308 LEGUMINOS^. Dalea. 



many- (30-50-) flowered; the lower flowers somewhat remote. Petals deep 

 purple : wings and keel oval, nearly equal : vexillum broadly cordate, a little 

 longer than the oth^r petals. Stamens 10. 



3. D. formosa (Torr): suffruticose, much branched, glabrous; leaflets 

 very small, about 5 pairs, cuneate-oblong, retuse, dotted with black glands 

 beneath; spikes loose, few-flowered, on short peduncles; bracts ovate, short- 

 er than the flower, silky-viOous on the margin ; teeth of the calyx subulate, 

 plumose. Torr. ! in ann. lye. Nexo-York, 2. p. 178. 



On the Platte, Dr. James ! — Leaflets thick, about 2 lines long, very nar- 

 row. Spikes 6-10-flowered. Flowers large and showy, bright purple. Ca- 

 lyx dotted. Vexillum cordate, shorter than the keel. — AUied to D. tubercu- 

 losa, Lagas. 



4. D. aurea (Nutt.): stem pubescent, erect; leaflets 3-4 pairs, oblong- 

 obovate and linear-oblong, more or less silky-pubescent ; spikes ovate, very 

 compact, on long peduncles; bracts rhombic-obovate, as long as the calyx; 

 teeth of the calyx subulate, broad at the base, plumose. — Nutt.! gen. 2. p. 

 101; Pursh! fl. 2. p. 741; DC. prodr. 2. p. 244. Cylopogon capitatum, 

 Raf.! I. c. Petalostemon capitatum, DC. I. c. 



Gravelly hills, near White River, Missouri, NiittaU, Bradbury ! On the 

 Platte, Dr. James! Prairies of Arkansas, Dr. Leavenworth! Texas, 

 Drummoud!—ll Stem about 2 feet high. Leaves remote: leaflets 4-6 

 lines long, when young almost villous beneath, nearly glabrous above, and of 

 a grass-green colour when dry, often very sparingly dotted. Spikes 1-2 inches 

 long, very thick. Calyx deeply cleft. Corolla yellow : vexillum small, shorter 

 than the oblong wings and keel-petals. 



5. D. alopecuroides ( Willd.) : glabrous, erect, much branched ; leaflets 

 10-14 pairs, linear-eUiptical, obtuse or retuse, conspicuously dotted beneath; 

 spikes cylindrical or oblong, silky -villous ; bracts as long as the calyx ; seg- 

 ments of the calyx lanceolate, acuminate, shorter than the tube. — Willd. sp. 

 3. p. 1336 ; Fursh ! fl. 2. p. 474 ; Nutt. gen. 2. p. 101 ; DC. prodr. 2. p. 244. 

 D. Cliffbrtiana, Willd. I. c. ; Pursh, I. c. ; Ell. sk. 2. p. 195. D. Linnaei, 

 Michx. ! Ji. 2. p. 57, t. 38. D. pedunculata, Pursh, I. c. ? Petalostemum 

 alopecuroideum, Pursh, I. c. 



Alluvial soils along the Mississippi and Missouri, Nuttall ! Prairies of 

 Illinois, Short ! In Carolina, Pursh.— (J) Stem 1-2 feet high, branched. 

 Leaves numerous: leaflets about 3 lines long, pale green. Spikes 1-2 inches 

 long on short peduncles. Calyx thickly clothed with silky hairs. — We have 

 nev'e'r received this plant from the Southern Atlantic States. There are, 

 however specimens of Enslen in Lambert's herbarium (perhaps collected in 

 Georgia), which are labelled D. alopecuroides ; but the spikes are only 6-8- 

 flowered, and on very long peduncles. 



§ Leaves palmately trifoliolate, not dotted with glands. 



6. D. Jamesii : whole plant silky ; leaves trifoliolate ; leaflets obovate, 

 very obtuse ; stipules spiny ; spikes oblong, sessile ; calyx deeply cleft ; seg- 

 ments setaceous, plumose ; longer than the vexillum ; keel longer than the 

 wings.— Psoralea .Tamesii, Torr.! in ann. lye. New- York, 2. p. lib. 



Sandy plains of the Canadian, Dr. James!— Stems several from one root 

 about 4 inches hi<,4i, somewhat woody at the base. Petioles about half an 

 inch long. Leaflets as long as the petiole. Spikes dense and broad, about 

 one inclAong. Bracts ovate, acuminate, longer than the calyx. Keel and 

 wings purple, oblong: vexillum yellowish ?— We have detected no glands in 

 thislingular species, which has, with trifoliolate leaves, wholly the flowers of 

 Dalea. 



