Part 3, 1923] FABACEAE: INDIGOFEREAE 145 



17. Indigofera mucronata Spreng.; DC. Prodr. 2: 227. 1825. 



Galega fruleseens Mill. Gard. Diet, ed 8. Galega no. 5. 1768. Not Indigofera frutescens !,.{. 1789. 



Tephrosia frutescens DC. Prodr. 2: 256. 1825. 



Indigofera jamaicensis Spreng. Syst. 3: 277. 1826. 



Indigofera subulata Griseb. Fl. Brit. W. lnd. 181. 1859. Not (?) /. subulata Vahl. 1813.* 



> Indigofera heterophvlla Presl, Abh. Bdhm. Ges. Wiss. V. 3: 55. 1844. Not /. helerophvlia Tlmnb. 



1794. 

 Indigofera flaccida Koenig; Roxb. Fl. Ind. 3: 375. 1832. 

 Indigofera lephrosioides M. Micheli, Bull. Soe. Bot. Belg. 30': 286. 1891. 



Suffrutescent below; stem procumbent or spreading over bushes, often 1-2 m. long, 

 more or less angled, sparingly strigose; stipules subulate-setaceous; leaves 6-10 cm. long, 

 the rachis and petiole sparingly strigose; leaflets usually 5, sometimes 7, thin, green, sparingly 

 strigose on both sides, elliptic or oval, petioluled, rounded at both ends, mucronate, 1-4 em. 

 long; racemes lax, elongate, in flower often 1 dm. long, in fruit often 2 dm. long; calyx 3 mm. 

 long, strigose; corolla pink, about 6 mm. long; banner suborbicular; pod reflexed, straight or 

 somewhat curved, 2.5-4 cm. long, sparingly strigose, many-seeded; seeds 1.5-1.75 mm. long, 

 less than 1 mm. thick. 



Type locality : Jamaica. 



Distribution: Cuba; Jamaica; southern Mexico to Colombia and Venezuela; apparently also 

 in the East Indies. 



Illustration: Wight, Ic. PI. Ind. Or. pi. 387. 



18. Indigofera keyensis Small, Fl. Fla. Keys 63, 155. 1913. 



•Stem decumbent, branched, 3-5 dm. long, slender, sparingly strigose; leaves 2-3 cm. 

 long; stipules subulate, 3-4 mm. long; rachis and petiole strigose; leaflets mostly 5, oval to 

 elliptic, mostly rounded at each end, sparingly strigose on both sides, 8-20 mm. long, mucron- 

 ate; racemes 5-8 or in fruit sometimes up to 12 cm. long, lax; calyx 2.5-3 mm. long; teeth 

 subulate, slightly longer than the tube; corolla about 4 mm. long; banner orbicular, with a 

 very short claw; lateral spur of the keel-petals ovate, obtuse; pod 3-4 cm. long, about 1.5 

 mm. wide, strigose, somewhat arcuate, abruptly acute, with a slender beak; seeds brown, 

 sub-prismatic, bluntly 4-angled, 2 mm. long, 1 mm. thick. 



Type locality: Lower Metacumbe Key, Florida. 



Distribution: Keys of Florida. 



19. Indigofera Rosei Rydberg, sp, nov. 



Stem erect, shrubby at the base, terete, sparingly strigose, 3-5 dm. high; leaves 3-4 cm. 

 long; stipules subulate, 2-3 mm. long; rachis and petiole sparingly strigose; leaflets 3-5, 

 oval or elliptic, rounded at each end, mucronate, 1-2.5 cm. long, sparingly strigose; racemes 

 5-10 cm. long, lax; calyx about 3 mm. long, strigose; teeth subulate, a little longer than the 

 tube; corolla purplish, 4 mm long; pod linear, somewhat arched, 3-3.5 cm. long, 1.5 mm. wide, 

 abruptly acute, S-10-seeded. 



Type collected near San Juan Capistrano, Zacatecas, August 22, 1897, J . N , Rose 24SO (herb. 

 N. Y. Bot. Garden). 



Distribution: Zacatecas to Puebla. 



20 Indigofera constricta Rydberg. 



Indigofera torulosa H. & A. Bot. Beechey Voy. 286, 1836. Not /. torulosa E. Meyer, F 1836. 



Suffruticose below; stem terete, erect, sparingly strigose; stipules subulate-setaceous; 

 leaves 5-8 cm. long; rachis sparingly strigose; leaflets 7-13, oval or elliptic, 15-25 mm. long, 

 strigose on both sides, paler beneath, mucronate; racemes equaling or longer than the leaves; 

 calyx-lobes subulate, longer than the tube; pod straight, ascending or spreading, 6-10-seeded, 

 2.5-4.5 cm. long, 2 mm. thick, strongly constricted between the seeds, abruptly contracted 

 into a slender beak 2 mm. long; seeds prismatic, 2.5 mm. long. 



Typk locality: Tepic. 



Distribution: Tepic and Guerrero. 



* In the original description, Vahl's species (see Poir. in Lam. Encyc. Suppl. 3: 150. 1813) 

 was described as haying simple or trifololiate leaves and a raceme nearly as long as the leaves, and 

 came from Guinea. 



