452 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Densely branched shrub, 1 to 3 meters high, with spinose branches ; leaves 

 0.5 to 3 cm. long ; racemes 4 to 8 cm. long, 6 to 20-flo\vere(l ; calyx sparsely 

 short-hirsute or glabrate ; petals blue. 



8. Parosela puberula (Parish) Standi. 



Parosela schottii jmherula Parish, Bot. Gaz. 55: 312. 1913. 



Psorodendron puJjerulum Rydb. N. Amer. Fl. 24: 4.5. 1919. 



Northern Baja California. Southern California, the type from the Colo- 

 rado Desert. 



Densely branched shrub with spinose branches ; leaves 1 to 2.5 cm. long ; 

 racemes 3 to 5 cm. long ; calyx densely canescent ; petals bluish purple, 1 cm. 

 long ; fruit puberulent. 



Perhaps only a form of P. schottii. 



9. Parosela g-oldmani Rose, Contr. U. S. Nat. Herb. 8: 305. 1905. 

 Known only from the type locality, Sierra de Choix, Sinaloa. 



Stems suffrutescent, 30 to 50 cm. high or more, short-hirsute, becoming glab- 

 rate, reddish ; leaflets 15 to 35, oblong or elliptic, 3 to 4 mm. long, obtuse, white- 

 hirsute; racemes 2 to 4 cm. long; calyx densely liii-sute: petals bluish purple; 

 fruit hirsutulous. 



10. Parosela parryi (Torr. & Gray) Heller, Cat. N. Amer. PI. ed. 2. 6. 1900. 

 Dalea divaricata cinerea A. Gray, Proc. Amer. Acad. 7: 336. 1868. 

 Dalea parryi Torr. & Gray; A. Gray, Proc. Amer. Acad. 7: 397. 1868. 

 Sonora and Baja California. Southern Arizona and California ; type from' 



Fort Mohave, California. 



Stems slender, suffruticose, 30 to 60 cm. high, gray-strigose ; leaflets 15 to 33, 

 obovate or suborbicular, 2 to 5 mm. long, emarginate, strigose ; racemes 3 to & 

 cm. long; calyx strigose-canescent ; petals violet; fruit minutely puberulent. 



11. Parosela maritima (T. S. Brandeg.) Rose. Contr. U. S. Nat. Herb. 8:304. 

 1905. 



naleu maritima T. S. Brandeg. Proc. Calif. Acad. II. 3: 125. 1891. 



Southern Baja California ; type from Todos Santos. 



Stems suffruticose, decumbent, densely white-pubescent ; leaflets 15 to 23, 

 oblong-obovate, 3 to 4 m'ni. long, densely canescent ; racemes 1 to 3 cm. long, 

 dense ; calyx glabrous below, hirsute above ; petals purple ; fruit glabrous. 



12. Parosela procumbens (Moc. & Sesse) Rose, Contr. U. S. Nat. Herb. 8:304. 

 1905. 



Dalea procum>bens Moc. & Sesse; DC. Prodr. 2:246. 1825. 



Dry hillsides. Jalisco to Chiapas (type locality). 



Stems suffruticose, prostrate, 30 to 50 cm. long, rt^ldi.srh. pilose; leaflets 15 to 

 21, oval or obovate, 2 to 3 mm. long, glabrous, crenulate ; racemes 1 to 2 cm. long, 

 dense ; calyx pilose on the ribs ; petals bright purple ; fruit puberulent. 



13. Parosela palmeri Rose, Contr. U. S. Nat. Herb. 8: 304. 1905. 

 Dry hillsides, Sonora and Sinaloa ; type from Alamos, Sonora. 



Slender shrub, 0.5 to 1 meter high, glabrous or nearly so ; leaflets 11 to 21, 

 elliptic or obovate, 2 nun. long, retuse, glabrous ; racemes 4 to 6 cm. long, lax ; 

 calyx puberulent ; petals ochroleucous, tipped and margined with purple. 



14. Parosela neglecta (Robinson) Rose, Contr. U. S. Nat. Herb. 8:304. 1905. 

 Dalea nc{/lecta Robinson, Proc. Amer. Acad. 29: 329. 1894. 



Known only from Guanajuato, the type locality. 



Stems woody below, 30 to 50 cm. high, glabrous ; leaflets 11 to 15, elliptic or 

 oblanceolate, 7 to 10 nnn. long, rounded at apex, glabrous, glaucous beneath ; 

 racemes lax, 2 to 4 cm. long; calyx i>ulieruUMit ; jn^tals deep purjile. 



