Rottboellia.} CXLIV. GRAMINER. 513 
hyaline, all gg Styles distinet. Grain enclosed in the glumes 
but free from the 
The genus i ga over tata Asia and Africa with at least one American 
species. Of the four Pus tralian ones, two have a wide range in tropical Asia, the 
other two are endem 
er agat ag originally founded du the Yonmges, Jaye on five species 
arated into as n's proposal to restrict 
M he name yá rh R. Geman and allied t aadel ty since added has.now been generally 
dopte 
Stems vids branched, with single spikes of 2 to 3 i 
rticl 
the articles of the spike densely ciliate at the t 
Seesile "spikelet l-flowered, the outer glue silky 
villous . 1. R. formosa. 
Stems usually bran Y Bodaus solitary i in the ‘upper 
sheaths, with a spike of 3 to 6 in., quite glabrous. 
Sessile ipit above 2 lines long, hovered (010,25 GE rakata. 
Stems bran ch ed. Peduncles clustered in the upper sheaths, 
e spikes slender, 3 i 
spikelet under 2 lines long, 1-flower 
Outer glume of the sessile spikelet tuberculate at the cn 
nerves scarce ee winged at the top. Pedicella : 
Spikelet ba . R. muricata. 
Outer g glume of the sessile spikelet ‘smooth, the 2 nerves 
tinctl ged at the . Pedicellate spikelet im 
often tur e : " UE top e eus P . 4. R. ophiuroides. 
L R, » R: Pr.- Prod. 20 200— Apparent annual, Stems 
scarcely erer above 1 ft. long. Leaves arrow, more or less hir- 
sute with spre eadi ng hairs. | Peduncles solitary i pper axils, 
article crowned by a ring of dense, often purplish hairs. Oute 
iilis of the fertile spikelet broad one d and obtuse, but densely 
t the prb "minute or deficient. Barren 
Spikelets sessile, of a single ovate or lanceolate 3- or ae 
glabrous glume, with ‘Sometimes a secon nd smaller one in its 
Kunth, Revis. Gram. i. t. 91. 
N. Australia, Islands of the North Coast, R. Brown ; le Creek, Upper 
Victoria River, F. Mueller ; North Coast of Arnhem's Land, M Kinl 
6to 10 i perum longand shoe iie seabrous, the. hs more or 
less hispid sre solitary in the upper sheaths. Spikes often 
above 6 in long cylindrical, 2 lines diameter when old u 
u 
slightly convex, den 2 lines long, coriaceous and smooth but scum 
many nerves more visible pret than out; 2nd glume acute, deeply 
VOL. vir, 2r 
