FLORA OP' THE CAPP: REGION. I47 



smooth, margined with a wing of variable width that is 

 generally broader than the akene, irregularly lacerate and 

 ciliate : awns two, as long as the akene and spreading. 



This plant is common on the high mountains of the 

 cape region and sometimes grows in deep cafions at lower 

 elevations. The leaves are often coarsely and doubly 

 serrate and white hirsute below. The wing of the akene 

 is sometimes entire, and often narrow. Some of the 

 marginal ones may be wingless, and are then tubercu- 

 late. 



317. Heterospermum Xanti Gray. — La Paz, San 

 Jose del Cabo and in the mountains. 



318. BiDENS nudata Brandegee, Zoe, i, 309. Mount- 

 ains of the interior. 



319. BiDENS refracta Brandegee, Zoe, i, 310. Mi- 

 raflores. 



320. BiDENS TENUisECTA Gray. — Foothills of the 

 mountains near Agua Caliente. 



321. BiDENS Lemmoni Gray. — High mountains. 



322. BiDENS PiLosA L. — Mountains of the Cape Re- 

 gions. 



323. BiDENS iiETEROPHYLLA Ort. — High mountains. 



324. Galinsoga parviflora Cav. Plants small and 

 destitute of pappus. — Sierra de la Laguna and Sierra de 

 San Francisquito. 



325. Perityle crassifolia. Annual, stems ribbed, 

 branching Y^ m. high, densely arachnoid-tomentose, the 

 glands masked by the pubescence, but causing the thick 

 leaves to glisten in the sun much like Afesenibryantheum 

 cRqiiilaterale: leaves thick, reniform or cordate-ovate, 

 crenate, on petioles of the same length: heads large, 

 many flowered, rays white, conspicuous; akenes curved, 

 pubescent on the sides, at least the outer ones ciliate on 



