96 LKGUMINOS-*;. (rULSK FAJIILY.) 



5-7, cuncate-obovatc, obtuse or cmarginate, smooth above ; peduncles longer 

 than the leaves, terete, 2- 3-flowei"ed ; calyx-teeth short, acute. — Varies with 

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

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

 1 8' long. 



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

 decumbent, angled ; leaves scattered, long-petioled (.5' - 6' long) ; leaflets 7-1.5, 

 distant, wedge-oblong, tiimcate or emarginatc 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, Shuttl. Smooth or nearly so throughout ; stems slen- 

 der, prostrate, diff'usely 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, Rvgel. — Stem 1° long. Leaflets 8" -12" long, 

 I" wide, spreading. Corolla about 3" long. 



14. INDIGOFERA, L. Ixdigo. 



Calyx 5-clcft. Ycxillum roundish. Keel with a subulate spur on each side, 

 often clastically rcflexed. Stamens diadelphous (9 & 1). Legume 1 -many- 

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

 ceous partitions. — Herbs with unequally pinnate leaves, and M'hite, brownish, or 

 purplish axillary flowers. Legumes drooping. 



* Racemes loiir/er than the leaves. — Tndirjenoits species. 



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

 lets 10-15, obovate 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. IJ. — Stem 3° -5° 

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



2. I. leptosepala, Nutt. Eough hairy ; stem decumbent ; leaflets 7-9, 

 obovate-oblong or cuneate ; racemes 6-1 5-flowered ; calyx-teeth slender-subu- 

 late ; flowers pale-scarlet ; legume linear, even, 6 - 9-seeded. — Georgia, NiitluU, 

 South Florida, Blochjett, and westward. — Stem 2° -3° long. Legume 1^' 

 long, straight. 



* * Racemes shorter than the leaves. — Introduced species. 



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

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



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

 thickened at each suture. — Waste places. 



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

 ployed in the manufacture of indigo. 



