HITCHCOCK AND CHASE—TROPICAL NORTH AMERICAN PANICUM. 481 
Jamaica: Ewarton to Linstead, Hitchcock 9463. 
Santo Domineo: Without locality, Wright, Parry & Brummel 627. Azua, Rose, 
Fitch & Russell 4410. 
Porto Rico: Quebradillas, Chase 6567, 6577. Joyuda, Chase 6308. 
DanisH West Inprzs: St. Thomas, Hggers in 1882. 
LEEWARD Istanps: Antigua, Wullschlaegel 64. Guadeloupe, Duss 3177, 3181 
(K. U. Herb.). St. Bartholomew, Goés (K. U. Herb.). 
Winpwarp Istanps: Martinique, Duss 536, Hahn 1232. 
30. Panicum hallii Vasey. 
Panicum hallii Vasey, Bull. Torrey Club 11: 64. 1884; Contr. U. 8. Nat. Herb. 15: 
‘7A. 1910. 
DISTRIBUTION. 
Dry prairie, rocky and gravelly hiils and canyons, and in irrigated fields, Texas to 
Arizona and south to central Mexico. The 
type specimen from Texas. 
CHIHUAHUA: Santa Eulalia Mountains, 
Pringle 376. 
Duraneo: Without locality, Palmer 
* 525 in 1896. 
Coanuma: Monclova, Palmer 1338 in 
1880. Saltillo, Hitchcock 5605. 
Nuevo Leon: Monterrey, Hitchcock 
5537. 
TamAuuLiPas: Victoria, Palmer 554 in 
1907. Fie. 43.—Distribution of P. hallii. 
Sawn Luis Porost: Las Canoas, Hitchcock 5756. Cardenas, Hitchcock 57194. 
31. Panicum lepidulum Hitche. & Chase. 
Panicum lepidulum Hitche. & Chase, Contr. U. 8. Nat. Herb. 15: 75. 1910. 
DISTRIBUTION. 
Rocky hills and moist banks, Mexico to Panama. The type specimen from 
Chihuahua. 
CurnuAHUA: Chihuahua, Pringle 497. 
Durango: Durango, Palmer 525 in 1896, Hitchcock 7591. Tobar, Palmer 533 in 1906. 
Zacatecas: Zacatecas, Hitchcock 
7510. 
San Luis Porosi: Cardenas, Hitch- 
cock 5719. 
Jatisco: San Nicolas, Hitchcock 7199. 
Zapotlin, Hitchcock 7238. 
QUERETARO: SanJuan del Rio, Rose, 
Painter & Rose 9555. 
Mzxico: Pedregal, Federal District, 
Amer. Gr. Nat. Herb. 35. 
Puersio: Tehuacin, Mitchcock 6063. 
GUATEMALA: Guatemala City, Hitchcock 9014. 
Panama: Sabano de Juan Corso, Pittier 4526. 
82472°—15 3 
Fig. 44.—Distribution of P. lepidulum. 
