2 
is, however, a more robust plant and also differs in the pepere 
of larger — with the lower glume very sharply wrinkled up to 
the broadly triangular more conspicuously ciliolate tip and with mostly 
2-aristulate peat cels. I have followed K. Schumann in accepting 
Schweinfurth’s No. 2485 (the original of Hackel’s R. triseta) as identical 
with Steudel’s Lepturopsis triaristata, but I have not seen the original 
of the latter and am somewhat doubtful as to the correctness of 
with extravaginal innovations. I have not been able to find such 
or to see traces of a rhizome in the Kew specimen of Schweinfurth’s 
plant, which is merely a densely tufted annual. 
R. gracilis and R. triaristata are the only annual species of the 
genus, the others being typically caespitose perennials with closely 
pa ake aad , long, persisting basal sheaths and wiry culms.— 
O. Sta 
Fig. 1, a portion of a spike ; 2, sessile erg with the lower glume removed 
. the glume-like pedicel on the left; 3, lower glume of sessile spikelet ; 
4, 5 floret of eon spikelet, All enlarg 
