Part 3, 1923] FABACEAE: INDIGOFEREAE 151 



41. Indigofera argentea L . Mant. 273. 1771. 



A shrub, 1-2 m. high or more; stems silvery-strigose; leaves 3-5 cm. long; stipules subu- 

 late, 1-2 mm. long; leaflets 5-7, obovate, 1-2.5 em. long, silvery- white; racemes subsessile, 

 12-20-flowered, 1-3 cm. long in flower, shorter than the leaves; calyx-tube 1 mm. long, silvery; 

 lobes deltoid, cuspidate, as long as the tube; corolla 4 mm. long, reddish-yellow; pod 1-15 

 cm. long, 4 mm. wide, 3-4-seeded, distinctly torulose. 



Tvpe locality: India. 



Distribution: Santo Domingo (according to Urban), adventive; native from Abyssinia and 

 Kgypt to India. 



Illustration: L'Her. Stirp. Nov. pi. 79. 



XI. Dispermae. Shrubs or at least suffruticose at the base. Leaflets 9-21, distinctly 

 petiolulatc, thin. Calyx 1-1.5 mm. long, densely strigose, its teeth deltoid or lanceolate, 

 not much exceeding the tube in length. Banner usually broadly obovate, rarely oblanceolate, 

 sessile, densely ferruginous-strigose on the back when young; wings obliquely oblanceolate 

 or oblong, with a rounded basal auricle; keel-petals obliquely oblanceolate; lateral spurs 

 acute. Pod short-oblong, ovoid, or spheric, 1- or 2-seeded, rarely 3- or 4-seeded, abruptly 

 contracted into a short slender beak. Seed if solitary subglobose, if 2 truncate at the end 

 toward the other seed, if more than 2, the middle seeds truncate at both ends, only in /. 

 sphinclosperma subcylindric. 



42. Indigofera guatimalensis Moc, Sesse & Cerv.; Prairi 

 & Baker, Jour. Bot. 40: 67. 1902. 



Indigofera lincloria hrai.hyi.arba DC. Prodr. 2: 224. in part. 1825. 

 Anila lincloria braclivcarpa Kuntze, Rev. Gen. 160. 1891. 

 Indigofera Micheliana Rose. Contr. U. S. Nat. Herb. 8: 310. 191)5. 



Shrubby at the base, 1-2 m. high; branches slightly angled, strigose; stipules subulate- 

 setaceous, 2-4 mm. long; leaves 5-10 cm. long; rachis and petiole strigose; leaflets oblong to 

 oblanceolate, rounded to acutish and mucronate at the apex, acute at the base, 1-2.5 cm. 

 long, strigose on both sides, petioluled; calyx 1.5 mm. long, strigose; corolla like that of 

 /. suffruticosa; pod oblong, 2-4-seeded, straight, 5-15 mm. long, abruptly acute; seeds 2 mm. 

 long, 1 mm. thick, slightly round-angled. 



Type locality: Guatemala 



Distribution: Cuba, Porto Rico, St. Thomas, Martinique; cultivated and escaped; Guatemala; 

 also in Ecuador and Peru. 



43. Indigofera densiflora Mart & Gal Bull. Acad. 

 Brux 10'-: 44 1843. 



Shrubby below, 6-10 dm. high; branches erect, angled, strigose, with gray and ferruginous 

 hairs mixed; stipules subulate, 2 nun long; rachis and petiole ferruginous-strigose; leaflets 

 15-21, oblong or elliptic, rounded and mucronate at the apex, acutish at the base, 1-2.5 cm. 

 long, glabrous above, strigose beneath; racemes short, dense, subsessile, about half as long as 

 the leaves; calyx a little more than I mm. long, dark-ferruginous, almost black; corolla 5 mm. 

 l"iin , brown-violet, densely ferruginous-strigose without; banner broadly obovate; pod oblong, 

 6 8 mm. long, 3 mm. thick, straight, mostly 2-seeded; seeds 2 mm. thick. 



Type locality: Cordillera Oriental. Oaxaca 



Distribution: Veracruz and the state of Mexico to Michoacan and I laxaca; apparently also at 

 Alamos, Sonora. 



44. Indigofera montana Rose, Contr. U. S. Nat. Herb 8: 

 311. 1905. 



Shrubby at the base; stem 5-12 dm. high, angled, strigose; stipules subulate-setaceous, 

 2 mm. long; leaves spreading, S-12 cm. long; rachis and petiole densely strigose; leaflets 15- 

 31, oblong, obtuse or retuse and mucronate at the apex, acutish at the base, 1-2.5 cm. long, 

 5-10 mm. wide, strigose on both sides; racemes nearly equaling the leaves, at least in fruit, 



