492 Rypserc: NotTes oN ROSACEAE 
LONGIPEDUNCULATAE 
This section contains only one species, which Dr. Wolf makes a 
doubtful variety of P. gracilis. 
SUBJUGAE 
This group also contains only a single species, Potentilla sub- 
. juga. In my monograph, I included also in this group P. quin- 
quefolia, a disposition which Dr. Simmons in the Flora of Elles- 
mere Land rightly criticizes. This species I transferred in the 
North American Flora to the CONCINNAE group. 
SUBCORIACEAE 
This group contains three species, all Mexican. Dr. Wolf calls 
the group RANUNCULOIDEs and includes in it not only these three 
species, and the BREVIFOLIAE and SuBVISCOSAE groups, but also 
such diverse plants as Potentilla Townsendii, P. Palmeri, P. Ra- 
nunculus, P. flabellifolia, P. fragiformis, and P. Sierrae-Blancae, 
together with P. acuminata, which is a species with pinnate leaves 
related to P. saxosa. 
OBOVATIFOLIAE 
This group also is Mexican and Central American and consists 
of three species. The first of these, P. staminea Rydb., was until 
lately known only from the type collection by Ghiesbrecht. It 
has been collected also in Guatemala, in 1896, Seler 2753. If I 
am not mistaken, they are the same specimens that Dr. Wolf 
cites under P. haematochrus on page 226 of his monograph. A 
few years after its publication I referred to this species doubtfully 
Pringle 6890. This evidently was the reason why Dr. Wolf re- 
duced P. staminea to a variety of P. leptopetala Lehm. Pringle 
6890 is evidently much more closely related to P. leptopetala than 
to P. staminea. I have been inclined to refer Pringle 6890 and 
other material collected later in the same region to P. leptopetala, 
for they agree fairly well with Lehmann’s description (except as 
to the size of the petals). If, however, Lehmann’s figure in his 
Monographia, fl. 43, is correct, then the plant from which it was 
prawn must be of a different species from Pringle 6890 or else it is a 
freak or in an abnormal condition. I have seen neither the type of 
