306 
POTENTILLA FLABELLIFOLIA Hook.; Torr. and Gray. Fl. N. Am. 1: 
442. 1838. 
P. gelida American authors, not Meyer. 
This is near P. gelida and has generally been included therein, 
but differs in its much larger flowers, lighter foliage and a thicker 
creeping rootstock; it is best to regard it as at least a good variety. 
If the isolated range is taken in consideration, it is still better to 
regard it as a species. P. fladellifolia is found on the higher 
mountains of Oregon and Washington, while P. gelida grows in 
the Caucasus and eastern Siberia. 
Near /vigidae is another group, which may be called Brevifoltae, 
consisting of only twospecies. It differs from the preceding group 
mainly in two characters, viz.: pinnately 3-5-foliolate leaves and a 
very long and slender style, which is fastened a short distance be- 
low the apex of the achene. Both species are low, less than 
1% dm. high, from a thickish branched rootstock. 
PoreNTILLA Grayi Wats. Proc. Am. Acad. 8: 560. 1873. 
In this species the leaflets are only three, broadly obovate oF 
nearly obicular. The habit of the plant reminds one somewhat 0 {f, 
flabellifoha, but the middle leaflet is considerably stalked, showing 
that the leaf is pinnate with only one pair, rather than ternate. 
As the style is of the same form and the same place of attachment 
as in P. brevi ifolia, it is better to let the two constitute a group by 
themselves, especially as the habit and flower is nearly the same. 
P. Grayi has been collected only in the mountains around the 
Yosemite valley, California. 
PoTENTILLA BREVIFOLIA Nutt.; Torr & Gray, Fl. N. Am. 1: 442- 
This species has leaves with about two pairs of rounded 2—-3- 
cleft and crenate leaflets, which are rather small, only %-I cm. 
long. Lehmann included it in the Glandulosae on account of the 
habit, which a little resembles that of the group mentioned, and 
the fact that the plant is somewhat glandular puberulent. As stated 
before, the style is very slender, filiform, not basal, but fastened near 
the apex; the anthers are not flat, and plainly divided into two 
lobes, and the petals are emarginate. It is confined to the alpine 
peaks of Oregon. 
