98 NORTH AMERICAN FLORA [Volume 24 



filiform from a broad base, silky-plumose, nearly twice as long as the tube ; corolla yellow, fading 



rose-colored; blade of the banner flabelliform-reniform, 2 mm. long, shorter than the claw; 



wings and keel-petals inserted below the middle of the staminal tube, the blades of the wings 



3.5-4 mm. long, those of the keel-petals 5 mm. long; pods villous. 



Type locality: Dallas, Texas. 

 Distribution: Texas. 



122. Parosela Jamesii (Torr.) Vail, Bull. Torrey Club 

 24: 16. 1897. 



Psoralea Jamesii Torr. Ann. Lye. N. Y. 2: 175. 1827. 

 Jamesia obovata Raf. Atl. Journ. 145. 1832. 

 Dalea Jamesii T. & G. Fl. N. Am. 1: 308. 1838. 

 Parosela Porleri A. Nelson, Bot. Gaz. 31: 395. 1901. 



A perennial, with a thick woody caudex; stems numerous, ascending, usually about 1 dm. 

 high, densely silky; leaves digitately 3-foliolate, 1-2.5 cm. long; stipules subulate-setaceous; 

 petiole about 1 cm. long, densely silky ; leaflets obovate or cuneate, rounded or acutish at the 

 apex, 8-15 mm. long, densely silky-canescent on both sides; peduncles terminal, very short, 

 sometimes obsolete; spikes dense, 1.5-6 cm. long, 15-18 mm. thick; bracts deciduous, mem- 

 branous, ovate or broadly lanceolate, acuminate, equaling the calyx, often purple-tinged; 

 calyx-tube turbinate, 2.5-3 mm. long, densely silky; lobes filiform from a broad base, plumose, 

 longer than the tube; corolla yellow, fading purplish; blade of the banner cordate, 3 mm. long, 

 equaling the claw; wings and keel-petals inserted below the middle of the staminal tube, the 

 blades of the wings 4—4.5 mm. long, those of the keel-petals 7-8 mm. long; pod villous. 



Type locality: Sandy plains of the Canadian. 



Distribution: Kansas and Colorado to Chihuahua and Coahuila. 



Illustration: Clements, Rocky Mt. Fl. pi. 29, f. 6. 



123. Parosela trifoliolata (Moric.) Rydberg. 



(?) Dalea proslrala Ortega, Dec. 69. 1798. 



(?) Dalea triphylla Sesse & Moc.; G. Don, Gen. Hist. 2: 224. 1832. 



Dalea trifoliolata Moric. Mem. Soc. Geneve 6: 531. 1833. 



Dalea triphylla Pavon; Schlecht. Linnaea 12: 289. 1838. 



Parosela triphylla Rose. Bot. Gaz. 40: 144. 1905. 



A perennial, with a thick woody root and caudex; stems several, 2-4 dm. long, branched, 

 striate, canescent with both appressed and spreading hairs; leaves pinnately 3-foliolate, 1.5- 

 3 cm. long, spreading; stipules setaceous, 3-4 mm. long; petiole 5-10 mm. long; rachis more 

 or less hairy; leaflets oblanceolate or elliptic, or rarely obovate, acute to rounded at the apex, 

 glabrous or sparingly hairy above, silky and sparingly and minutely glandular-dotted beneath, 

 8-15 mm. long; spikes terminal, sessile, dense, 2-9 cm. long, IS mm. thick; bracts lanceolate, 

 acuminate, sparingly hirsute, longer than the calyx, deciduous, yellowish below and purplish 

 on the back, or sometimes wholly green; calyx-tube turbinate, 4 mm. long, hirsute, 10-ribbed; 

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

 colored; blade of the banner broadly sub-cordate, 3 mm. long, the claw 4 mm. long; wings and 

 and keel-petals inserted far below the middle of the staminal tube, the blades of the wings 

 5.5-6 mm. long, those of the keel-petals fully 7 mm. long; pod villous. 



Type locality: Mexico. 



Distribution: Chihuahua to Jalisco and Federal District of Mexico. 



Illustrations: Mem. Soc. Geneve 6: pi. 3; Moric. PI. Nouv. Am. pi. 3. 



124. Parosela rubescens (S. Wats.) Vail, Trans. N. Y. 

 Acad. Sci. 14: 34. 1894. 



Dalea nana var. A. Gray, PI. Wright. 1: 46. 1852. 



Dalea nana elatior Torr.; Port. & Coult. Syn. Fl. Colo. 22, in part, as to synonym. 1872. 



Dalea rubescens S. Wats. Proc. Am. Acad. 17: 369. 1882. 



Parosela elatior Vail, Bull. Torrey Club 24: 15. 1897. 



A perennial, with a woody caudex; stems several, herbaceous, erect, about 3 dm. high, 

 strigose-sericeous ; leaves 3-foliolate, rarely the lower 5-foliolate, 1.5-3 cm. long; stipules subu- 

 late, 2 mm. long; petiole 5-10 mm. long; rachis margined, sericeous; leaflets linear-oblong to 



