Petalostemon. LEGUMINOS^. 311 



about one-third the length of the tube ; petals oblon<T, obtuse at the base, with 

 short claws ; vexilluni cordate. — Michx. ! Ji. 2. />. 50, /. 37, /. 2 ; Nutt. t^en. 

 2. p. 85; DC. jrrodr. 2. p. 243; Hook. jl. Uor.-Am. 1. p. 138. Dalca vi- 

 olacea, Willd. sp. 3. p. 1337. D. purpurea. Vent. hort. Cels. t. 40, fide DC. 

 Dry prairies, Western and South Western States ! and Texas ! North 

 to Saskatcliawan River. July-Aug. — 1^ Root thick, somewhat fusilurin, 

 fasciculately branched below. Stems numerous from one root, about 2 feet 

 high. Leaves fascicled : leaflets G-10 lines long. Bracts obovate-spatulate, 

 rather shorter than tlie calyx, acuminate, the points nearly glabrous. Flow- 

 ers bright purplish-violet, retaining their color when dry. 



10. P . carneum {'^I'lchx.) : glabrous: leaflets 2-3 pairs, lanceolate-linear, 

 glandular; spikes oblong, pedunculate; calyx glabrous, without glands, rather 

 shorter than the obovate bracts, the teeth much shorter than the tube ; petals 

 (rose color) oblong, attenuate at the base into a long claw ; vexillum oblong. 

 —Michx.! jl. 2. p. 49; DC. prodr. 2. j)- '2i'i. P. roseurn, Nutt. in Sill, 

 jour. 5. p. 298; DC. i.e. 



p. alhidum: corolla white. — P. carneum, EU. six. 2. p. 176. 



Sandy soils, Georgia, and Middle Florida, Michaux ! Dr. Chapman! 

 /?. near Milledgeville, Georgia, />r. /?07//c/« .' Aug. — % Stem slender, 1-2 

 feet high, much branched. Leaves fascicled: leaflets usually 3 pairs, about 

 half an inch long, acute. Spikes an inch or more in length, on long pedun- 

 cles. Calyx slightly pubescent on the margin, cleft on the upper side, the 

 teeth scarcely one-third the length of the tube. Petals pale (or sometimes 

 rather deep) rose-color; in 3. pure Avhite. — With the exception of the white 

 flowers and rather narrower petals in /?., we can find no character to distin- 

 guish it from the ordinary form. 



11. P. decumhens (J^nil.): sparingly pubescent ; stem branched from the 

 base, decumbent; spikes OA'-ate-oblong, thick; leaflets 3-4 pairs, linear-ob- 

 long, mucronate, slightly dotted; calyx shorter than the acuminate bracts; 

 the teeth lanceolate, longer than the tube; petals linear-oblong, obtuse at the 

 base ; claws short ; vexillum cordate. — Nutt.! in jour. acad. Philad. 7. p. 93. 



Plains of Red River, Arkansas, Nuttall ! — 11 Stem about a foot long. 

 Leaflets 6-8 lines long and 2 lines wide. Spikes one inch long and about 

 J of an inch in diameter. Calyx a little pubescent, particularly on the mar- 

 gins of the teeth. Corolla deep violet-purple. — Near P. violaccum; but Avith 

 larger and more numerous leaflets, a deeper-cleft calyx, narrower petals, &c. 

 The upper surface of the leaves turns to a verdigris-green in drying. 



12. P. emarginatum : glabrous ; leaflets 7-8 pairs, cuneiform, emarginafe, 

 dotted beneath ; spikes cylindrical, on very long peduncles ; bracts broadly 

 obovate, acuminate, longer than the flowers; calyx very villous, deeply 5- 

 cleft, the segments lanceolate ; petals oblong, rather obtuse at the base ; vex- 

 illum oblong, emarginate. 



Texas, Drummond! — @ Stem about 2 feet high. Leaves numerous: 

 leaflets one-third of an inch long, deeply emarginate. Spikes compact, on 

 peduncles 6-10 inches long. Bracts siiky-villous ; lower ones much dilated. 

 Flowers bright rose-purple. Petals with short claws. Limb of the vexillum 

 (when expanded) somewhat 4-sided.— A very distinct species, having much 

 the appearauce of Dalea alopecuroides. The leaves become verdigris-green 

 when dry. 



13. P. corymbosum (Michx.) : stem corymbosely branched at the sum- 

 mit; spikes globose; bracts lar^e and much dilated, the lowest ones empty 

 and bearing leaflets ; leaves fascicled ; leaflets 2-3 pairs, linear ; calyx deep- 

 ly cleft ; the segments setaceous, Tplumosc. —Michx. ! fl. 2. p. 50 ; Pursh, fl. 



2. p. 461 ; Ell. sk. 2. p. 176; DC. prodr. 2. p. 244, excl. syn. Eaf. Da- 

 lea Kuhnistera, Willd. sp. 3. v. 1337. Kuhnistera Caroliniensis, Lam. diet. 



3. p. 370. 



