247 
tinct species. It differs only in its more slender habit, a slightly 
denser pubescence, somewhat shorter sepals and a more contracted 
and few-flowered cyme, a modification perhaps due to the higher 
altitude. Intermediate forms are not rare. It is common inthe 
higher Sierras of California, Nevada and Arizona. 
POTENTILLA LACTEA Greene, Pittonia 3: 20. 1896. 
P. glandulosa lactea Greene, F\. Frans. 65. 1891. 
I can not pronounce on this, as I have not seen specimens 
The description points toward P. glandulosa, except in the color 
of the petals, which are described as white. 
PoTENTILLA WRANGELLIANA Fish. & All. Anini. Bot. Ind. Sem. 
Hort. Bot. Petrop. 1840: 54; Ann. Sci. Nat. (II.) 16: 57. 1841. 
P. rupestris Presl, Epim. Bot. 198. 1849. Not L. 
P. glandulosa Am. Auth., as Brewer & Wats. Bot. Cal. 1: 178, 
and Greene, FI. Frans. 65, mainly. 
This species most resembles P. g/andulosa, but differs by the 
larger, more decidedly double-serrate leaflets, the more leafy 
cyme, which is dichotomously branched, with a short-pedicelled 
flower in the forks, but principally by the sepals, which are more 
Veiny, oval (not ovate-lanceolate), and abruptly contracted into a 
Small point, almost mucronate. The common form is inclined to 
become glabrate. Lindley’s figure of P. glandulosa incisa in Bot. 
Reg, 23: pl. 1973, resembles this species as to the leaves, but the 
cyme and the sepals are those of P. glandulosa. P. Wrangellana 
is common in California and Oregon, extending into Washington. 
P. Oregana Nutt. Mss., is a form of this species, but the stem is 
glandular and very pubescent with long villous hairs. Torrey and 
Gray, Fl. N. Am. 1: 446, place it as a synonym of P. glandulosa, 
but its habit and sepals show a close relationship with P. Wrangel- 
hana. 
POTENTILLA REFLEXA Greene, Pittonia 3:19. 1896. 
P. glandulosa reflexa Greene, F1. Frans. 65. 1891. 
This somewhat resembles P. glandulosa. The principal differ- 
ence given by Prof. Greene is that petals and sepals are reflexed 
in anthesis. As far as I know the species, the following charac- 
ters may be added: thicker, darker leaves with broader and shorter i. . 
