308 ORDER 46. LEGUMINOS^E. 



4 D. acuminatum DC. Plant erect, simple, pubescent, leafy only at top ; Ifis. 

 ovate, long-acuminate, the odd one round-rhomboidal ; pan. terminal, on a very 

 long peduncle. Common in woods, U. S. and Can. St. 8 to 12' high, ending in 

 a slender panicle 1 or 2f long. Lvs. at the top of the stem and below the panicle ; 

 terminal 1ft. roundish, 3' diam. ; lateral Ifts. smaller, all of them covered with 

 scattered, oppressed hairs, and conspicuously pointed. Fls. small, flesh-colored. 

 Pods of about 3 triangular joints. Jl., Aug. 



6 D. pauciflorum DC. St. assurgent, leafy all the way, retrorsely hairy ; Ifts. 

 membranous, pale beneath, scabrous-pubescent above, terminal one rhomboidal, 

 lateral ones inequilateral-ovate, all rather acute or subacuminate ; rac. terminal, 

 few-flowered ; tis. in pairs ; petals all distinct, spreading. Woods, Penn. to 111. 

 and La. Rt. creeping, tubercular. Sts. often clustered, If high. Petioles 2 to 

 3' long. Lfts. 1 to 3' long, f to f as wide. Fls. 2 to G, white or purplish. Leg. 

 of 2 to 3 obtusely triangular joints. JL, Aug. 



5 D. paniculatum DC. Erect, slender, nearly glabrous; Ifts. oblong-lanceolate, 

 obtuse ; stip. subulate, deciduous ; fls. on long (4 to 5") and slender pedicels in 



panicled racemes; loment of about 3 triangular joints. A handsome species, 

 near 3f in liight, found in woods, U. S. and Can. St. .striate, 2 to 3f high. Lvs. 

 of 3 smooth, narrow-ovate Ifts., broadest at the base, ending with an obtuse 

 point, 1 to 3 in length. Pods about 3 to 5-joiuted, large. Fls. purple, numerous. 

 Jl., Aug. 



7 D. viridiflorum Beck. St. erect, densely pubescent and scabrous above ; Ifts. 

 ovate, mostly obtuse, scabrous above, softly villous beneath ; stip. ovate-lanceolate, 



. acuminate, caducous; panicles very long, leafless; lower tooth of the hairy calyx 

 thrice longer than the upper; leg. of 3 to 4 triangular joints. Alluvial soils, N. 

 Y. to Fla. and La, St. 3 to 4f high, rigid, branched. Lfts. 2 to 3' long. Corolla 

 Violet, turning green in withering. Leg. 1 to 2' long. 



8 D. lasvigatum DC. Glabrous or nearly so; st. simple, erect; Ivs. on long pe- 

 tioles, Ifts. ovate, rather obtuse; pan. terminal, nearly simple; fls. in pairs, on 

 elongated pedicels ; bracts ovate, very small ; lower calyx tootli twice longer than 

 the upper. Woods, N. J., Harper's Ferry, and southward. The smoothest of our 

 Desmodia, 2 to 3f high. Lfts. rather coriaceous, 1 to 3' long, as wide. Pedi- 

 cels 5 to 8" long. Fls. purple. Joints of the loment 2 to 4, half rhombic. Sept. 



j3. JIONOPIIYLLUM. Dwarf; smaller in all its parts ; very smooth ; lower Ivs. 

 unifoliate; rac. simple. Uxbridge, Mass. (Ricard.) 



9 D. glabellum DC. St. erect, smoothish ; Ifts. ovate, small, scabrous-pubescent 

 both sides ; stip. subulate ; lower tooth of the calyx twice longer than the upper 

 entire one; loment nearly straight on the back, with about 4 half rhombic joints. 

 la shades, Car. (Ell. Curtis). Aug., Sept. 



10 D. cuspidatum Torn & Gr. Erect, smooth ; Ifts. oblong-oval, or ovate, sharply 

 acuminate; stip. lanceolate-subulate; rac. paniculate, terminal, large, with scat- 

 tered fls. ; bracts deciduous, ovate, acuminate, striate, smooth ; joints of the loment 

 Buboval. A larger species than either of the preceding, found in woods, U. S. and 

 Can. St. branching, erect, 4 to 6f high. Lfts. 3' long, widest at base, smooth, 

 entire. Stip. and bracts 8 or 9" long. Stipels subulate. Fls. large (8" long), 

 purple. Pods in about G joints, long, pendulous, rough. Aug. (D. bracteo- 

 sum DC.) 



11 D. caiiescens DC. St. striate, scabrous; Ifis. ovate, rather obtuse, scabrous on 

 the upper surface, soft-villous beneath ; stip. large, oblique, acuminate ; pan. ter- 

 minal, very long, densely canescent, naked ; joints of the loment obliquely oval ; 

 upper lip of the calyx nearly entire. Woods, N. Eng. to Fla. and La. An up- 

 right, branching 1 plant, with very long panicles of flowers, greenish externally, 

 purple within. St. 3f high, pubescent. Pods about 4-jointed, most constricted 

 on the lower side. Jl., Aug. (D. Aikinianum Beck.) 



12 D. Canadense DC. St. pubescent; Ifts. oblong-lanceolate; obtuse, nearly 

 smooth; stip. filiform ; bracts ovate, long-acuminate; fls. racemed; joints of the 

 loment obtusely triangular, hispid. Rather common in woods, Can., Penn. and 

 Ind. A handsome plant 3f in height. St. upright striate. Lfts. 2 to 3' long, 1' 

 wide, with G pairs of etraightish veins. Fls. purple, about as large as in No, 10, 



