250 LEGUMINOSZA. 
_ 1. Petalostemon exile, A. Gray, Pl. Wright. ii. p. 41. 
New Mexico.—Norta Mexico, Santa Cruz, Sonora (Thurber). 
2. Petalostemon candidum, Michx. Fl. Bor.-Am. ii. p. 49, t. 37. fig. 1. 
New Mexico.—Norts Mexico, Rio de Santa Cruz and Prodrero, Sonora (Schott). 
12. INDIGOFERA. 
Indigofera, Linn. Gen. Plant. n. 889; Benth. et Hook. Gen. Plant. i. p. 494. 
A vast genus of herbaceous and shrubby plants, comprising about 250 species, gene- 
rally dispersed in tropical and subtropical regions, and especially numerous in Tropical 
and South Africa. Upwards of 100 species have already been collected in Tropical 
Africa. 
1. Indigofera acutifolia, Schl. in Linnma, xii. p. 282. 
Soura Mexico, Aguas Calientes, near Grande (Ehrenberg). 
2. Indigofera anil, Linn. Mant. p. 292. 
Sout Mexico, San Blas to Tepic (Coulter), Regla (Ehrenberg), Hacienda de la Laguna 
(Schiede), valley of Cordova (Bourgeau, 1625); Nicaragua, neighbourhood of Granada 
(Levy), Graytown (Tate, 341); Costa Rica, Aguacate (Girsted) ; Panama, Chagres 
(Fendler, 101; Seemann).—Widely dispersed in TRopicaL AMERICA, where it is believed 
to be indigenous, and naturalized in many parts of Tropical Arrica and ASIA. 
Var. 6. polyphylla, DC. Prodr. ii. p. 225; Calques des Dess. Fl. Mex. 264. “An 
sp. propria?” — 
_ Sovrn Mexico, Zacuapan and Mirador (Galeotti, 3274 and 3334). 
8. Indigofera coronilloides, Mart. et Gal. in Bull. Acad. Brux. x. pars 2, 
p. 40. 
SoutH Mexico, Misteca Alta, Oaxaca, 7000 feet (Galeotti, 3234), Cuicatlan, 2000 feet 
(Galeotti, 3242). Hb. Paris. 
4. Indigofera costa-ricensis, Benth. in Vidensk. Meddel. 1853, p. 5. 
Costa Rica, San José (rsted). 
5. Indigofera densiflora, Mart. et Gal. in Bull. Acad. Brux. x. pars 2, p. 44. 
SoutH Mexico, mountains of Oaxaca, at 8500 feet (Galeotti, 3201), Michoacan 
(Galeotti, 3389), and woods near the Pacific (Galeotti, 3172), Real del Monte (Coulter). 
Hb. Kew. © 
6. Indigofera domingensis, Spreng., DC. Prodr. ii. p. 227. 
_ Indigofera microcarpa, Desv. 
SoutH Mexico, forests on the banks of streams on the western Cordillera of Oaxaca, 
from 5000 to 6000 feet (Galeotti, 3202); Centra, Amurica, west side (Crsted).—In 
TrRopicaL AMERICA to Sourn Brazit. Hb. Kew. 
