276 ORDER XLIII. LEGUMINOSiE. 



lower ones 3-cleft, forming 3 lanceolate teeth. Vexillum with 

 2 callosities at the base ; keel and wings falcate. Legume to- 

 rulose, stipitate, man} 7 -seeded, nearly terete, coriaceous. Seeds 

 reniform, spotted. Twining shrubby plants, with unequal pin- 

 nate leaves. 



1. W. frutes'cens, (D. C.) Stem twining, running over shrubs, 

 branches pubescent and somewhat angular. Leaflets 4 — 6 pair, with a 

 terminal one, pubescent, ovate-lanceolate. Flowers in axillary racemes, 

 clustered, with large colored bracts at the base of the pedicels. Vex- 

 illum broad, refiexed at the summit, green at the base. Legume rugose. 

 — Purple. ^ . April — May. Damp rich soils. Common. 



Genus XI.— RHYNCHO'SIA. D. C. 16— 10. {Glycine of Ell.) 

 (From the Greek rhunchos, a beak, in reference to the end of the keel.) 



Calyx 4-cleft, or 4-parted, or somewhat bilabiate ; the lower 

 lip 3-parted, the upper 2-toothed. Vexillum without callosities. 

 Keel falcate. Wings with 2 teeth at the base. Style smooth. 

 Legume compressed, 1 — 2-seeded, short, generally ovate. Seeds 

 generally caruncled. Generally herbaceous plants. 



1. R. Caribje'a, (D. C.) Stem voluble, climbing over large shrubs, 

 slightly pubescent, angled, branching. Leaves ternate ; leaflets round, 

 rhomboidal, acute, thin, dotted with resinous glands beneaih, 3-nerved. 

 Flowers in filiform racemces; peduncles angled. Calyx about half as 

 long as the corolla, bilabiate ; upper lip cleft half way down. Petals 

 equal. Legume pubescent, falcate. Seeds glabrous, reniform. — Yellow. 

 If. Aug. — Oct. On the coast and islands of Geo. 



2. R. monophyl'la, (T. & G.) Stem pubescent, erect, low. Leaves 

 simple, orbicular, or reniform, rugose, with yellow glandular dots on 

 the under surface. Flowers in axillary racemes, or aggregated at the 

 summit of the stem. Calyx slightly bilabiate, the upper lip 2 cleft ; 

 wings toothed on each side. Anthers globose. Legume pubescent, mu- 

 cronate, falcate. Seeds orbicular, spotted. — Yellow. U- May — Aug. 

 Common in dry soils. 2 — 8 inches. 



3. R. volu'bilis, (T. & G.) Stem twining, angled, villous. Upper 

 leaves ternate, the lower single ; leaflets nearly round or broadly ovate, 

 rugose. Racemes few-flowered. Segments of the calyx very acute. 

 Legume falcate, villous. Seeds compressed, reniform, spotted. — Yellow. 

 If. May — July. In dry soils. Common. 1 — 3 feet. 



4. R. mollis'sima, (T. &, G.) Stem erect, angled, tomentose. Leaves 

 ternate; leaflets oval, rugose, obtuse, velvety-tomentose, glandular dots 

 less distinct than in the three preceding species. Flowers in long (5 — 8 

 inches) racemes. Calyx deeply cleft ; wings toothed near the base. — 

 Yellow. 2/. . Near St. Mary's, Geo. 



5. R. erec'ta, (T. & G.) Stem erect, angled, tomentose. Leaves ter- 

 nate ; leaflets oblong, nearly acute, slightly rugose, middle ones some- 

 what rhomboidal. Calyx 4-parted, the upper segment bifid. Corolla 

 small ; wings toothed near the base. Legume falcate, villous. Seeds 

 reniform. — Yellow. If. June — Aug. Common in poor, dry soils. 1 

 —2 feet. 



