150 NORTH AMERICAN FLORA IVolume 24 



densely .strigose and somewhat glandular-hispid, especially at the bases "I the leaflets; leaf- 

 lets 7-11, elliptic, rounded or obtuse and mucronate at the apex, acutish at the base, 8-15 

 mm. long, densely silvery-strigose on both sides; racemes 8-12 cm. long, strict, longer than the 

 leaves; calyx 2 mm. long; corolla unknown; pod 3-4 cm. long, 2.5-3 mm. wide, slightly arcuate, 

 8-10-seeded; seeds 2 mm. long, 1.5 mm. thick. 



Type locality: San Jose del Cabo, Lower California. 



Distribution: Lower California; apparently also at Guaymas, Sonora. 



37. Indigofera Nelsonii Rydberg, sp. nov. 



A low shrub; branches terete, grayish-strigose and slightly glandular; stipules subulate, 

 3 mm. long; leaves 3-5 cm. long; rachis ami petiole strigose-canescent; leaflets 9-11, oval 

 or elliptic, 1-1.5 cm. long, rounded at both ends, mucronate at the apex, strigose-canescent 

 on both sides; racemes about 3 cm. long, strigose and glandular-hispidulous; pod about 3 

 cm. long, 4-5 mm. wide, densely strigose. abruptly acute at each end, the sutures prominent, 

 the valves somewhat carinate but the ridge rounded; seeds not seen but probably not flat 

 as in /. plalycarpa. 



Type collected between La Laguna and El Taraiso, Lower California, January 29, 1906, Nelson 

 &■ Goldman 7472 ll'. S. Nat. Herb. no. 505541). 



38. Indigofera Palmeri S. Wats. Proc. Am. Acad. 22: 404. 

 1887. 



A shrub, 1-2 m. high, branches terete, subtomentose with short loose pubescence; stipules 

 subulate, minute; leaves spreading, 4-6 cm. long; leaflets 7-11, elliptic, acute or obtuse and 

 mucronate at the apex, acute at the base, 1-2 cm. long, rather firm, green and finely strigose 

 above, pale and more coarsely and somewhat loosely hairy beneath, with curved hairs; racemes 

 2-4 cm. long, few-flowered; calyx about 2 mm. long; corolla orange, 7 mm. long; pod straight, 

 abruptly acute, with short loose pubescence, 1.5-2 cm. long, 2.5 mm. thick, 4-6-seeded; seeds 

 2 mm. long, 1.5 mm. thick, round-angled. 



Type locality: Tequila, Jalisco. 

 Distribution: Jalisco to Durango. 



39. Indigofera pueblensis Rydberg, sp. nov. 



A shrub, perhaps 1 m. high; branches terete, strigose with white and brown hairs; stipules 

 subulate-setaceous, 2 mm. long; leaves spreading, 4-5 em. long; rachis and petiole strigose; 

 leaflets 9-11, elliptic, rounded and mucronate at the apex, obtusish at the base, 1-1.5 cm. 

 long, strigose on both sides, paler beneath; racemes 4-6 cm. long; calyx strigose, 1.5 mm. long; 

 corolla 5 mm. long, orange; pod linear, 2 cm. long, 2.5 mm. wide, about 6-seeded, nearly 

 straight, abruptly acute. 



Tvpe collected on Cerro de la Yerba, vicinity of San Luis Tultillanapa, Puebla, July 1907, 

 C. A. Purpus 2672 (herb. N. Y. Bot. Card.). 



40 Indigofera Conzattii Rose, Contr. U. S. Nat. Herb. 

 8:310. 1905. 



A low shrub; branches terete, densely strigose with white and rusty hairs; stipules subu- 

 late-setaceous, 3 mm. long; leaves spreading, 3-5 em. long; petiole and rachis densely strigose; 

 leaflets 7-17, white-strigose on both sides, densely so beneath, somewhat greener above, 

 10-15 mm. long, obovate to oblongoblanceolate, rounded and mucronate at the apex, cuneate 

 or rounded at the base; racemes in flower 3-4 cm. long, usually shorter than the leaves, in 

 fruit somewhat longer; calyx a little more than 1 mm. long; corolla pink or light-violet, 6 mm. 

 long; pod 2-2.5 cm. long, 12 mm. thick, 4-5-seeded; seeds fully 2 mm. long, 1 mm. thick, 

 round-angled. 



Type locality: Monte Alban, near Oaxaca City. 



Distribution: Oaxaca and Puebla. 



