96 LKGl'MINOSJE. (PULSE FAMILY.) 



5-7, cuneatc-obovatc, obtuse or emarginate, smooth above ; peduncles longer 

 than the haves, terete, 2- 3-flowered ; calyx-teeth short, acute. — Varies with 

 smaller (^'-1' long) leaves and (lowers, the latter mostly solitary on the short 

 peduncles. — Dry pine barrens, Florida, Georgia, and westward. — Stems 6'- 

 18' long. 



5. T. ambigua, M. A. Curtis. Hoary-pubescent, or nearly smooth ; stems 

 decumbent, angled ; leaves scattered, long-petioled (5' -6' long) ; leaflets 7- 15, 

 distant, wedge-oblong, truncate or emarginate at the apex, paler and often 

 smooth above, purplish and strongly veined beneath ; peduncles flattened, equal- 

 ling or exceeding the leaves, few-flowered ; calyx-teeth short, acute ; flowers 

 white and purple. — Dry sandy soil, Florida to North Carolina. June and 

 July. 



6. T. angUStissima, Sliuttl. Smooth or nearly so throughout ; stems slen- 

 der, prostrate, diffusely branched ; leaves short-petiolcd ; leaflets 10- 15, linear, 

 acute, mostly opposite ; racemes very slender, longer than the leaves, bearing 

 2-4 small scattered flowers; calyx slightly pubescent, with triangular-ovate 

 acute teeth. — South Florida, Rugd. — Stein 1° long. Leaflets 8" -12" long, 

 1" wide, spreading. Corolla about 3" loug. 



14. INDIGOFERA, L. Indigo. 



Calyx 5-cleft. Vcxillum roundish. Keel with a subulate spur on each side, 

 often elastieally reflcxed. Stamens diadelphous (9 & 1). Legume 1 -many- 

 seeded. Seeds usually truncated at each end, often separated by membrana- 

 ceous partitions. — Herbs with unequally pinnate leaves, ami white, brownish, or 

 purplish axillary flowers. Legumes drooping. 



* Racemes longer than the leaves. — Indigenous species. 



1. I. Caroliniana, Walt. Smoothish; stem erect, tall, branching j leaf- 

 lets 10-15, obovatc or oblong; racemes many-flowered; calyx-teeth short, 

 acute; flowers yellowish-brown; legume oblong, veiny, 2-seeded. — Dry pine 

 barrens, Florida to North Carolina. July and August. 1J. — Stem 3°-5° 

 high. Flowers small. Legume 4" -5" long. 



2. I. leptosepala, Nutt. Rough hairy; stem decumbent; ballets 7-9, 

 obovate-oblong or cuncate; racemes 6-15-floweredj calyx-teeth Blender-subu- 

 late ; (lowers pale-scarlet ; legume linear, even, 6- 9-seedcd.— Georgia, Nuttall, 

 South Florida, Blodgett, and westward. — Stem 2° -3° long. Legume \k' 

 long, Btraight 



* * liar, mis shorter than tin itavis. — Introduced sjnri,-i. 



3. I. tinctoria, L. Stem erect; leaflets 9-11, oval, pubescent beneath; 

 legume terete, toruloso, curved. — Waste places. August 



4. I. Anil, L. Stem erect ; leaflets 7 -15, oval; legume compressed, even, 



thickened at eacli Mittirc — Waste places. 



These two species were formerly cultivated in some of the States, and em- 

 ployed in the manufacture of indigo. 



