LEGUMlNOSiE. (PULSE FAMILY.) 101 



Var. divergens. ( L. divergcns, Purs^.) Stems diffuse ; leaflets oval or ob- 

 long ; peduncles tiliform, few-flowered, longer than the leaves, and bearing 

 cliiefly sterile flowers. 



Var. sessiliflora. (L. sessiliflora, J//c/^x. L. violacea, ^//. ) Stem erect; 

 leaflets oblong ; flowers mostly fertile, in dense and nearly sessile clusters which 

 are much crowded near the summit of the branches. 



Var. reticulata. (L. reticulata, Pers) Stem erect ; leaves linear-oblong ; 

 flowers clustered as in the preceding variety. 



Dry barren soil, Florida to Mississippi, and northward. August. — Stem 

 2© -3© high. Leaflets pale beneath. Corolla twice as long as the calyx. 



3. L. Stuvei, Xutt. Stem erect, branching, softly-pubescent ; leaflets oval 

 or roundish, tomentosc or silky on both surfaces, or only beneath, longer than 

 tlic petiole ; racemes axillary, mostly longer than the leaves ; flowers nearly 

 all perfect and fertile ; legume longer than the calyx, ovate, villous. — Dry 

 sterile soil, Mississippi to North Carolina, and northward. August. — Interme- 

 diate between No. 2 and Xo. 4. 



* * Flowers all perf<fct and fertile : corolla as long as the cahjx, yrlloiiush-wliite, the 

 vexilliiiii sjiolttd icith purple : legume included in the culj.r. 



4. L. hirta, EU. Stem erect, pubescent or villous ; leaflets oval or round- 

 i>h, longer than the petiole, pubescent beneath or on both sides ; spikes dense, on 

 peduncles longer than the leaves ; calyx-teeth linear-lanceolate, as long as tlie 

 ovate i)ul)esccnt legume. — Dry ban-en soil, Florida to Mississipjii, and north- 

 ward. August. — Stem 2° - 4° higli. 



5. L. capitata, Michx. Stem mostly simple, softly pubescent, erect ; 

 leaves sliort-jictioled ; leaflets varying from oblong to linear, silky on both sides, 

 or only beneath ; calyx hairy, longer than the oval villous legume. (L. frutes- 

 cons and L. angustifolia, Ell.) — Diy or damp sterile soil, Florida to Mississippi, 

 and northward. August. — Stem 2'^- 4° high. 



25. DE3MODIUM, DC. (Hedtsarum, L, Ell.; 



Flowers all similar and perfect. Calyx bilabiate ; the upper lip emarginate 

 or entire, tlie lower 3-cleft. Corolla inserted on the base of the calyx. Stamens 

 diadclphous (9 &,1), or more or less raonadelphous. Legume flattened, 2-G- 

 jointed. — Chiefly perennial branching herbs. Leaves trifoliolate, pctiolcd, stip- 

 ulate ; the leaflets pctiolulate and stipellate. Flowers small, purple or whitish, in 

 terminal racemes or panicles. Legumes hispid with hooked hairs. 



§ 1 . Stamens monadilphous below : legumes conspicuously stipitate, 2 - 4-jointed, the 

 joints hnlf-ohovate, concave on the hack. 

 1. D. pauciflorum, Nutt. Stem low, ascending, mostly simple, leafy ;. 

 leaves scattered, long-petioled ; leaflets thin, acute, ciliate, pale beneath, the lat- 

 eral ones ovate, the terminal one rhombic-ovate; stipules minute ; racemes ter- 

 minal, 4-8-flowered, mostly shorter than the leaves. — Shady woods, Florida to 

 Tennessee, and northw.ird. August. — Stem 1° high. Leaflets l'-2' long. 

 Corolla pale-purple or white. 

 9* 



