Vol.1] Hall. — Botauical Survey of San Jacinto Mountain. 87 



ovate, the free portion h line long, entire or toothed; leaves 

 villons, pinnate; the lower 6-10 lines long, with about 7 pairs of 

 crowded leaflets; the upper much shorter, bract-like, with 1-5 

 pairs of leaflets; leaflets 1 line long, divided to the base into 2 or 

 3 oval segments: flowers sometimes solitary on the ends of the 

 stems but usually 3 to 6 in a simple raceme; pedicels slender, 

 2-5 lines long: hypanthium saucer-shaped, l|-2j lines wide; 

 bractlets narrow; sepals twice as long, narrowly ovate, acute: 

 petals white, oblong, obtuse or acutish, narrowed at base but not 

 clawed, a little longer than the calyx (about li lines long) : 

 stamens about 20; fllaments filiform: pistils several; style 

 laterally attached, slightly longer than the glabrous akene. 



Growing from the cracks of rocks, Tahquitz Peak, San Jacinto 

 Mt., California, at 8000 ft. alt., Aug. 5, 1901 (H. M. Hall, no. 

 2611). The type is in the Herbarium of the University of Cali- 

 fornia. 



Nearest to P. Kingii Greene, from which it is most readily 

 distinguished by its small size, by the villous and glandular 

 pubescence, and by the narrow petals. 



Specimens have been distributed under the name of HorkeUa 

 callida Hall, but on more carefully considering the validity of the 

 genus Horkelia we have come to the conclusion that it cannot be 

 satisfactorily separated from Potentilla and have therefore des- 

 cribed our plant under the latter genus. 



Potentilla Clevelandi Greene, Pitt. i. 102 (1887). Horkelia 

 Clevelandii Rydb., Bull. Torr. Club xxv. 54 (1889) and 

 Monogr. N. A. Pot. 120 (1898). 

 Rather common throughout the Lower Transition Zone; 



usually in meadows. (Nos. 648, 2291.) 



Potentilla glandulosa Nevadensis Wats. Bnjmocallis glandulosa 



monticola Rydb., 1. c. 199. 



Collected in the Lower Transition Zone on all sides of the 

 mountain but the east. (Nos. 2039, 2204, 2546.) 



Potentilla gracilis Dougl. P. Blaschkeana Turoz. 



Found only in moist soilnear Strawberry Valley. (No. 2296.) 



