RYDBERG: NOTES ON ROSACEAE 81 
P. palustris [Comarum L.]—are its narrowly ovate, long-acuminate 
petals.” This character would at once have suggested its relation- 
ship with P. saxosa, for the latter was originally described as having 
acute petals. Dr. Wolf, however, seems not to have seen the 
original description, for he only translates my short description 
into Latin. In my monograph I gave only abbreviated descrip- 
tions of the species not found within the United States and Canada. 
BREVIFOLIAE 
No change in this group has been made since my monograph 
was published. It consists of only two species, which Dr. Wolf 
includes in his RANUNCULOIDES. Dr. Wolf claims that a piece 
of the type of Nuttall’s P. brevifolia is in Lehmann's herbarium and 
that this has ternate leaves. Occasionally the basal leaves may 
have but three leaflets, but this is not the usual case. I have 
seen Nuttall’s type, and a duplicate is in the Torrey herbarium; 
in both the basal leaves are pinnate with five leaflets. 
RUBRICAULES 
In the North American Flora I recognized nine species. Of 
these Potentilla proxima was described as new. It is related to 
P. Macounii, but distinguished by the toothed, not deeply cleft 
leaflets. It is also of a much more southern distribution, found 
only in south central Utah and Arizona, while P. Macounii is 
found only in Alberta and Montana. The following specimens 
belong to P. proxima: 
Uran: Divide between Sevier and Beaver rivers, near Belknap 
Peak, July 28, 1905, Rydberg & Carlton 7369; also Aquarius Plateau, 
Aug. 6, 1905, 7479; mountains north of Bullion Creek, near Marys- 
vale, July 23, 1905, 7157 and 7153. 
ArIzoNA: Southern slope, San Francisco Mountains, August, 
1904, Cannon & Lloyd. 
My description of Potentilla rubricaulis Lehm. in my mono- 
graph was based principally on material collected in the Rocky 
Mountain region. The species was therefore described as having 
5-7 leaflets, while the original has only 3-5 leaflets. I saw my 
mistake and made a correction in the BULLETIN of the Torrey 
Club,* proposing the name Potentilla rubripes for the Rocky 
Sen toes a a A 
