26 BOTANICAL GAZETTE [JULY 
Not yet having received authentic specimens of R. Sonomensis 
I can only judge of its value by its description. From a careful 
examination of the specimens of R. spithamea which have come 
to me, and among them those which have been obtained from 
Mr. Greene, I am inclined to think that R. Sonomensis is but a 
variety of Watson’s species. The future will show whether my 
supposition is correct or not. 
In my Prodromus I have spoken ofa rose to which I had once 
given the name R. Bridgesii, and which I have merged with R. 
Californica, That rose which I described, and of which I have 
seen new specimens from the herbaria of Asa Gray, DeCandolle, 
and the Jardin des Plantes of Paris, may well be specifically 
identical with R. spithamea. If its identity is recognized, the 
name X. Bridgesit will have to replace R. spithamea. 
X. spithamea is noted by Watson in northern California, in 
Trinity county, and in the middle of the state at New Alameda | 
and near San Luis Obispo. Mr. Greene notes it in Yuba county, 
and his R. Sonomensis in Sonoma county. To these localities 
should be added Fresno county, in the Sierra Nevada, where 
Engelmann obtained the species in a Sequoia forest. I have : 
a specimen obtained by Cuming, but without indication of — 
locality. 
species is exclusively Californian. 
Rosa ACICULARIS Lindl. 
The American R. acicularis has been long confused among the 
varieties of R. blanda. Borrer, in 18 33, in the first volume of : 
Hooker’s Flora Boreah- Americana, had been on the point of sepa- — 
rating it from R. b/anda. According to Watson, Schweinitz had — 
described this rose in 1825 under the name of R. Sayi. In 1876 
Some specimens from San Luis Obispo, which I have seen in’ 
the herbarium of Asa Gray, often show numerous glandular- . 
tipped bristles in. the intervals between the pairs of paired — 
prickles. It should be remarked that these bristles also appear 
(but rarely) in R. Californica. There is reason to believe that R. 
spithamea will be discovered in other localities, Perhaps the 
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