HITCHCOCK AND CHASE TROPICAL NORTH AMERICAN PANICUM. 523 



DISTRIBUTION. 



Moist sandy woods, southeastern United States, Cuba and Porto Rico. 



Cuba: Without locality, Wright 



3876. 

 Porto Rico: Martin Pefia, Chase 



6357. Between Catano and 



Guainabo, Chase 6631. Lake 



Loisa, Chase 6783. Santurce, 



Heller 982b, 6442. Vega Baja, 



Heller 639, Underwood & 



Griggs 955. Campo Alegre, 



Chase 6434 . Fig. 128.— Distribution of P. portorkcnse. 



103. Panicum lanceariura Trin. 



Panicum lancearium Trin. Gram. Pan. 223. 1826; Contr. U. S. Nat. Herb. 15: 273. 

 1910. 



DISTRIBUTION. 



Sandy pine woods, southeastern 

 United States, British Honduras, 

 Cuba, and Santo Domingo. The type 

 specimen from North America, the 

 exact locality not known. 



British Honduras: Sibune 

 River, Peek 425 (Gray Herb.). 



Cuba: San Juan de Buenavista, 

 Wright 3460 (Gray Herb.). 



Fig. 129. — Distribution of P. lancearium. 



Santo Domingo: Constanza, Tiirckheim o321. 



PEDICELLATA. 

 104. Panicum nodatum Hitchc. & Chase. 



Panicum nodatum Hitchc. & Chase, 

 Contr. U. S. Nat. Herb. 15: 293. 1910. 



distribution . 



Oak woods and wooded sand dunes, along 

 the coast of Texas and adjoining Mexico. 

 The type specimen from Texas. 



Mexico: Matamoros, Berlandier988, 2418 

 (Gray Herb.). 



SCOPAIilA 



Fig. 130.— Distribution of P. nodatum. 



Vernal culms erect or ascending; plants velvety throughout; 



spikelete about 2.5 mm. long 105. P. scoparium. 



Vernal culms decumbent at base; upper sheaths more or less 



glabrate; 'spikeleta less than 2 mm. long 106. P. viscidellum. 



