514 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



DISTRIBUTION. 



Open moist woods and savannas, Florida and the Greater Antilles. The type 

 specimen from Florida. 



Cuba: Sierra Nipe near Woodfred, 

 Shafer 3083. Herradura, Hitch- 

 cock 115. Isle of Pines, Palmer 

 & Pdley 990. Without locality, 

 Wright 3875 in part. 



Jamaica: Hills back of Barican, 

 Hitchcock 9561. Bull Head 

 Mountain, Hitchcock 9550. 



Porto Rico: Aguada, Sintenis 

 FIG. I05.-Distribution of P. polycaulon. 5724. Monte Mesa, Chase 6276. 



Trujillo Alto, Chase 6767. Campo Alegre, Cha^e 6621. 



80. Panicum strigosum Muhl. 



Panicum strigosum Muhl. in Ell. Bot. S. C. & Ga. 1: 126. 1816; Contr. U. S. Nat, 

 Herb. 15: 164. 1910. 



distribution. 



Sandy woods and open moist ground, southeastern United States to Colombia and 

 in the Greater Antilles. Type specimen from South Carolina or Georgia. 



Veracruz: MinatitMn, Smith 555. 

 Guatemala : Road from Gualan to 



Copdn, Pittier 1800. Secan- 



quim, Pittier 257. 

 Costa Rica: Between De Can- 



delaria and San Cristobal, 



Jimenez 459. 

 Cuba: El Guajna, Palmar <& Riley 



213. Without locality, Wright 



3875 in part. 

 Jamaica: Bull Head Mountain, Hitchcock 9551. 

 Santo Domingo: Without locality, Eggers 2045 (K. U. Herb.). 

 Colombia: Santa Marta, Sm\th 163. 



* ' ANGUSTIFOLIA. 



Nodes bearded; plants grayish- villous; autumnal blades flat, 



rather soft 82 . P. chi-ysopsidifolium. 



Nodes not bearded; plants villous only at base, or nearly 

 glabrous; autumnal blades involute. 



Spikelets 3 to 3.5 mm. long, pointed 83. P. fusiforme. 



Spikelets less than 3 mm. long, not pointed or obscurely so. 



Plants glabrous or nearly so; autumnal culms erect. 



Spikelets subsecund along the suberect panicle 



branches 86. P. neuranthum. 



Spikelets not subsecund; panicle loose and open. 85. P. ovinum. 

 Plants pubescent, at least on the lower half. 



Spikelets about 2.4 mm., rarely only 2.1 mm., 

 long; vernal blades 7 to 12 cm. long; 



autumnal blades not falcate 84. P. arenicoloides. 



Spikelets not over 2 mm. long; vernal blades 4 

 to 6 cm. long; autumnal blades much 

 crowded, falcate 81. P. aciculare. 



Fig. 106. — Distribution of P. strigosum. 



