456 CONTRIBTTTIONS FROM THE NATIONAL HERBARIUM. 



38. Parosela diversicolor Rydb. N. Anier. Fl. 24:109. 1920. 

 Known only from the type locality, Sierra de Clavellinas, Oaxaca. 



Shrub, 1 meter high or more, with glabrous branches ; leaflets 13 to 35, oblong, 

 7 to 9 nun. long, glabrous ; spikes dense, 1 to 2 cm. long ; calyx silky-villous, the 

 lobes plumose ; petals yellow, turning rose and purple ; fruit silky-villous. 



39. Parosela caudata Rydb. N. Amer. Fl. 24: 112. 1920. 

 Known only from the type locality, Alvfirez, San Luis Potosl. 



Shrub, 1 meter high or more, the branches densely villous*; leaflets 13 to 17, 

 oblong or elliptic, 5 to 6 mm. long, villous ; spikes dense, 2 to 6 cm. long, 1 cm. 

 thick; calyx silky-pilose, the lobes plumose; petals yellow, turning brownish; 

 fruit villous. 



40. Parosela lutea Cav. Descr. PI. 186. 1802. 

 Psoralea lutea Cav. Icon. PI. 4: 12. pi. 325. 1797. 

 Dalea ovalifolia Ortega, Hort. Matr. Dec. 30. 1797. 

 Dalea lutea Willd. Sp. PI. 3: 1341. 1803. 



Nuevo Le6n to Puebla. Guatemala. 



Shrub, 30 to 50 cm. high, the branches densely pubescent; leaflets 15 to 21, 

 elliptic or oval, 4 to 6 mm. long, often retuse, pilose, sometimes glabrate on 

 the upper surface ; spikes dense, 5 to 8 cm. long, 1 cm. thick ; calyx pilose, the 

 lobes pilose ciliate ; petals yellow ; fruit villous. 



41. Parosela wardii Rydb. N. Amer. Fl. 24: 112. 1920. 

 Tamaulipas and San Luis Potosf ; type collected at San Luis Potosi. 



Shrub, 30 to 60 cm. high, the branches pubescent ; leaflets 9 to 15, oblong, 

 3 to 8 mm. long, villous-canescent, obtuse ; spikes dense, 2 to 3 cm. long ; 

 calyx silky-pilose, the lobes plumose; petals yellow, fading brownish; fruit 

 densely pubescent. 



This has been reported as Dalea leucostoma var. and as D. cinerea Moric. 



42. Parosela arg'yrostachya (Hook. & Am.) Rydb. N. Amer. Fl. 24: 110. 1920. 

 Dalea argyrostacliya Hook. & Am. Bot. Beechey Voy. 285. 1836. 

 Chihuahua to Guerrero and Chiapas; type from Jalisco. 



Shrub 50 cm. high or more, with glabrous branches ; leaflets 15 to 21, oblong 

 or obovate, glabrous ; spikes dense. 3 to 6 cm. long, acute ; calyx glabrous, the 

 lobes plumose ; petals yellow, turning brownish ; fruit pubescent above, glabrous 

 below. 



43. Parosela botterii Rydb. N. Amer. Fl. 24: 110. 1920. 

 Known only from the type locality, Orizaba, Veracruz. 



Stems glabrous or when young brownish-villous ; leaflets 17 to 21, elliptic, 

 2 to 4 mm. long, glabrous ; spikes dense, 3 to 5 cm. long, acute ; calyx sparsely 

 hirsute, the lobes plumose ; petals i-ose-purple. 



44. Parosela plumosa (S. Wats.) Rose, Contr. U. S. Nat. Herb. 10: 106. 1906. 

 Dalea plumosa S. Wats. Proc. Amer. Acad. 21: 448. 1886. 



Chihuahua, the type collected near the city of Chihuahua. 



Shrub 30 to 50 cm. high, the branches finely pubescent ; leaflets 11 to 17, 

 elliptic-obovate, 4 to 6 mm. long, minutely pilose; spikes dense, 2 to 4 cm. 

 long, 1 cm. thick; calyx glabrous, the lobes long-pilose; petals yellow, turning 

 brownish ; fruit pubescent. 



45. Parosela painteri Rose. Contr. U. S. Nat. Herb. 10: 105. 1906. 

 Quer^taro ; type from San Juan del Rfo. 



Shrub 30 to 50 cm. high, the branches puberulent; leaflets 11 to 15, oblong, 

 5 mm. long, retuse, glabrous above, minutely pubescent beneath ; spikes 2 to 3 

 cm. long ; calyx glabrous, the lobes long-pilose ; petals yellow, turning brownish 

 purple ; fruit den.sely pubescent. 



