56 THE TRUE GRASSES 



Species six, in East Indies. 



26. (80) Apocopis Nees (Amblyachyrum Hoehst. ). 

 Racemes in pairs (often having the appearance of being 

 single). Spikelets crowded, the lowest sessile, £ , awn- 

 less, the upper $ , awned. Stamens two. Delicate, low 

 grasses. 



Species three or four, in East India, China, and the 

 islands of the Malayan Archipelago. 



27. Lophopogon Hack. Spikes in pairs, appressed to- 

 gether, clothed with shining, rusty-brown hairs ; spikelets 

 crowded. (Characters in the key.) A low, delicate 

 grass with narrow leaves. 



Species one (L. triderdatus Hack.), in western India. 



28. (98) Apluda L. Racemes minute, enclosed in the 

 sheaths, fascicled ; fascicles in false panicles interspersed 

 with numerous leaves. Callus of the sessile spikelets 

 spherical, both the other spikelets (one $ and one rudi- 

 mentary) upon broad, Hat pedicels. 



Species one (A. varia Hack.), with many varieties 

 (spikelets awned or awnless), in East Indies, China, and 

 Australia. 



5 Sub-tiubk Euandropogoneae. 



29. (92) Trachypogon Nees. The long, pedicellate 

 spikelet of every pair £ , with a long stout awn ; the 6 

 spikelet subsessile, awnless. Racemes solitary or two 

 or three together, often clothed with silky hairs. 



Species one (T. poly morpkus Hack.), in tropical and 

 subtropical America, Southern Africa, and Madagascar. 



30. (83) Elionurus Humb. & Bonpl. Axis of the soli- 

 tary raceme obliquely articulate, densely hairy. First 

 empty glume bind or two-lobed, fringed ; spikelets with 

 a strong balsam-like odor when fresh or after soaking in 

 water, and burning the tongue when chewed. [Two 

 species within the limits of the United States, viz., E. 

 tripsacoides H.B.K. (BottbceUia ciliata Nutt.) and E. bar- 

 UcuHmis Hack. (Wright, No. 2106).] 



Species fifteen, mostly in tropical and subtropical 

 America, some in Africa, western India, and Aus- 

 tralia. Savanna grasses, rejected by cattle. (The 



