152 XXVIII. (;iiAJiiNE.E. [Suryhuiih 



This variety seems to be widely spread iu tropical America 

 vinder the name African corn or Guinea corn. 



GiiLTNcio Ai/ro. — 8 to 12 ft. high, branched at the top, branches 

 and main axis blood-red at the base. Cultivated by the river Cuango 

 H Arimo do Isidro ; end of Sept. 1855. No. 7237. Native name 

 Massambalo. 



Cazengo.— A gigantic grass, 10 to 15 ft. or more, culm straight and 

 simple below, fasciculately branched above ; leaves generally with 

 blood-red spots, like the culm and branches. Grows spontaneously 

 in places formerly cultivated, and round the negro villages, and is 

 everywhere cultivated. On low hills by the river Luinha ; June 1855. 

 No. 7216. Native name Massamb;11a, Massa-M-bala. 



GoLUNco ALTo.—Sange, Quintal do Joaq. Velho. Cultivated nearly 

 everywhere ; Jan. 1855. No. 2995. 



The specimen consists only of a single leaf and a small piece of the 

 panicle, with small shortlyacute or blunt ovate unawned sessile spikelets, 

 scarcely 2 lines long. 



St. Jacob's Island, Cape Vkrdk, Islands. — Semispontaneous in 

 abandoned fields ; Jan. 1861. No. 2880. 



3. S. nutans Gray, Man. Bot. N. Unit. Stat. [ed. 2], p. 584. 



Andropogon mitans L. Sp. PI. p. 1045 (1753) ; Hack., I.e., p. 528. 



This species, hitherto unrecorded f jom the Old World, is repre- 

 sented by two very distinct varieties. 



Var. angolense Rendle var nov. 



Panicle elongated, lax, flexuose, branchlets capillary, 1- to 4- 

 flowered ; .spikelets submembranous, 3 lines long, awn pale, weak, 

 subimperfect (showing no marked difterentiation into column and 

 .subula), projecting 2 to 3 lines ; outer glume lanceolate, narrowly 

 truncate, pilo.se e.specially in the lower half, hairs white or faintly 

 tinged Avith purple, callus with a tuft of similar hairs, 7- to 

 9-nerved ; gl. II. glabrous except the pilosulose margins, 5-nerved ; 

 leaf-sheaths glabrous, blades linear, subscabridulous on upper 

 surface, 2 lines broad or less, upper ones convolute ; ligule 

 truncate, ^ to ^ line long. 



Near Hackel's wide-spread American var. avenaceum but dis- 

 tinguished by its more membranous shortly awned spikelets, lax 

 panicle, etc. 



Huilla. — Rather damp wooded meadows between LopoUo and 

 Catumba ; Feb. 1860. No. 7491. Damp wooded grassy places near 

 Catumba ; April 1860. No. 7496. 



Var. incompletum Hack., I.e., p. 531. 



The plants are larger, with spikelets a shade larger (2 to 2i 

 lines), and awns a trifle longer (1 ^ in.) than in the Mexican plants, 

 to which hitherto this variety has been confined, but otherwise 

 .similar and certainly inseparable varietally. 



PrN(;( ) Anj)( )N(;( >. — An annual cajspitose grass, slender, with coarctate 

 panicles, tawny gold and brightly shining when alive. Common in 

 sandy woods near Quilanga ; middle of April 1857. No. 2821. 



12. ANATHERUM Beauv. Agrost. p.;i28, t. 22, fig. x. (1812). 

 Vetiveria Thou, ex Vii^ey in Journ. Pharm. ser. 1. xiii. p. 499 



