458 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



54. Parosela purpusi (T. S. Brandeg.) Rose, Contr. U. S. Nat. Herb. 10: 106. 

 1906. 



Dalea purpusi T. S. Brandeg. Erythea 7: 2. 1899. 



Baja California ; type from Calmalll. 



Densely branched shrub, 30 to 40 cm. higli, the branches glabrous or strigil- 

 lose; leaflets 3 or 5, obovate, 4 to 6 mm. long, strigose ; spikes 1.5 cm. long; 

 calyx tube sericeous, the lobes plumose; petals pink; fruit sericeous. 



55. Parosela brandegei Rose, Contr. U. S. Nat. Herb. 10: 106. 1906. 



Dalea ramosissima Benth. Bot. Voy. Sulph. 11. 1844. Not D. ramosissima 

 Mart. & Gal. 1843. 



Parosela ramosissima Heller, Cat. N. Amer. PI. ed. 2. 6. 1900. 



Baja California ; type from Magdalena Bay. 



Shrub with reddish glabrous branches ; leaflets 11 or 13, obovate, 2 to 5 mm. 

 long, obtuse or retuse, glabrous; spikes dense, 3 to 5 cm. long. 1 cm. thick; 

 calyx densely pilose ; petals rose-colored ; fruit sparsely pilose. 



56. Parosela smithii Rydb. N. Amer. Fl. 24: 106. 1920. 

 Oaxaca to Hidalgo ; type from Sierra de San Felipe, Oaxaca. 



Slender shrub about 1 meter high, the stems glabrous; leaflets 13 to 21, 

 oblong, 5 to 8 mm. long, obtuse, glabrous ; spikes dense, 1.5 to 4 cm. long, 1 cm. 

 thick; calyx densely sericeous; petals rose-purple; fruit densely sericeous above. 



57. Parosela glabrescens Rydb. N. Amer Fl. 24: 106. 1920. 

 San Luis Potosl. 



Slender shrub 50 cm. high or taller, the stems glabrous or slightly pubescent ; 

 leaflets 15 to 21, elliptic, acute or obtuse, sparsely pilose at first ; spikes dense, 

 1.5 to 3 cm. long, 1 cm. thick; calyx silky-pilose; petals pale rose or nearly 

 white. 



58. Parosela lasiostachya (Benth.) Rose, Contr. U. S. Nat. Herb. 10: 107. 

 1906. 



Dalea lasiostachya Benth. PI. Hartw. 11. 1839. 



Dry hillsides, Mexico and Puebla. 



Slender shrub, 1 meter high, with reddish glabrous branches; leaflets 13 to 

 17, oblong or linear-oblong, 3 to 6 mm. long, glabrous; spikes 2 to 4 cm. long, 

 1.5 cm. thick ; calyx silky-villous ; petals rose or purple ; fruit densely villous. 



59. Parosela involuta Rydb. N. Amer. Fl. 24: 107. 1920. 

 Jalisco ; type from Rio Blanco. 



Slender shrub, 1 meter high or more, with glabrous branches ; leaflets 11 to 

 15, linear, 3 to 5 mm. long, glabrous ; spikes dense, 2 to 4 cm. long, 1 cm. thick ; 

 calyx densely silky-pilose ; petals pale rose or pink, or at first whitish ; fruit 

 densely pubescent. 



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

 Dalea eriophylla S. Wats. Proc. Amer. Acad. 17: 340. 1822. 



Coahuila ; type from the Sierra Madre, 40 miles south of Saltillo. 



Shrub, 10 to 20 cm. high, with tomentose branches ; leaflets 3, oblong or 

 obovate-oblong. 3 mm. long, densely white-villous ; spikes sessile, headlike ; calyx 

 densely villous ; i>etals rose-colored. 



61. Parosela greg'gii (A. Gray) Heller, Cat. N. Amer. PI. ed. 2. 6. 1900. 

 Dalea gregyii A. Gray, Mem. Amer. Acad. II. 5: 314. 1854. 

 Parosela leucosericca Rydb.*N. Amer. Fl. 24: 104. 1920. 



Sonora to San liUis Potosl, Puebla, and Oaxaca ; type from Bueua Vista, 

 Coahuila. Arizona. 



Low shrub with tomentose-sericeous branches; leaflets 5 to 11, obovate or 

 oval, 3 to 10 mm. long, densely sericeous-tomentose ; spikes dense, 1 to 3 cm. 



