PoTENTiLLA Blaschkeana Turcz ; Lehm. in Otto, Gart. & Blu- 



menz. g: 506. 1853. 



Potentilla gracilis most authors, not Dougl. 



This differs from P. gracilis in stouter habit, ascending branches, 

 larger flowers and broader leaflets, which are obovate, deeply^ 

 toothed or cleft into ovate or oblong teeth, silky and green above, 

 silky and tomentose beneath. It must be admitted that this 

 species is near to the preceding. It was merged therein by Wat- 

 son, but it is evidently not so near P. gracilis as is P. pnlcheirima, 

 which differ only in the form of the teeth. 



P. Blaschkeana is common from California to Wyoming and 

 northward as far as Kodiak, off Alaska. 



Potentilla Candida n. sp. 



Potentilla gracilis var. Wats. King's Exp. 5: 88. 1871. 



Stem low, 1-2 dm. high, densely white silky-strigose ; stipules 

 ovate, entire, nearly i cm. long ; leaves on rather short petioles, 

 densely silvery silky on both sides, digitate; leaflets 7-9, obovate 

 in outline, 2-4 cm. long, rather thick, deeply incised or cleft into 

 large oblong teeth ; cyme rather dense; flowers about i cm. in 

 diameter; calyx white-silky ; bractlets lanceolate, much shorter 

 than the ovate sepals ; petals yellow, obcordate, a little exceeding 

 the sepals. (Plate 287.) 



It resembles mo.st a depauperate P. Blaschkeana, and differs 

 mainly in the pubescence which is very dense on both sides of the 

 leaves, and silky ; tomentum none. 



Nevada: S. Watson, no. 337, 1868 (type). Montana: F. 

 V. Hayden, i860. Wyoming: T. C. Porter, 1873. 



Potentilla flabelliformis Lehm. Stirp. Pug. 2: 12. 1830. 



Potentilla gracilis flabelliformis Nutt. ; Torr & Gray, Fl. N. Am. 

 1 : 440. 1 840. 



This stands nearest to P. Blaschkeana, but I think it is without 

 doubt a good species. I have had the opportunity to watch the two 

 in the field and found them often grow together, but never found 

 an intermediate form, and in all the collections that have gone 

 through my hands there are only the specimens from one locality, 

 where I am in doubt to which species to refer them, and these 

 may be hybrids. P. flabelliformis differs from the related species 



