100 NORTH AMERICAN FLORA [Volume 24 



12 mm. thick; bracts lanceolate or ovate-lanceolate, acuminate, equaling the calyx; calyx-tube 

 3 mm. long, turbinate, silky-pubescent; lobes filiform from a broad base, silky plumose; corolla 

 yellow, fading pinkish; blade of the banner reniform, about 1.5 mm. long, 2 mm. broad, the 

 claw 3 mm. long; wings and keel-petals inserted a little above the middle of the staminal tube, 

 the blades of the wings 2.5 mm. long, those of the keel-petals 3 mm. long, the claws of both 

 1-1.5 mm. long; pod silky-villous. 



Type collected on rocky hills near Chihuahua [city], April 2, 1885, C. G. Pringle 196 (herb. N. Y. 

 Bot. Gard.). 



Distribution: Southern Colorado to Arizona, Chihuahua, and Coahuila. 



128. Parosela aurea (Nutt.) Britton, Mem. Torrey Club 

 5: 196. 1894. 



Dalea aurea Nutt.; (Fraser Cat., hyponym. 1813) Pursh Fl. Am. Sept. 740. 1814. 

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

 Cylipogon capitatum Raf. Jour. Phvs. 89: 97. 1819. 

 Pctalostemon (?) capitatum DC. Prodr. 2: 244. 1S25. 



A perennial, woody at the base; stems several, erect, 3-5 dm. high, silky-canescent, leafy 

 but the upper leaves reduced and scattered; leaves pinnately 5-, rarely 7-foliolate, ascending, 

 2-5 cm. long; stipules subulate, 2-3 mm. long; petiole about 1 cm. long; rachis sericeous, ob- 

 scurely if at all dotted; leaflets oblong-oblanceolate to narrowly obovate, sparingly silky above, 

 densely so and minutely glandular-dotted beneath, 1-2 cm. long; peduncles terminating the 

 stems, 1-10 cm long; spikes dense, 2-5 cm. long, nearly 1.5 cm. thick; bracts ovate, short- 

 acuminate, densely silky, equaling the calyx; corolla yellow; blade of the banner flabelliform- 

 cordate, about 4 mm. long and broad, the claw 4-5 mm. long; wings and keel-petals inserted 

 slightly above the middle of the staminal tube, the blades obliquely oval, with a large rounded 

 basal lobe, those of the wings about 5 mm. long, those of the keel-petals 6-7 mm. long, the 

 claws of both 1 mm. long; pods silky-villous. 



Type locality: "Upper Louisiana" [according to Nuttall (Gen.): near White River, now 

 South Dakota]. 



Distribution: South Dakota and Wyoming to Texas, Coahuila, and New Mexico. 

 Illustrations: Britt. & Brown, 111. Fl./. 2107; ed. 2./. 2510. 



XXXII. Sericeae. Sericeous perennials, suffruticose, at least at the base. Leaflets 

 few, large, silky-canescent. Spikes dense, oblong, on long peduncles at the end of the stem, 

 bracts lanceolate, silky. Calyx-tube silky; lobes filiform, plumose, with a broad base, longer 

 than the tube. Corolla from bluish-purple to rose or nearly white. Blade of the banner 

 suborbicular. Wings and keel-petals inserted far below the middle of the staminal tube. Pod 

 silky. 



129. Parosela sericea (Lag.) Rose, Contr. U. S. Nat. Herb. 

 10: 105. 1906. 



Dalea sericea Lag. Gen. & Sp. Nov. 23. 1816. 



Dalea longipes Moc. & Sesse; DC. Prodr. 2: 245. as synonym. 1825. 

 ? Dalea Alopecurus Sesse & Moc; G. Don, Gen. Hist. 2: 223. 1832.* 

 Dalea Alopecurus Moric. Mem. Soc. Geneve 7: 250. 1836. 

 Psoralea Alopecurus Sessfe & Moc. PI. Nov. Hisp. 120. 1889* 



A perennial, somewhat suffrutescent at the base; stems 5-10 dm. high, silky-pubescent 

 with appressed or spreading hairs, leafy more than half its length, mostly erect; leaves ascend- 

 ing, 3-6 cm. long; stipules subulate-filiform, 1 cm. long or more, sericeous; petiole about 1 cm. 

 long; rachis sericeous, apparently not glandular-dotted; leaflets 7-11, elliptic, acute at both 

 ends, more or less cuspidate-acuminate at the apex, 1-2 cm. long, silky on both sides, obscurely 

 glandular-dotted; peduncles terminal, 1.5-4 dm. long; spikes oblong-cylindfic, dense, 2-7 cm. 

 long, 1.5-2 cm. thick; bracts lanceolate, attenuate, silky, usually slightly, sometimes broadly 

 scarious-margined at the base, or the lowest subulate and not at all scarious; calyx-tube turbi- 



* Both G. Don's description and that of Sesse & Moc. agree well with this plant, except that the 

 plant is said to be an annual. 



