142 XXVIII. ORAMINE^. \^Andropogori 



10. ANDROPOGON L.; Benth. &Hook. f. Gen. Pl.iii. p. 1133 



Subgenus I. Schizachyrium. 



1. A. brevifolius Sw. Prodr. p 26 (1788) ; Hack. Mon. Androp. 

 p. 3G3 ; Durand & iSchinz, Consp. Fl. Afr. v. p. 707. 



G()HN(;i) Alto. — A very slender decumbent grass, rendering ex- 

 tremely difficult the ascent of the slopes, on account of its slippery 

 culms. On the sunny slopes of the mountains of Alta Queta, but in 

 few places ; May \^bh. No. 7250. On rather high and dry slopes on 

 the eastern side of Monte Queta : end of April 1856. No. 7205. 



PiNcid AxiiON(i(). — On rocky short-grassed slopes of Pedras de 

 Guinga, but growing sparsely, and intermixed with other grasses : 

 Jan. 1857. No. 7403. 



2. A. exilis 1 Locb.st. in Flora xxvii. p. 241 (1844); Hack., I.e., 

 p. 365; Durand & Schinz, I.e., p. 711. 



Var. glabrescens Rendle var. nov. 



Pubescent ; culms erect 36 to 40 in. long ; leaf-blades linear 

 acute 5 to 6 in. long by 1^^ lines wide; racemes 11 to 2 in. long, 

 exserted from the lanceolate acute spathe ; rhachis-joints glabres- 

 cent, the edges beaiing a short white pubescence at the base, 

 2 to 3 lines long, sessile spikelet and pedicel with aborted spikelet 

 .subequal, ] in. long, pedicel glabrous on back with a line of white 

 hairs on one or both edges ; outer glume of sessile spikelet densely 

 pilose on the back ; awn of sessile spikelet ^ in. , dark brown 

 column and pale yellowish subula equal, awn of stalked spikelet 

 pale, weak, 1| in. long or less. 



Distinguished from var. PetUianus Hack, by its less hairy spike- 

 lets and somewhat larger coarser racemes. 



PuNGO AxnONfw). — In rather damp woods at Mopopo, on the right 

 bank of the river Cuanza ; April 1857. No. 7423. 



3. A. hirtiilorus Kunth Rev. Gram. p. 569, 1. 198 (1829); Hook, 

 f. Fl. Brit. Ind. vii. p. 167 (1896) ; Hack., I.e., p. 371. 



A, PsPAulograya Steud. Syn. PI. Gram. p. 365 (1854); Hack., 

 I.e., p. 370; Durand & Schinz, I.e., p. 720. A. seniiherhis Kunth 

 Enum. i. p. 489 (1833) ; Hack., I.e., p. 369 ; Durand & Schinz, 

 I.e., p. 123. 



LoANDA. — Common in Capimeta near Quicuxe; May 1854. No. 7326. 



HuiLLA. — In marshy woody places near Catumba, but not yet in 

 flower. The locality was subsequently destroyed by the fires of the 

 Monanensian war. A single specimen in flower Feb. 1860. No. 2650. 



After careful comparison of the American A. hirtiflorns and 

 the Asiatic A. Fseudograya, I am forced to the same conclusion 

 as that arrived at by Sir Joseph Hooker {I.e.), namely, that the 

 two are not specifically distinct. There is, however, considerable 

 variation in the size of the spikelets, especially of the pedicelled, 

 in the thickness of the rhachis-joint, and in the indumentum and 

 colovir. The American species can generally be distinguished 

 by the slate-coloured and densely hairy spikes; in Asiatic and 

 African species they are less hairy and generally rufous. 



