DESCRIPTIONS OF TRIBES AND GENERA. 



205 



sea level, which is only here and there interrupted by 

 lava streams. 



299. (286) Bambusa Schreb. (Bambos Retz, Ischuro- 

 chloa Biise). Spikelets with 2-6 empty glumes gradually 

 increasing in size and becoming like the flowering glumes, 



Fig. 108.— Leafy twig of Bambusa arundinacea Retz. B, C, pieces of Tabasheer. 



which are coriaceo-chartaceous, awnless, or with short 

 mucronate points. The two- to many-flowered spikelets 

 are frequently polygamous, especially the upper ones, 

 and the lowest is often $ or empty. Ovary hairy ; styles 

 2-3, more or less grown together at the base ; caryop- 

 sis elongated-linear, smooth or slightly furrowed on the 

 inside. 



