70 MR. J. G. BAKER: A REVISED 
and in the fruit and seeds. It also differs from Hmmenopterys 
in its persistent stipules. 
DUNNIA SINENSIS, Tutcher, species unica. (Herb. Hongkong 
Bot. Gard. n. 910.) 
This plant was found by Mr. Dunn’s native collector at 
Sanning, Kwangtung, last year (1904). The specimens were in 
fruit only. 
17 February, 1905. W. J.T. 
A Revised Classification/of Roses, 1905. 
By Joun GILBERT Baker, F.R.S., F.L.S. 
[Read 16th February, 1905.] 
THREE valuable Rose-monographs which have recently been 
published to a large extent fill the gap which was left by 
the long-expeeted monograph of the late Professor Crépin 
never having been completed. These are Dr. Keller's account 
of the Roses, in Ascherson & Graebner’s ‘Synopsis of the 
Flora of Central Europe’; the very careful and elaborate 
account of the French Roses, in Rouy & Foucaud's new * Flora 
of France’; and Dr. Focke’s description of the Roses, in the 
third edition of Koch’s * Synopsis,’ now in course of publication 
under the editorship of Dr. Hallier. Reference should also be 
made to Dr. Christ's book on the Swiss Roses, and his account 
of the Oriental Roses in the supplementary volume of Boissier's 
‘Flora Orientalis, and to Burnat & Gremli's * Roses des Alpes 
Maritimes, and its Supplement, and to Burnat’s * Flore des Alpes 
Maritimes.’ The consensus of opinion in all recent investigators 
of the genus points to the conclusion that a great deal of the 
difficulty that arises is due to the facility with which Roses 
hybridise. I have therefore drawn up the following Catalogue 
of the species, varieties, and principal hybrids, to replace that 
which I contributed to the ‘ Gardeners’ Chronicle’ twenty 
years ago, and was printed in that journal, August 15, 1885, 
p. 199, and reprinted in the * Journal of Botany’ for the same 
year, pp. 281-286. 
