646 



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



Figure 923. — Panicum aciculare. Plant, X 1; two views of spikelet, and floret, X 10. (Vernal phase, Chase 



7148, N. C; autumnal phase, Hitchcock 317, N. C.) 



mm. wide; panicle 3 to 7 cm. long, 

 the flexuous branches spreading at 

 maturity; spikelets 1.9 to 2 mm. 

 long, obovate. Autumnal phase bushy 

 branching, the culms 10 to 30 cm. 

 long, spreading, forming dense cush- 

 ions, the blades involute, sharp- 

 pointed, usually arcuate, mostly 1 to 

 3 cm. long. % — Sandy pine Avoods 

 Coastal Plain, New Jersey; Virginia 

 to northern Florida, Arkansas, Okla- 

 homa, and Texas; West Indies, north- 

 ern South America. 



ascending, 8 to 15 cm. long (the 

 lower shorter), 4 to 7 mm. wide, 

 acuminate; panicle short-exserted, 5 

 to 7 cm. long, the flexuous branches 

 loosely ascending; spikelets 2 mm. 

 long, obovate-ellipsoid, papillose- 

 villous. Autumnal phase stiffly as- 

 cending, sparingly branching at the 

 middle and upper nodes, the branches 

 and numerous flat reduced blades nar- 

 rowly ascending, the blades mostly 

 4 to 5 cm. long. % — Known only 

 from dry sandy savannalike park 



Figure 924. — Panicum bennettense. Two views of 

 spikelet, and floret, X 10. (Duplicate type.) 



Figure 925. — Panicum chrysopsidifolium. Two view; 

 of spikelet, and floret, X 10. (Type.) 



15. Panicum bennettense M. V. 



Brown. (Fig. 924.) Vernal culms 

 erect, 30 to 70 cm. tall, obscurely 

 appressed-puberulent ; lower sheaths 

 sparsely papillose-pubescent; blades 



surrounding Bennett Civil War Me- 

 morial, near Durham, N. C. 



16. Panicum chrysopsidifolium 



Nash. (Fig. 925.) Vernal culms as- 

 cending or spreading, 30 to 45 cm. 



