1896 | ROSA, AMERICANA 17 
artificial group formed, in part, at the expense of R. pisocarpa 
and &. dlanda, and perhaps partly of one or of several other 
species as yet incompletely known. As for my R. Fendleri of 
New Mexico I have examined too little material to be actually 
sure that it is an autonomous type. 
For elucidating the problem of R. Fendleri a number of 
investigations need to be made. The botanists who explore the 
vast region of the Rocky mountains should make careful obser- 
vations as to the appearance of the bushes. They should 
examine the variations which accompany the dwarf and giant 
states, and obtain abundant, well-selected material from which 
to form a trustworthy opinion of the armature of the different 
axes. In short, in my opinion, &. Fendleri remains as an obscure 
species, not capable of being clearly defined in the dichotomous 
table which I have added at the close of the paper. 
Rosa Woopsi Lindl. 
. Woodsii was established upon a plant cultivated in the 
Garden of the Horticultural Society of London. It was sup- 
posed to have come from the basin of the Missouri. I have 
authentic specimens in my herbarium, and have seen others in 
the Lindley herbarium. One perceives how much cultivation 
ordinarily modifies the appearance of a species, and how much 
a description drawn from a single cultivated plant can introduce 
uncertainty when there is an attempt to apply such a descrip- 
tion to the wild plant. This is certainly the case with the 
description of R. Woodsit. 
I here wish to digress a moment in reference to this. Wat- 
son established, within the CINNAMOME# which he described, two 
principal divisions. The first is characterized by the prickles all 
scattered, and includes R. acicularis, R. Sayi, R. blanda, and R. 
Arkansana ; the second is distinguished by the paired prickles, and 
includes R. Nutkana, R. pisocarpa, R. Californica, R. Fendleri, and 
R. Woodsii. This last division is subdivided into two groups, one 
of which has the sepals all entire, and the other with the outer 
Sepals ordinarily having one or several lateral segments. The 
