366 
FLORA OF ADEN. 
Setaria chlorantha Schur Enum. PI. Transs. 723. 
Setaria decipiens C. Schimp. ex Nym. Consp. 787. 
Setaria imberbis Roem. et Schult. Syst. II, 891. 
Setaria Weinmanni Roem. et Sohult. 1. c. 490. 
Setaria nana Dum. Obs. Gram. Belg. 139. 
Setaria penicillata Wall. Cat. n. 8640 D. 
Setaria villosa Beauv. Agrost. 51. 
Panicum bicolor Moench. Meth. 206. 
Panicum cynosuroides Scop. PI. Carn. Ed. 2, I, 50. 
Panicum humile Thunb. ex Trin. Gram. Panic. 164. 
Panicum imberbe Poir. Encycl. Suppl. IV, 272. 
Panicum laevigatum Lam. FI. Fr. Ill, 578. 
Panicum psilocaulum Steud. Syn. Gram. 50. 
Panicum purpurascens Opiz in Flora V, 266 ; Raddi ex Nees Agrost. 
Bras. 240. 
Panicum quale Linnaei Krock FI. Siles. I, 88. 
Panicum reclinatum Vill. Hist. PI. Dauph. II, 64. 
Panicum tejucense Nees ex Trin. Gram. Panic. 166. 
Panicum virescens Salzm. ex Doell in Mart. FI. Bras. II, II, 157. 
Panicum viride Linn. Syst. Veg. ed. 10, p. 870 ; Anders. Journ. 
Linn. Soc. V, Suppl. p. 39 ; Trin. Sp. Gram. Ic. t. 203. 
Pennisetum viride R. Br. Prodr. 195. 
j English name : — Green Bristle-Grass. 
Description : — An annual ; stems numerous, more or less geniculate, 
branched towards the base, erector ascending, 3-18 inches high. Leaves 
1-6 inches long by J-f inch broad, lively green with a paler midrib, 
with rather distant scabrous ribs and strongly scabrous margins. Ligule 
composed of a tuft of hairs. Panicle ^ to 3 inches long. Bristles £-§ 
inch long. 
The spikelike panicle 1-2 inches long in the typical form, but 
occasionally nearly twice that, the lower spikelets in distinct clusters or 
on short branches, the awniike branches more 'irregular and often 
shorter, the asperities directed upwards. Outer glume acute, about 4 
the length of the spikelet ; second and third glumes nearly equal, 
broad, concave, 5- or 7-nerved. 
Fruiting glumes smooth and shining, the minute transverse wrinkles 
visible only under a lens. 
Locality Aden, in umbris arbuscularum (Anders.). 
Distribution : — Temperate and subtropical regions of the world. 
According to Amphlet and Rea (the Botany of Worcestershire p. 397) 
“ this plant is a native of Manchuria which has become a weed of 
cultivated and waste ground throughout the greater part of the north 
temperate zone/' 
