RYDBERG: Notes oN ROSACEAE 497 
Potentilla fastigiata Nutt. was transferred from the GRACILES 
group. Although it connects the CoNCINNAE with this group and 
with the CANDIDAE, and has a more erect stem than the other 
species, I think, after all, that it should be placed here and that it 
has its nearest relative in P. concinnaeformis Rydb. Dr. Wolf 
retains it in the GRACILEs group and associates it with P. tomen- 
tosa, P. oaxacana, and P. Nuttallii. Its nearest relative outside 
the CONCINNAE is P. candida Rydb., and a few of the specimens 
cited by me under the latter in my monograph belong to P. fasti- 
giata instead. It is evidently unknown to Professor Nelson, for 
under P. gracilis, he has the following remark: ‘(This may be a 
composite species; as here used it includes the following, which 
are not readily discriminated: P. fastigiata Nutt.; P. pulcherrima 
Lehm.; P. Blaschkeana Turcz..... )” The leaves of P. fasti- 
giata are silky-villous with rather long hairs on both sides, only 
very slightly tomentose beneath. 
A species related to thisand P. concinnaeformis is described in 
the North American Flora under the name of Potentilla Hasset. 
It differs from P. fastigiata in the broader, broadly obovate leaf- 
lets and the oblong instead of linear-lanceolate bractlets, and from 
P. concinnaeformis in the dense many-flowered inflorescence, the 
densely pubescent stem, and the oblong bractlets. Besides the 
type given in the North American Flora, I have seen the following 
specimens, referable to it: 
CALIFORNIA: Head of Stanislaus River, 1903, Hall & Chandler 
4778. 
There has been no change made in Potentilla concinnaeformis, 
P. oblanceolata, and P. bicrenata since my monograph, except that 
the range of the last one has been extended to Wyoming, where 
it has been collected by Professor Nelson. Dr. Wolf admits all 
three as species, although he had not seen specimens of any of 
them. Concerning the reduction of P. obovatifolia Rydb. to a 
variety of the first one, see my remarks on page 493. 
A further study of P. concinna and its variety divisa brought to 
light facts that seemed to me sufficient to warrant the raising of 
the latter to specific rank. 
In the North American Flora, I transfer Potentilla quinquefolia 
Rydb. to this group. In my monograph I had placed it with P. 
