Vol. 37 * No.9 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
—— 
OCTOBER, tg1o0 
Notes on Rosaceae — IV 
Per AXEL RYDBERG 
POTENTILLA (continued)* 
PERMOLLES 
This group contains only one species, Potentilla permollis 
Rydb. Dr. Wolf reduced this to a variety of P. Blaschkeana, 
evidently without having seen any specimen. It has a pubescence 
wholly unlike any species in the GRACILEs or the NUTTALLIANAE 
groups, and although somewhat related to these, I regard it as 
distinct enough to be placed in a group by itself. Piper, who is 
rather conservative in his treatment, regards it as distinct in his 
Flora of Washington,t and cites three specimens. 
CANDIDAE 
This group contains six species, of which four are proposed as 
new. These are Potentilla Elmeri, P. Pecten, P. subvillosa, and 
P.comosa. Of these, the last one is related to P. Bakeri, and the 
rest to P. candida. Potentilla Pecten stands nearest to that species 
and differs mainly in the leaves, which are green above, and in the 
stem, which bears only a few small leaves. The following speci- 
mens belong to P. Pecten: 
Montana: Bridger Mountains, 1897, Rydberg & Bessey 
4377 - 
Wyominc: Cokerville, 1898, Aven Nelson 4647; Union Pass, 
Aven Nelson 043. 
*See Bull. Torrey Club 37: 375-386. 
Contr. U. S. Nat. Herb. vol. 11. 
“The BULLETIN for September, 1910 (37: 443-486) was issued 5 O rgro.] 
487 
