I 



in the leaves, which are divided to near the base into Hnear 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. 

 Blaschkcana in the general habit and the size of the flowers, and 

 may be known under the name : 



POTENTILLA FLABELLIFORMIS CTENOPHOKA n. 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 FASTiGi,ATA Nutt. ; Torr. & Gray, Fl. N. Am. i : 



440. 1840. 

 Potentilla gracilis fastigiata Wats. Proc. Am. Acad. 7: 557. 



1873. 



This perhaps comes nearest to P. pulcharima , resemblmg it m 

 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 crowded cyme. 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-lanceolate, shorter thanthe broadly 

 lanceolate sepals; petals yellow, obcordate, scarcely exceeding 

 the sepals. 



It has .gone under the names of P. gracilis flabdUfonnis and 

 fastigiata. 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. Blaschkcana and l\ Niiftallii, and sometimes that of /'. 



