﻿of North American Rosaceae. 55 



v Horkelia puberula (Greene). 

 Potentilla pubenda Greene, Pittonia, i: 102. 1887 



v Horkelia platypetala, n. n. 



Horkelia Parryi Greene, Bull. Cal. Acad. 2 : 4*6^, partly, as to 

 description. 1887. Not H. Bolanderi var. Parryi Wats. 



Dr. C. C. Parry distributed, in 1887, specimens of this species 

 under the name Horkelia Bolanderi var. Parryi Wats. As Dr. 

 Watson's description of that variety is very short and in no essen- 

 tial particular disagrees with the present species, Prof. Greene 

 was misled and described it as a new species under an old name. 

 believing that he only made a new and better description. The 

 original specimen from which Watson's description was made is at 

 the Gray Herbarium and has narrow petals like those of H. Bo- 

 landeri, while in H platypetala the petals are broadly obovate. 



^Horkelia tenella (Wats.). 



Horkelia fuse a var. tenella Wats. Bot. Cal. 1 : 181. 1876. 

 In my opinion, this is a good species, 



Horkelia daucifolia (Greene). 



Horkelia congesta Brew. & Wats. Bot. Cal. i : 1 8 1 . In part. 

 1876. 



Potentilla daucifolia Greene, Pittonia, 1 : 160. 1888. 

 Potentilla congesta var. lobata Lemmon, Bull. Torr. Club, 16 : 

 221. 1889. 





Horkelia laxiflora (Drew). 



Potentilla laxiflora Drew, Bull. Torr. Bot. Club, 16: 15 



1889. 



Horkelia Howellii (Greene) 



Potentilla Hozvellii Greene, Pittonia, 1 : 104. 1887. 



\/ Horkelia pinetorum (Coville). 



Potentilla purpurascens pinetorum Coville, Proc. Biol. Soc. 



Wash. 7 : yy. 1892. 



It is nearest related to H. purpurascens Wats., but without 

 doubt is a good species. 



