2. Parosela Lanáta (Spreng.) Britton. Woolly Parosela

Fig. 2508

Dalea lanata Spreng. Syst. Veg. 3: 327. 1826.

D. lanuginosa Nutt.; T. & G. Fl. N. A. 1: 307. 1838.

P. lanata Britton, Mem. Torr. Club 5: 196. 1894.

Decumbent, branching, softly and densely pubescent throughout, 1°-2° long. Leaflets 9-13, obovate, obtuse, truncate or emarginate at the apex, narrowed or cuneate at the base, nearly sessile, 4"-6" long, about 2" wide above; spikes numerous, short-peduncled, 1'-4' long, rather loosely flowered; bracts oval or obovate, long-acuminate or mucronate, about \\" long; flowers 3" long; corolla deep purple or red; calyx-teeth subulate, plumose; standard cordate, slightly exceeding the wings and keel; stamens 10.

Prairies, Kansas to Texas, Utah and New Mexico. Summer.

3. Parosela Dálea (L.) Britton. Pink Parosela

Fig. 2509

Psoralea Dalea L. Sp. Pl. 764. 1753.

Dalea alopecuroides Willd. Sp. Pl. 3: 1336. 1803.

Parosela Dalea Britton, Mem. Torr. Club. 5: 196. 1894.

Erect, branched, 1°-2° high, foliage glabrous. Leaflets 15-41, oblanceolate or linear-oblong, obtuse at the apex, narrowed at the base, sessile or nearly so, 2"-3" long, 1/2"-1" wide; spikes terminal, oblong, very dense, 1-2' long, about 5" thick, peduncled; bracts ovate or lanceolate, acuminate, deciduous, about equalling the calyx, hyaline-margined; calyx very silky-pubescent, its teeth linear-lanceolate, acuminate, plumose; corolla pink, or whitish, about 2" long; keel about equalling the wings.

Prairies, Illinois to Minnesota, Nebraska, South Dakota, Alabama, Texas, Arizona and Mexico. Aug.-Sept.

4. Parosela Aúrea (Nutt.) Britton. Golden Parosela

Fig. 2510

Dalea aurea Nutt. Fraser's Cat. 1813.

Psoralea aurea Poir. in Lam. Encycl. Suppl. 4: 590. 1816.

P. aurea Britton, Mem. Torr. Club 5: 196. 1894.

Erect, pubescent, simple, 1°-2° high. Leaflets 5-9, sessile, rather distant, obovate, oblong or oblanceo-late, obtuse at the apex, narrowed at the base, 4"-6" long, 1 1/2"-2 1/2" wide; spikes solitary, short-peduncled, ovoid or globose, very dense, 1'-3' long, 6"-8" thick; bracts ovate, mucronate, shorter than the densely plumose and pubescent calyx-teeth; corolla yellow, 4"-5" long; standard much shorter than the wings and keel.

Prairies, South Dakota to Missouri (?), Nebraska, Colorado and Texas. Summer.

5. Parosela Nána (Torr.) Heller. Low Parosela

Fig. 2511

Dalea nana Torr.; A. Gray, Mem. Am. Acad. 4: 31.

1849. P. nana Heller, Cont. Frank. & Marsh. Coll. 1: 49.

1894.

Suffrutescent, erect, silky-villous throughout. Stems several from the same root, branched, 3'-10' high; leaflets 3-5, rarely 4"-5" long, obovate to linear-oblong, obtuse or mucronulate, narrowed at the base, rarely glabrate above, and usually minutely glandular beneath; petioles as long as the leaflets; spikes oblong-ovoid, 5" - 10" long, short-peduncled; bracts ovate, mucronate or aristate, shorter than the calyx, caducous; corolla yellow, longer than the setaceous and plumose calyx-teeth; standard shorter than the wings and keel.

Sand hills and prairies, Comanche Co., Kansas, to Texas and California. Summer.

Parosela Jámesii (Torr.) Vail, with large thick spikes up to 3 1/2' long, the bracts as long as the calyx or longer, the leaves 3-foliolate, ranges from Colorado to Texas and New Mexico, and is recorded from Kansas.