7 
in the leaves, which are divided to near the base into linear seg- 
ments. They are also white-tomentose beneath and densely 
silky above. There are two forms of this species; the one with 
narrow linear more or less revolute lobes and smaller flowers re- 
sembles Lehmann’s figure in Hooker's Fl. Bor. Am., and is there- 
fore taken as the type. The other somewhat approaches P?. 
Blaschkeana in the general habit and the size of the flowers, and 
may be known under the name : 
# POTENTILLA FLABELLIFORMIS CTENOPHORA MN. V. 
_ Stem stout; leaflets less deeply divided into somewhat broader 
divisions, which are not at all revolute. Corolla over 15 mm. in 
diameter, petals broadly obcordate, much longer than the sepals. 
Both forms are fairly common from Wyoming and California 
to British Columbia and Saskatchewan. 
POTENTILLA FASTIGIATA Nutt. - bor. & Gry, Fi NN. Am. ft; 
440. 1840. 
Fotentilla gracilis fastigiata Wats. Proc. Am. Acad. 7: 557. 
1873. 
This perhaps comes nearest to P. pulcherrima, resembling it in 
the form of the leaflets and the size of the flower, but it is a smaller 
plant, less than 3 dm. high and with a rather crowdedcyme. The 
pubescence of the leaves is also different, long, silky and with very 
little tomentum beneath. It is a rather rare plant, extending from 
Wyoming and California to British Columbia and Saskatchewan, 
~ POTENTILLA PECTINISECTA N. Sp. 
Stem slender, 3-4 dm. high, ascending, finely strigose or hir- 
Sute; stipules ovate, often toothed; leaves on slender petioles, 
digitate, of 5—8 leaflets, apressed-silky on both sides and sometimes 
slightly tomentulose beneath ; leaflets obovate, deeply pectinately 
divided into oblong or linear segments ; cyme rather dense; calyx - 
appressed-silky ; bractlets linear-ianceolate,shorter thanthe broadly = 
lanceolate sepals; petals yellow, obcordate, scarcely exceeding © 
the sepals. 
It has gone under the names of P. gracilis flabelliformis and — 
Sastigiata. It resembles P. fastigiata in general habit and pubes- — 
_ cence, but is more slender. The form of the leaflets is most like 
that of P. Blaschkeana and P. Nuttallii, and sometimes that of 1 
