ROSE FAMILY 



129 



and low, with broad greenish leaflets. Var. hallii Wolff, is a 

 low form with very green leaves and short petals scarcely- 

 exceeding the calyx. P. blaschkeana Turcz., is a large form 

 with leaflets cleft into narrowly ovate or oblong teeth, silky 

 and green above, white and tomentose beneath. — All of these 

 are common throughout the middle Sierra Nevada. 



6. P. dissecta Pursh. Similar to P. gracilis but smaller. 

 Petioles 2 in. or less long. Leaves somewhat silky but green 

 on both sides, the leaflets sharply cut-toothed. — Eastern slope 

 of the Sierra Nevada, reaching Mt. Lyell. 



7. P. brewed Wats. Leaves mostly in a basal tuft, on 

 petioles % to 2 in. long, densely white silky-pubescent on 

 both sides; leaflets 5 to 11, crowded along the common rachis, 

 ^ to % in. long, broadly wedge-shaped and deeply cut- 

 toothed. Flowers yellow, rather few. 



In typical P. brewcri the stems are nearly erect and the 

 flowers quite compact. In var. expansa Wats., the widely 

 spreading stems are upwardly curved and the flower-clusters 

 loosely expanded. The white, almost cotton-like covering of 

 the leaves contrasts well with the bright-yellow flowers. The 

 stems are 6 to 18 in. high. The variety is common from 

 Snow Flat and Clouds Rest to the crest of the Sierra Nevada. 

 The type locality of the species is Mono Pass. 



8. P. glandulosa var. nevadensis Wats. Leaves 

 3 to 10 in. long, on petioles 1 to 4 in. long, those 

 toward the top gradually smaller, soft-pubescent 

 and somewhat glandular, not tomentose or cot- 

 tony; leaflets 5 to 9, not crowded, from less than. 

 l / 2 to \y 2 in. long, obovate, regularly sharp- 

 toothed. Flowers yellow, in an open cluster. 

 (Drymocallis glandulosa monticola Rydb.) 



The stems of this plant are usually erect, y 2 to 

 2 ft. high, and bear several leaves in addition to 

 the basal cluster. It is common up to 11,000 ft., 

 where, however, it becomes much dwarfed. Vari- 

 ous forms have been named but only the var. 

 reflexa Greene, with reflexed petals and calyx- 

 lobes, can be satisfactorily separated. 



9. P. lactea Greene. The white or cream-colored flowers 

 constitute the only character by which this may be certainly 

 distinguished from no. 8, and even these often turn yellow in 

 drying. The stems are slender and erect and the petals do 

 not much exceed the calyx. It grows in open places in the 

 pine forests from about 4000 to 9000 ft. alt. In the lower part 



