Part 2, 1920] FABACEAE: PSORALEAE 99 



oblanceolate, acutish at both ends, 8-15 mm. long, sericeous on both sides, less densely so 

 above; peduncles at the ends of the stem and branches, 2-6 cm. long; spikes oblong, 1.5-2 cm. 

 long, about 1 cm. thick; bracts ovate, with a short subulate acumination, silky, shorter than 

 the calyx, sooner or later deciduous; calyx-tube turbinate, about 2 mm. long, densely seri- 

 ceous; lobes filiform from a broad base, longer than the tube, plumose; corolla yellow, fading 

 rose-colored; blade of the banner reniform-flabelliform, 2 mm. long and fully as broad, the 

 claw 3 mm. long; blades of the wings about 3 mm. long, those of the keel-petals 4 mm. long, 

 the claws 1.5 mm. long; pod pubescent. 



Type locality: Pass of the Limpia. 

 Distribution: Western Texas. 



125. Parosela nana (Torr.) A. Heller, Bot. Expl. 

 Texas 49. 1895. 



Dalea nana Torr.; A. Gray, Mem. Am. Acad. II. 4: 31. 1849. 



A perennial herb, branched at the base; stems 1-2 dm. high, decumbent at the base or 

 ascending, silky-canescent; leaves many, spreading, 2-3 cm. long; stipules subulate-setaceous, 

 3-4 mm. long; petiole 4-S mm. long; rachis silky-canescent; leaflets obovate, 5-15 mm. long, 

 sericeous on both sides; peduncles opposite the leaves and at the ends of the branches, 0.5-2 cm. 

 long; spikes oblong, dense, 1-3 cm. long, about 1 cm. thick; bracts ovate, short-acuminate, 

 pubescent, about equaling the calyx; calyx-tube turbinate, 10-angled, 3 mm. long, sericeous; 

 lobes filiform from a broad base, longer than the tube; corolla yellow, fading rose-colored; 

 blade of the banner reniform, 2 mm. long, 3.5 mm. wide, the claw 3 mm. long; blades of the 

 other petals 3-3.5 mm. long, those of the keel-petals slightly larger than those of the wings, 

 the claws 1 mm. long; pod villous. 



Type locality: Willow Bar. on the Cimarron. 

 Distribution: Kansas to Arizona and San Luis Potosi. 

 Illustration: Britt. & Brown, 111. Fl. ed. 2./. 2511. 



126. Parosela Wrightii (A. Gray) Vail, Bull. Torrey Club 

 24: 16. 1897. 



Dalea Wrightii A. Gray, PI. Wright. 1: 49. 1852. 



Dalea subulicola Brand. Univ. Calif. Publ. Bot. 4: 179. 1911. 



Dalea parrasana Brand. Univ. Calif. Publ. Bot. 4: 179. 1911. 



A low perennial, with a woody root and a short caudex; stems several, rarely more than 

 1 dm. long, densely silky-canescent, leafy; leaves pinnately 5-7-foliolate, 2-4 cm. long; stipules 

 subulate, 4-5 mm. long; petiole about 1 cm. long; rachis sericeous, not glandular; leaves ob- 

 lanceolate, obovate, or elliptic, 5-20 mm. long, silky-canescent on both sides; spikes subsessile 

 at the ends of the stems, 2-6 cm. long, nearly 2 cm. thick; bracts lanceolate, acuminate, longer 

 than the calyx; calyx-tube turbinate, 3 mm. long, densely silky, 10-ribbed; lobes filiform, from 

 a broad base, plumose, almost twice as long as the tube ; corolla yellow, fading rose-colored or 

 purplish ; blade of the banner cordate-flabelliform, nearly 3 mm. long and broad, the claw 

 6 mm. long; wings and keel-petals inserted a little above the middle of the staminal tube, the 

 blades of the wings 3.5 mm. long, those of the keel-petals 4 mm. long; pod villous-pubescent. 



Type locality: Dry hills, 80 miles west of the Pecos, Texas. 

 Distribution: Western Texas to Arizona, Zacatecas, and Coahuila. 



127. Parosela carnescens Rydb. Fl. Rocky Mts. 483. 1917. 



Dalea nana elatior Torr.; Port. & Coult. Syn. Fl. Colo. 22, mainly as to description. 1872. 

 Dalea rubescens S. Wats. Proc Am. Acad. 20: 360. 1885. Not D. rubescens S. Wats. 1882. 

 Parosela rubescens A. Nelson; Coult. & Nels. Man. 298. 1909. Not P. rubescensVa.il, 1894. 



A herbaceous perennial, branched at the base; stems several, decumbent below, 1.5-3 dm. 

 high, silky-canescent; leaves spreading, 2-3 cm. long; stipules subulate, 2 mm. long; petiole 

 about 1 cm. long; rachis slightly margined, sparingly silky; leaflets mostly 5, oblanceolate or 

 oblong-oblanceolate, 8-15 mm. long, rounded or mucronulate at the apex, pea-green and 

 glabrate or slightly pubescent above, sericeous and somewhat glandular-dotted beneath; 

 peduncles terminating the stem and branches, 1-2 cm. long; spikes dense, 2-5 cm. long, about 



