82 RYDBERG: NOTES ON ROSACEAE 
Mountain plant. Dr. Wolf has called attention to an important 
difference overlooked by me, viz., that the style in P. rubricaulis 
Lehm. is much thickened and glandular at the base. He therefore 
includes it in the MULTIFIDAE group. Dr. Wolf also reduces 
P. minutifolia and P. saximontana to varieties of P. rubripes. 
As far as P. saximontana is concerned it can not be kept distinct 
from P. rubripes. I have come to that conclusion by the aid of 
material sent me by Mrs. M. E. Soth and others from the Pikes 
Peak region. Concerning P. minutifolia I am still in doubt. If, 
however, the species are united, the name of the species should not 
be P. rubripes, which name Dr. Wolf adopts, because that is 
the latest of the three, being 10 years more recent than the other 
two, which were published on the same page, P. minutifolia pre- 
ceding P. saximontana in space. 
CANDICANTES 
This group contains only one Mexican species, which Dr. 
Wolf includes in the MULTIJUGAE group. 
LEUCOPHYLLAE 
In the North American Flora this contains 12 species, of which 
Potentilla lupina, P. argyrea, P. viridior, and P. Bruceae are pro- 
posed as new. The first two were based on material formerly 
included in P. Hippiana. P. lupulina resembles much P. Hip- 
piana, but the pubescence is coarser, less shining, and more gray, 
the bractlets are small and the sepals are acuminate as in P. effusa. 
It is known from only the type locality and vicinity, and all the 
material seen was collected by Mr. Frank Tweedy. It is rep- 
resented by his numbers 3214 and 3215, of which the latter was 
assigned as the type. 
P. argyrea also is related to P. Hippiana, but differs in the 
dense inflorescence, dull tomentum, and smaller flowers. The dense 
inflorescence suggests somewhat certain species of the MULTIFIDAE 
group. One of the specimens was originally labeled P. penn- 
syluanica. Besides the type, the following specimens belong here: 
Nortu Dakota: Willow City, July 18, 1891, Lee 210. 
MAniTosa: Britte, June 27, 1906, Macoun & Herriot 69836. 
(This specimen is, however, somewhat doubtful.) 
