442 CXLTI. aRAMINE.?E. 



spikelets occasionally prolonged into a flattened hairy-margined 

 cnsifbrm point, 2-3 inches long. (In the Cape species this is 

 only the case in the ]>edicellate spikelet.) Inner glume boat- 

 keeled, not quite as thick as the outer. Flowering glume and 

 palea very membranous and unusually large. Grain free, 

 much shorter than the palea. — Wall, ct Griff, in Journ. As. 

 Soc. Bengal, v. (183G) 2^. 572 ; Griff. Not. p. 71 ; Endl. Gen. 

 PI. p. 1354. 



Tallish grasses, with, in the 2 Cape species, solitai-y spikes more than 6 

 inches long. One {Rotthosllia hordeoides, Mvmro, mss.) found on the Mori 

 river by Burke, the other (Burchell, n. 2200) found by him at Litakun. 



24. HETEROPOGON, Pers. 



Spikelets in pairs along the slender rachis of simple spikes ; 

 one sessile, cylindrical, female ; the other male, shortly pedi- 

 cel led. Lowest glume of the fertile spikelet rigid, convolute, 

 truncate, the next keeled, the third very thin and membranous. 

 Flowering glume reduced to a long, thick, hairy, twisted and 

 flexuous awn. Male spikelets lanceolate, awnless. Grain 

 free, enclosed in the glumes. — Nees, I. c. p. 100 ; Bentli. Fl. 

 Hongh.p. 424. 



3 Cape species, with sohtary or geminate spikes, narrow leaves and 

 slender culms ; H. contortus is common. — The lowest spikelets of the spike 

 are fi'equently all male. 



25. AK-DIIOPOGOW, Linii. 



Spikelets in pairs along the jointed rachis of solitary, gemi- 

 nate, tufted or panicled spikes ; one sessile, fertile ; the other 

 shortly pedicelled, male or reduced to a glume. Outer glume 

 of fertile spikelet rigid, with 2 lateral nerves stronger, the 

 second keeled, the third very thin, transparent. Flowering 

 glume very small and delicate, ending in or reduced to a long 

 twisted aAvn. Grain free. — Nees, I.e. p. 103; Bentli. I.e. p. 

 422; Lepeocercis, Nees, I.e. p. 97. 



Kigid, rather coarse grasses, very various in hahit ; the spikes in some 

 nude, in others enclosed in persistent, spathe-like sheathes. — 16 Cape 

 species. 



In the subgenus ScMzachynum the spikes are sohtary, slender, and al- 

 most cylindrical. The pedicelled spikelet rudimentaiy on a flattened 

 pedicel. 



In the subgenus Lepeocercis the spikelets are quadrifarious, 2 rows of 

 male on one side, and 2 rows of females on the other side of the flattened 

 rachis. All the lower glumes are very blunt, and often toothed at the apex. 



2G. SOUGHUM, Pers. 



Spikelets at the ends of the twigs of a branching panicle, 

 cither fertile, male, or neuter, dissimilar. Outer glumes 2 ; in 



