152 NORTH AMERICAN FLORA [Volume 24 



rather densely many -flowered; calyx scarcely more than 1 mm. long, darkly ferruginous; 

 corolla 5 mm. long, densely and darkly ferruginous strigose without; pod oblong, slightly 

 curved, abruptly acute, 6-9 mm. long, 2.5 mm. broad, 2- or 3-seeded, terete; seeds 2 mm. 

 thick. 



Type locality: Between Mesquitec and Monte Escobado, Jalisco. 



Distribution: Durango to Jalisco and Zacatecas. 



45. Indigofera caroliniana Mill. Gard. Diet. ed. 8. 

 Indigofera no 3. Mr 1768. 



Indigofera disprrma L. Syst. Nat. ed. 12. 3: 232. S 1768. 



A shrub 0.5-2 m. high, widely branching; branches terete, often reddish, slender, minutely 

 strigose ; stipules subulate-setaceous, 2 mm. long; leaves spreading, 5-10 cm. long; rachis and 

 petiole minutely strigose; leaflets 9-13, obovatc or oblanceolate, rounded or obtuse and mucron- 

 ate at the apex, acute at the base, 1-2.5 cm. long, 5-10 mm. wide, finely strigose on both sides, 

 thin, slightly paler beneath, petioluled; racemes usually surpassing the leaves; calyx 1.5 mm. 

 long; corolla 5-6 mm. long, yellowish-brown; banner broadly oblanceolate; pod somewhat 

 flattened, with strong sutures, oval in outline, 7-10 mm. long, 3 mm. wide, 2-3-seeded; 

 seeds rounded, somewhat compressed, about 2.5 mm. long, nearly 2 mm. broad. 



Type locality: Carolina. 



Distribution: North Carolina to i'Morida and Louisiana. 



Illustration: Ehret, Trew Jfc Vogel, PI. Sel. pi. 55. 



46. Indigofera tumidula Rose, Contr U. S Nat 

 Herb. 12: 273. 1909. 



A shrub, 6 mm. high or more; branches angled, minutely strigose; stipules subulate, 1-2 

 mm. long; leaves 10-15 cm. long; leaflets 3-9, oblong to oval, 3-4 cm. long, rounded at the base 

 and apex, mucronate, sparingly strigose on both sides, paler beneath; racemes 7-12 cm. long; 

 calyx 2 mm. long, strigose; corolla not seen; pod 4-5 mm. long, turgid, appressed-pubescent, 

 2-seeded. 



Type locality: Iguala Canon, Guerrero. 



Distribution: Known only from the type locality. 



47. Indigofera jaliscensis Rose. Contr, U. S. Nat. 

 Herb. 8: 310. 1905. 



Shrubby below, the ■branches angled, grooved, densely strigose; stipules setaceous, 4-6 mm. 

 long; leaves spreading, 5-10 cm. long; rachis and petiole strigose, grooved above; leaflets 1 1-21, 

 oblong, or the terminal ones obovate, rounded or obtuse at each end, strigose on both sides, 

 8-20 mm. long; racemes 1-2 dm. long, usually exceeding the leaves; calyx 1.5 mm. long, 

 ferruginous-strigose; corolla not known; pod ovoid, acute, 3 mm. long, 2 mm. thick, 1-seeded; 

 seed globose, 1.5 mm. thick. 



Type locality: Rio Blanco, Jalisco. 



Distribution; Jalisco and Morelos. 



48. Indigofera sphaerocarpa A Gray, PI. Wright. 2: 



37. 1853. 



A shrub, 6-12 dm. high; branches angled, more or less ferruginous-dotted or streaked; 

 stipules subulate, 1-2 mm. long; leaves 5-10 cm. long; rachis and petiole ferruginous-strigose; 

 leaflets 13-17, oblong, rounded and mucronate at the apex, acute at the base, 1-2 cm. long, 

 3-7 mm. wide, glabrous above, strigose beneath; racemes equaling or longer than the leaves; 

 calyx 1.5 mm. long, ferruginous-strigose; corolla 6-7 mm. long, ferruginous-strigose without; 

 pod rounded-ovoid or subglobose, 3-3.5 mm. long, 2.5 mm. thick, 1-seeded; seed globose, 2 

 mm. thick. 



Type locality: Santa Cruz, Sonora. 



Distribution: Arizona, Sonora, and Chihuahua. 



