RYDBERG: NoTES ON ROSACEAE 867 
besides D. agrimonioides (= D. arguta) and D. glandulosa until 
my revision in the North American Flora. Howell* admits 
Potentilla glutinosa, P. ciliata (= D. ashlandica), P. fissa, P 
glandulosa, P. Wrangelliana, P. reflexa, and P. rhomboidea. 
Pipert admits Drymocallis rhomboidea, D. pseudorupestris, D. con- 
vallaria, D. valida, D. glandulosa, D. glabrata, and D. Wrangelliana. 
Blankinship{, who belongs to the conservative school, admits 
Potentilla fissa and P. rhomboidea besides those found in my Flora 
of Montana, viz., Drymocallis arguta, D. convallaria, D. pseudo- 
rupestris, D. glutinosa, and D. glandulosa. Heller§ admits all the 
species included in my monograph of 1896. Hall || admits Poten- 
tilla lactea and includes Drymocallis viscida Parish under the name 
Potentilla glandulosa nevadensis. Jepson, who is very ‘‘con- 
servative,”’ on the contrary admits but one species, viz., Potentilla 
glandulosa. The plant described by him, however, is not P. 
glandulosa Lindley, but P. Wrangelliana. 
CHAMAERHODOS 
The American species of this genus has been regarded as 
identical with the Siberian Chamaerhodos erecta (L.) Bunge. 
Nuttall, one of America’s most acute botanists, was the first to 
see the difference between the American and the Asiatic plant, 
and named the former Chamaerhodos erecta parviflora. Pickering 
regarded it as a distinct species, but his name C. Nuttallii was 
not properly published before the appearance of my revision in 
the North American Flora. In Torrey and Gray’s Flora it 
appears as a synonym. The American plant has usually smaller 
flowers, the’ branches of the flat- -topped inflorescence are strongly 
ascending, the pedicels erect or nearly so, and even in fruit scarcely 
exceeding the flower in length, while in C. erecta they are ascending 
and much longer. 
New YorK BOTANICAL GARDEN. 
* Flora of Northwest America. 
} Flora of Washingt 
t Montana heel College Studies, 1, part 1 
t¢ Catalogue of North American Plants, edition 2. 
|| Botanical Survey of San Jacinto Mountains. 
{| Flora of Western Middle California. 
