144 NORTH AMERICAN FLORA [Volume 24 



13. Indigofera miniata Ortega, Dec. 98. 1798. 



Indigofera ornithopodioides Schlecht. & Cham. I.innaea 5: 577. 1830. Not /. ornithopodioides Schum. 

 1827. 



A perennial, with a thick woody root; stems several, branched, strigose, spreading or pro- 

 cumbent, 2-5 dm. long, slender, terete; stipules subulate, 2 mm. long; leaves spreading, 1-3 

 cm. long; rachis and petiole strigose; leaflets 5-9, linear-oblong or oblanceolate, 0.5-15 cm. 

 long, acute, tapering at the base, subsessile, strigose-canescent on both sides; racemes lax, 

 3-8 em. long; calyx canescent, 4-5 mm, long; corolla 5-7 mm. long, light-scarlet; pod 1-2 

 cm. long, 2 mm. thick, tapering into a stout beak, 4-8-seeded; seeds 1.5 mm. long, 1 mm. thick. 



Type locality: Cuba. 



Distribution: Subtropical Florida; Cuba; southern Texas to Veracruz and Morelos. 



14. Indigofera acutifolia Schlecht. Unnaea 12: 282. 1838. 



Indigofera leplosepala angustala S. Wats. Proc. Am. Acad. 17: 342. 1882. Not /. angustala E. 



Meyer, 1835. 



A perennial, with a thick woody root; stems several, decumbent or ascending, 2-5 dm. 

 long, terete, strigose; stipules subulate-setaceous, 4-5 mm. long; leaves spreading, 3-4 cm. 

 long; leaflets 5-16, linear or narrowly oblanceolate, acute at both ends or obtusish at the apex, 

 8-20 mm. long, 2-4 mm. wide, glabrous above, strigose beneath; racemes 4-8 em. long, lax; 

 calyx 5-6 mm. long; corolla rose-colored, 8-9 mm. long; pod about 1.5 cm. long, nearly 2 mm. 

 thick, straight, gradually tapering at the apex, 5-6-seeded. 



Type locality: Grande [Hidalgo]. 



Distribution: Coatiuila to San Luis Potosi, Hidalgo, and Durango. 



15. Indigofera Hartwegii Rydberg. 



Indigofera mexicana Benth. PI. Hartw. 286. 1848. Not /. mexicana I., f. 1781. 



A perennial, with a thick root and short woody caudex; stem woody at the base, ascend- 

 ing, 1-3 dm. long, somewhat angled, striate, branched; stipules fuscous, subulate or lanceolate, 

 2-3 mm. long; leaves spreading, 1-2 cm. long; rachis and petiole strigose; leaflets 5-9, oblanceo- 

 late or cuneate, 5-10 mm. long, 2-4 mm. wide, cuneate at the base, sessile, rounded or obtuse, 

 and mucronate at the apex, glabrous or very sparingly strigose above, grayish-strigose beneath ; 

 peduncle 1-2 cm. long; racemes short and dense; bracts lanceolate-subulate, fuscous, deciduous, 

 shorter than the calyx; calyx strigose, 4 mm. long; corolla 6-7 mm. long; pod straight, 1.5-2 

 cm. long, 2.5 mm. thick, strigose, tapering at the apex, 6-12-seeded; seeds 2 mm. long, fully 

 1 mm. thick. 



Type locality: Le6n (Guanajuato). 



Distribution : Jalisco and Guanajuato to Oaxaca and Chiapas. 



VIII. Mucronatae. Plants suffrutescent below. Leaflets mostly 5, distinctly petiolulate, 

 rounded at both ends, thin. Calyx-teeth narrowly subulate, fully twice as long as the tube. 

 Banner broadly obovate, sessile; wings oblanceolate with a small basal auricle, short-clawed; 

 keel-petals obliquely oblanceolate; lateral spurs acute or obtuse. Pod slender, sub-tetragonous, 

 gradually tapering into a stout beak. Seeds prismatic. 



16. Indigofera laevis Rydberg, sp. nov. 



A perennial, shrubby below; stem branched, probably 1 in. high; branches straw-colored, 

 sparingly strigose; stipules subulate-setaceous, 3 mm. long; leaves 4-6 cm. long, spreading; 

 rachis and petiole sparingly strigose; leaflets mostly 5, short-petioluled, elliptic or oval, muc- 

 ronate, rounded at each end, 1.5-3 cm. long, light-green, glabrous above, sparingly strigose 

 beneath; racemes 1-1.5 dm. long, lax; bracts lance-subulate, deciduous, 1-2 mm. long; calyx 

 about 3 mm. long, strigose, the lobes subulate, twice as long as the tube; corolla 4-6 mm. 

 long; pod reflexed, slightly curved, 3-4 cm. long, 2 mm. wide, gradually acuminate at the 

 apex, bluntly 4-angled, sparingly strigose, 8-10-seeded. 



Type collected among rocks and bushes in the mountains near Guaymas, Sonora, in 1887, 

 Edward Palmer 296 (Gray Herbarium). 



