 395, 1135, 1165. 
No doubt a variety of S. Roxburghii. 
30. A. S var. Usorum, Koern. in Baumann, Massailand, 295, not 
in Bull. Herb. Boiss. ii. (1894) 226, nor in Koern. & Werner, Handb. 
Getreideb. i. 312 (?) ; Chiov. in Ann. Istit. Bot. Roma, viii. 24. 
Nileland. Eritrea : Bogos ; Keren- Agad, 2600 ft., Terracciano & Pappi, 2684. 
Mozambique Distr. German East Africa : Urundi, Baumann. 
Sorghum Usorum, Nees, is a form of S. Caffrorum. Hackel (in DC. Monogr. 
Phan. vi. 512) states that a form similar to typical var. Usorum was collected 
in Jur ( Schweinfurth , 180) and in Abyssinia (Herb. Paris, Schimper, 112) ; but 
on p. 517, No. 180 (partly), of Schweinfurth is indicated as the basis of his var. 
