Part 3, 1923] FABACEAE: INDIGOFEREAE 147 



25. Indigofera Langlassei Rydberg, sp. now 



A shrub, 1.5 m. high; branches terete, brownish, nearly glabrous; stipules subulate- 

 setaceous; leaves 5-12 cm. long, spreading; rachis and petioles slightly strigose; leaflets 5-9, 

 broadly oval, 2-3.5 cm. long, 1-2 cm. wide, rounded at each end, mucronate, thin, green on 

 both sides but slightly paler beneath, sparingly strigose on both sides; racemes lax, 1-2 dm. 

 long; bracts subulate, about equaling the pedicels; calyx 2 mm. long; corolla 7 mm. long; 

 pod 2.5-3 cm. long, 2 mm. thick, 7-8-seeded; seeds fully 2 mm. long and 1 mm. thick, round- 

 angled. 



Type collected in Sierra Madre, Guerrero or Mil human , November 11. 1898, Langlasse 009 

 (U. S. Nat. Herb. no. 385535). 



Distribution: Sinaloa to Guerrero. 



26. Indigofera cuernavacana Rose, Contr. U. S. 

 Nat. Herb 5: 140 1897. 



A shrub, 5-12 dm. high; branches strigose, somewhat angled; stipules subulate-setaceous, 

 4-5 mm. long; leaves spreading, S-12 cm. long; rachis and petiole sparingly strigose, grooved 

 above; leaflets elliptic or oval, acutish to rounded, mucronate, 2-3 cm. long, 1.5-2 cm. wide, 

 rather thin, green and sparingly strigose on both sides; racemes many-flowered, shorter 

 than the leaves; calyx 2 mm. long; corolla 6 mm. long; pod about 2.5 cm long and 2 mm. 

 thick, strigose, 6-7-seeded; seeds 2 mm. long, 1 mm. thick, round-angled. 



Type locality: Cuernavaca, Morelos. 



Distribution: Morelos and Guerrero. 



27. Indigofera lancifolia Rydberg, sp. nov. 



A shrub; branches terete, grayish or ferruginous-strigose; stipules subulate-setaceous. 

 3-4 mm. long; leaves spreading, 8-12 cm. long; rachis and petiole strigose, grooved above; 

 leaflets 5-7, lanceolate or oblong-lanceolate, acute and mucronate, 2-4 cm. long, 1-2 em. 

 wide, dark-green and sparingly strigose above, pale and densely strigose beneath; racemes 

 4-5 cm. long; calyx about 2 mm. long, its teeth deltoid, equaling the tube; corolla 7 mm. 

 long; pod 4.5-5.5 cm. long, less than 2 mm. thick, about 10-seeded; seeds 3 mm. long, 1 mm. 

 wide, somewhat 4-angled, rounded-rhombic in cross-section. 



Type collected in the vicinity of Acapulco, Guerrero, October 1894 to March 1895, Edward 

 Palmer 251 (U. S Nat. Herb. no. 266504). 



28 Indigofera discolor Rydberg, sp nov. 



A shrub, branches terete, brown, strigose becoming glabrate; stipules small, subulate; 

 leaves spreading, 4-5 cm. long; rachis and petiole strigose, grooved above; leaflets 5-7. oval, 

 elliptic, i>i obovate, rounded and mucronate at the apex, 1-2 cm. long, 5-10 mm. wide, green 

 and sparingly strigose above, pale and densely strigose beneath; racemes about 5 cm. long; 

 calyx 2 mm. long; corolla unknown; pod 4 cm. long, less than 1.5 mm. thick, 7-S-seeded; 

 seeds 2.5 mm. long, 1 mm. thick, round-angled. 



Type collected at Lodiego, Sinaloa, October 9-25, 1891, Edward Palmer 1634 (herb. N. Y. Bot. 

 Gard.) . 



Distribution: Type locality and vicinity; apparently also near Cordoba, Veracruz. 



29. Indigofera panamensis Rydberg, sp. nov. 



A shrub, about 2 m. high; branches terete, grayish-strigose; stipules subulate, 1-2 mm. 

 long; leaves spreading, 3-5 cm. long; rachis and petiole grayish-strigose; leaflets 7-11. dis- 

 tinctly petioluled, oblanceolate, 1-2 cm. long, 5-8 mm. wide, obtuse and mucronate at the 

 apex, cuneate at the base, green and sparingly strigose above, pale and densely strigose be- 

 neath; racemes 3-4 cm. long; calyx less than 2 mm. long; corolla unknown; pod slightly 

 curved, about 2 cm. long, 1.5 mm. thick, tapering into a long slender beak, strongly tornlose, 

 3-4-seeded; seeds 2.5 mm. long, fully 1 mm. thick, round-angled. 



Tvpe collected in the vicinity of Penonome, Panama 1918. R. S. Williams 123 iherb N. V. 

 Bot. Gard.). 



