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MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



smooth and shining. % — Open tall; blades elongate, 5 to 10 mm. 

 slopes and savannas, southern Flor- wide, scabrous; panicle dense, some- 

 ida; tropical America. what flexuous, 10 to 20 cm. long; 



3. Pennisetum nervosum (Nees) fascicles spreading to reflexed ; bristles 

 Trin. (Fig. 1111.) Perennial; culms scabrous, the outer about as long as 

 robust, branching, as much as 3 m. the spikelet, the inner about 10 mm. 



long; spikelet solitary, 5 to 6 mm. 

 long. % — Moist open or brushy 

 places, Brownsville, Tex., along the 

 Rio Grande; apparently introduced; 

 Ecuador to Brazil and Argentina. 



4. Pennisetum villosum R. Br. 

 Feathertop. (Fig. 1112.) Perennial; 

 culms tufted, 30 to 60 cm. tall, pubes- 

 cent below the panicle; blades 3 to 

 5 mm. wide; panicle tawny, ovoid or 

 oblong, 3 to 10 cm. long, 1 to 5 cm. 

 wide including bristles, dense, feath- 

 ery; spikelets 1 to 4 in a fascicle; 

 fascicles short-peduncled, a tuft of 

 white hairs at base of peduncle; 

 bristles numerous, spreading, the 

 inner very plumose, the longer 4 to 

 5 cm. long. % (P. longistylum of 



Figure 1109. — Pennisetum glaucum. Panicle, X H; two views of spikelet, and grain, X 10. (McCarthy, N. C.) 



