460 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



70. Parosela benthami (T. S. Brandeg.) Stanfll. 



Daica benthami T. S. BrandeR. Proc. Calif. Acad. II. 2: 148. 1889. 



Dalca megacarpa biiincifcra Greene; Vasey & llnse, Contr. U. S. Nat. Herl>. 1: 

 15. 1890. 



Psorobatus benthami Rydb. N. Aiiier. Fl. 24: 40. 1919. 



Islands of the west coast of Baja California ; type from Santa Margarita 

 Island. 



Shrub, 1 meter high or less, with white-tomentose branches covered with 

 orange or brown glands; leaflets 7 to 11, suborbicular, 4 to 8 mm. long, white- 

 tomentose; s])ikes 2 to 6 cm. long; calyx tomentose; petals pale yellow; fruit 

 tomentose. 



71. Parosela megacarpa (S. Wats.) Standi. 



Dalea megacarpa S. Wats. Proc. Amer. Acad. 20: 359. 1885. 



Psorobatns megacai-pus Rydb. N. Anier. Fl. 24: 41. 1919. 



Sonora (type locality) and Ba.ia California. 



Shrub, 1 meter high or less, with white-tomentose branches ; leaflets 9 to 13, 

 suborbicular, 5 to S mm. long, white-tomentose; spikes 5 to 15 cm. long, nearly 

 1 cm. thick ; calyx tomentose ; i)etals yellow, turning brown ; fruit tomentose, 

 1 cm. long. 



72. Parosela acutifolia (DC.) Rose, Bot. Gaz. 40: 144. 1905. 

 Dalca^ acutifolia DC. Prodr. 2: 245. 1825. 



Morelos and Guerrero ; type from Sierra Chilapa, Guerrero. 



Shrub, 1 to 3 meters high, with glabVous branches; leaflets 7 to 11, elliptic or 

 oval, 1 to 2.5 cm. long, cuspidate, glabrous ; spikes rather lax, 5 to 15 cm. long ; 

 calyx silky-villous ; petals at first greenish yellow, turning dark reddish purple; 

 fruit silky-villous. 



73. Parosela capitata (S. Wats.) Rose, Contr. U. S. Nat. Herb. 12: 272. 1909. 

 Dalea capitata S. Wats. Proc. Amer. Acad. 25: 146. 1890. 



Chihuahua and Coahuila to San Luis Potosi ; type from Carneros Pass, 

 Coahuila. 



Shrub, 30 to 50 cm. high, with finely puberulent branches ; leaflets 5 to 9. 

 obovate, 2 to 3 mm. long, emarginate ; spikes dense, 1 to 3 cm. long ; calyx seri- 

 ceous ; petals yellow ; fruit finely pubescent. 



74. Parosela quinqueflora (T. S. Brandeg.) Rydb. N, Amer. Fl. 24: 84. 1920. 

 Dalco quinqncflora T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 180. 1911. 



San Luis Potosi ; type from Bnena Vista. 



Low shrub with glabrous branches; leaflets 5 or 7, cuneate-oblong. 3 mm. 

 long ; spikes headlike, 3 to 7-flowered ; calyx sericeous ; petals yellow, 



75. Parosela Uoydii Rydb. N. Amer. Fl. 24: 84. 1920. 

 Known only from the type locality, Cedros, Zacatecas. 



Low shrub with glabrous branches ; leaflets 7 or 9. cuneate-oblong, 3 mm. long, 

 glabrous ; spikes 2 to 7-flowered ; petals yellow. 



76. Parosela mucronata (DC.) Rose, Contr. U. S. Nat. Herb. 10: 103. 190C. 

 Dalea mucronata DC. Prodr. 2: 24G. 1825. 



Jalisco and elsewhere in central Mexico. 



Stems sulTruticose, 0.5 to 1 meter high, glabrous; leaflets 7 to 27, elliptic, 

 glabrous, cuspidate ; spikes dense, 1 to 2.5 cm. long, 1 cm. thick ; calyx glabrous ; 

 petals white; fruit glabrous. 



77. Parosela lumholtzii (Robins. & Fern.) Vail, Bull. Torrey Club 26: 117. 

 1899. 



Dalca lumholtzii Robins. & Fern. Proc. Amer. Acad. 30: 115. 1894. 

 Parosela arizonica Vail, Bull. Torrey Club 24: 14. 1897. 



