HITCHCOCK AND CHASE—TROPICAL NORTH AMERICAN PANICUM. 511 . 
Cuararas: Turubula, Nelson 3357. 
Costa Rica: Helechales del General, Pittier 12002. Cafias Gordas, Pittier 11017. 
Cabagra, Tonduz 6547. Rio Birris, Pitiier 3118. 
Cugpa: Loma Pelada, Wright 757. La Perla, Leén 3790. Banao Hills, Leén 
3998. Gran Piedra, Shafer 9014. Without locality, Linden 2143. 
Jamaica: Gordon Town, Hart 792, Hitchcock $321. Troy, Maron 2816, Hitchcock 
9785. Abbey Green, Hitchcock 9370. Cinchona, Hitchcock 9708, Harris 
11264, 11440, 11508. Ewarton, Hitchcock 9451. Ipswich, Hitchcock 9627. 
Newport, Britton 3193. Road to Salt Hill, Harris 11395. Without locality, 
Wullschlaegel 1163. 
Hartt: Kenskoff, Buch 956. 
Santo Domineo: Picarda 620 (K. U. Herb.). 
Porto Rico: Sierra de Yabucoa, Sinfenis 2609, Mayaguez, Sintenis 357. Alto de 
Bandera, Chase 6469. Maricao, Chase 6199, 6250. 
VENEZUELA: Caracas, Pitter 5910. 
76. Panicum rudgei Roem. & Schult.! 
Panicum rudgei Roem. & Schult. Syst. Veg. 2: 444. 1817; Contr. U. 8S. Nat. Herb. 
15: 139. 1910. 
DISTRIBUTION. 
Savannas, Jamaica and British Hon- 
duras to Brazil. The type specimen 
from British Guiana. 
British Honpuras: Monkey 
River, Peck 588 (Gray Herb.). 
Costa Rica: Buenos Aires, Pit- 
tier 10576, Tonduz 3679, 4875. EG. 102.—Distribution of P. rudgei. 
Los Palmares, Pittier 10588. 
Helechales del General, Pittier 12064. 
Jamaica: Bunkers Hill Savanna, Harris 11170. 
TrinipaD: Pitch Lake, Amer. Gr. Nat. Herb. 75. St. Joseph, Hitchcock 10181. 
Without locality, Crueger. a © 
hide Panicum{ megiston Schult. 
Panicum megiston Schult. Mant. 2: 248. 1824: Contr. U. §. Nat. Herb. 15: 141. 1910. 
DISTRIBUTION. 
Swamps, Mexico and Cuba to Para- 
guay. The type specimen from Brit- 
ish Guiana. 
Tapasco: San Juan Bautista, Ro- 
ViITOsa 532. 
Costa Rica: Guanacaste, Jiménez 
727. 
PanaMA: Empire, Pittier 3726. 
Bohio, Amer.Gr. Nat. Herb. 76. 
Vic. 103.—Distribution of P. megiston. 
Cusa: Santa Cruz de los Pifios, Wright 3872. 
TrinipAp: Caronf Savanna, Hart 4197. Without locality, Crueger. 
VENEZUELA: Santa Catalina, Rusby & Squires 355. 
‘The South American species described as Panicum rotundum Hitche. & Chase 
(Contr. U. 8. Nat. Herb. 15: 139. 1910) proves to be the same as Panicum campestre 
Nees (Trin. Gram. Pan. 197. 1826). 
