524 



CONTEIBUTIONS FEOM THE NATIONAL HEEBARITJM. 



105. Panicum. scoparium Lam. 



Fig. 131. — Distribution of P. scoparium. 



Panicum scoparium Lam. EncycL 4: 

 744. 1798; Contr. TJ. S. Nat. Herb. 15: 

 294. 1910. 



DISTRIBUTION. 



Wet places, southeastern United 

 States and Cuba. The type specimen 

 from South Carolina. 



Cuba: Road to Pinal Mayari, 

 Wright 3467. Sierra Nipe, 

 Shafer 2997, 3018. 



106. Panicum viscidellum Scribn. 



Panicum, viscidellum Scribn. U. S. Dept. Agr. Div. Agrost. Circ. 19: 2. 1900; Contr. 

 U. S. Nat. Herb. 15: 296. 1910. 



DISTRIBUTION. 



Open woods and slopes, Mexico to Colombia; also in Cuba. The type sjjecimen 

 from Jalapa. 



Veracruz: Cordoba, Site^oc^ 6425. Onzaha, Amer.Gr. Nat. Herb. 179. Jalapa, 



Hitchcock 6606, 6673, Smith 



1617, Pringle 8089. Mirador, 



Liebmann 323. Zacuapan, 



Purpus 2160. 

 Guatemala: Cobdn, Tilrclcheim 



3836, 3829 in part. Sierra del 



Mico, Kellerman 6231, 6249. 

 Nicaragua: U. S. Pacific Expl. 



Exped. Wright. 

 Costa Rica: Asseri, Tonduz 1244. 



El General, Pittier 3358 . ^<^- 132.-Distribution of P. vhcidellum. 



Panama: El Boquete, Eitchcoch 8178, Pittier 3043. 



Cuba: Managua, Palmer & Riley 1065. 



Colombia: La Esmeralda, near Jamundi, Pittier 940. 



COMMUTATA. 



Blades unsymmetrical and falcate; culms decumbent; first 



glume about one-third as long as the spikelet 107. P. joorii. 



Blades symmetrical, nearly linear; culms erect; first glume 



about half as long as the spikelet 108. P. alboviaculatum. 



107. Panicum joorii Vasey. 



Panicum joorii Vasey, U. S. Dept. Agr. 

 Div. Bot. Bull. 8: 31. 1889; Contr. U. S. Nat. 

 Herb. 16: 308. 1910. 



distribution. 



Damp woods, southeastern United States; 

 also in southern Mexico. The type speci- 

 men from Louisiana. 



Veracruz: Jalapa, Hitchcoch 6650. 

 Republic op Mexico : Without locality, 

 Fig. 133.— Distribution of P. joorii. Pringle 13290. 



