HITCHCOCK AND CHASE TROPICAL NORTH AMERICAN PANICUM. 485 



Fig. 49.— Distribution of P. bulbosum. 



36. Panicum bulbosum H. B. K. 



Panimm bulbosum H. B. K. Nov. Gen. & Sp. 1: 99. 1816; Contr. U. S. Nat. Herb. 

 15: 81. 1910. 



DISTRIBUTION. 



Moist places in canyons and valleys, southwestern United States to soutliern Mexico. 

 The type specimen from central Mexico. 



Chihuahua: Candelaria, Stearns 266. Chiliualiua, Pringle 377. Colonia Garcia, 

 Nelson '6187, Townsend & Barber 221. Sierra Madre, Nelson 6301. Mount 

 Mohiaora, Nelson 4901. Caiion de San Diego, Hartman 790. 



DuRANGo: Otinapa, Palmer 340 in 1906. Durango, Palmer 525a in 1896. With- 

 out locality, Palmer 741 in 1896. 



Tepic: Between Aguacate and Dolores, 

 Rose 3361. Between Pedro Paulo 

 and San Blasito, Rose 1999. 



San Luis Potosi: San Luis Potosi, 

 Pairy & Palmer 958. Las Canoas, 

 Hitchcock 5754. 



Jalisco : Road between Mexquitic and 

 Monte Escobedo, Rose 2609. Ne- 

 vada de Colima, Hitchcock 7150. 

 Rio Blanco, Palmer 207 in 1886. 



Michoacan: Morelia, Arsene in 1909. 



Mexico: Federal District, Ormif 3518, 



Hitchcock 5932, 5941, 7835, Amer. Gr. Nat. Herb. 39, Holway 12, Bourgeau 

 235, Rose & Painter 9249, Pringle 9575, 6418. Valley of Toluca, Pringle 5207. 



Puebla: Chinantla, Liebmann 441, 442. Cerro de Baxtla, Purpus 2908. Espe- 

 ranza, Beaton 317. Bords de I'Atoyac, Nicolas in 1909. 



Veracruz: Borrego, Bourgeau 2754. Orizaba, Hitchcock 6384. 



Oaxaca: Oaxaca, Nelson 1374. Cerro de San Felipe, Conzatti & Gonzdlez 243. 



36a. Panicum bulbosum sciaphilum (Rupr.) Hitchc. & Chase. 



Panicum bulbosum sciaphilum. (Rupr.) Hitchc. & Chase, Contr. U. S. Nat. Herb. 

 15: 83. 1910. 



distribution. 



Gravelly river banks, south westernUnited 

 States to central Mexico. The type spec- 

 imen from central Mexico. 



Sonora: Nogales to Cocospora Ranch, 



Griffiths 6785J. 

 Chihuahua: Cusihuiriachic, Pringle 

 1406. Sierra Madre, Nelson 6298. 

 Sdnchez, Hitchcock 7666. 

 Durango: Tejamen,PaZmer469 in 1906. 

 Otinapa, Palmer 348, 349, and 554 

 in 1906. Santiago Papasquiaro, Palmer 467 in 1896. Iron Mountain, Hitch- 

 cock 7634. 

 Tepic: Between Dolores and Santa Gertrudis, Rose 2053. 

 Miiixico: Barranca de Rio Aqueducto, Rose & Painter 8634. 



Fig. 50 



-Distribution of P. bulbosum 

 sciaphilum. 



