64 THE TRUE GRASSES. 



covering wide-extending plains and mountain slopes in 

 Australia and South Africa. 



34. (97 ) Germainea Balansa & Poitrass. Inflorescence 

 terminal, clustered, consisting of three central ? , loiig- 

 awned, one-flowered spikelets, and of 6-9 $ , awnless, 

 two-flowered ones. 



Species one (G. capitata Bal. & Poitr.), from Saigon 

 to South China and the Khasiya Mts. 



35. (97 ) Iseilema Anderss. Like Themeda, but more 

 delicate. (For characters, see Key.) 



Species three, in India, one in Australia. (I. Wrightii 

 Anderss. has a scent like bedbugs.) 



36. (59) Cleistachne Benth. Resembling Sorghum in 

 its habit and the hard empty glume, but without lateral 



$ spikelets or their pedicels. Awns of the fertile glume 

 terminal, stout. 



Species two, one in the East Indies, one in tropical 

 Africa. 



TRIBE III. ZOYSIEJE. 



Spikelets solitary or in groups, usually one-flowered, 

 the flowering glume always awnless, membranaceous ; 

 the empty glumes of firmer texture and frequently awned. 

 Rachis continuous. Otherwise as in Andropogonece. 

 A. Spikelets in groups of from three to several at each joint 



of the main axis ; each group fatting off entire. 



a. Spikes in pairs, articulate ; spikelets 7-8 together. 



37. Trachys. 



b. Spikes or racemes solitary, continuous, terminat- 

 ing the culm or its branches. 



a. Spikelets 3-4 together, each group surrounded 

 by an indurated, pitcher-shaped pseudo-invo- 

 lucre formed by the first empty glume of each 



spikelet 38. Anthephora. 



ft. Groups of spikelets without an involucre. 



I. Uppermost spikelet of each group sterile. 

 Second empty glume coriaceous, with 

 hooked spines on the back. . 41. Tragus. 

 II. Lowest spikelet of each group sterile, 

 terminal one fertile, one-flowered with 

 delicate glumes 40. JEgopogon 





