HITCHCOCK AND CHASE—TROPICAL NORTH AMERICAN PANICUM. 497 
GUATEMALA: Coban, Tiirckheim 1254. 
Panama: Along ditch to Old Panama, Hitchcock 8400. 
Cusa: Sancti Spiritus, Leén 909. Isle of Pines, Curtiss 464. Bafios San Vicente, 
Britton & Gager 7452. 
54. Panicum laxum Swartz. 
Panicum lacum Swartz, Prodr. Veg. Ind. Occ. 23. 1788; Contr. U. 8. Nat. Herb. 
15: 115. 1910. 
DISTRIBUTION. 
Ditches, banks, moist woods and wet savannas, Mexico and West Indies to Paraguay. 
The type specimen from Jamaica. 
SrmvaLoa: Culiacdn, Palmer 1558 in 1891. 
Veracruz: Coatepec, Hitchcock 6665. Jalapa, Hitchcock 6624. Cérdoba, Hitch- 
cock 6421, 6433. Veracruz, Hitchcock 6583. Sanborn, Orcutt 3238. Mirador, 
Inebmann 412. Orizaba, Botteri 688. 
Tapasco: Mayito, Rovirosa 427. 
British Honpuras: Manatee Lagoon, Peck 60 (Gray Herb.). 
GuaTEMALA: Puerto Barrios, Pittier 361, Hitchcock 9160. Cubilquitz, Tiirek- 
heim 8803. Santa Rosa, Heyde & Lux 3900. Coban, Tiirckheim 3832. 
Honpuras: San Pedro Sula, Thieme 5587. 
Satvapor: Sonsonate, Hitchcock 8971. 
NicaraGua: Corinto, Hitchcock 8748. 
Costa Rica: Buenos Aires, Tonduz 4864, 4868, 4871, Pittier 3657. Rio Birrfs, 
Pittier 3117. Turrialba, Ton- 
duz 8267, Pittier 16123. Rio 
Grande de Térraba, Tonduz 
3622. Boruca, Tonduz 4473. 
Carrillo, Biolley 3107. Port 
Limon, Hitchcock 8429. San 
José, Hitchcock 8455. Rio 
Maravilla, Alajuela, Jiménez 
141. Puntarenas, Hitchcock 
8566. Rio Bebedero, Jimé- 
Noel Rio Tilirf, Tonduz Fie. 75.—Distribution of P. larum. 
Panama: Gatun, Hitchcock 7968, 8027. Boca del Toro, Hart 86. Porto Bello, 
Pittier 2443. Culebra, Hitchcock 7900. David, Hitchcock 8346, 8350. Chepo, 
Pittier 4615. Vicinity of Ola, Pittier in 1911. Gamboa, Pittier 4789. Along 
Sambt' River, Pittier 5234. Chorrera, Hitchcock 8134. Between Pedro 
Miguel and Corozal, Hitchcock 7993. Dolega, Hitchcock 8334. 
Cuba: Sancti Spiritus, Leén 907, Sergius 2781, Péppig 6. Handbana, Wright 
189, 196, 197. Isle of Pines, Taylor 37, Palmer & Riley 1069. Herradura, 
Caldwell & Baker 7136, Tracy 9054, 9062, 9072, 9099, Hitchcock 177. Santiago 
de las Vegas, Hitchcock 178, Tracy 9114. Banao Hills, Leén 39824. Guana- 
bacoa, Leén 914. Wajay, Earle & Wilson 343. Zaza del Sur, Sergius 2780. 
Camaguey, Shafer 217. Sumidero, Shafer 13724. Los Palacios, Shafer 
11793, La Gloria, Shafer 174. Without locality, Wright 759, 3451, 3863. 
Jamaica: Bull Head Mountain, Hitchcock 9539, 9545. Castleton Gardens, Hitch- 
cock 9397. Ewarton to Linstead, Hitchcock 9461. Appleton, Hitchcock 9658. 
Gordon Town, Hitchcock 9333. Troy, Hitchcock 9786. Castleton, Harris 
11285. Below Flamstead, Harris 11466. 
Santo Domrineo: Jarabacoa, Eggers 2120. 
82472°—15——4 
