198 MR. J. G. baker's MOKOGEAPH of BRITISH ROSES. 



of a correspondence of many years' duration, and, especially from 

 tlie first of the three, whose enthusiasm in the cause of Mosa has 

 been attested by an elaborate monograph of the French species, 

 illustrated by a published fasciculus of specimens beautifully se- 

 lected and preserved, I have received a liberal supply of authen- 

 ticated Roses and a free communication of the notes suggested to 

 them by the study of the British forms which I have sent them. 



In quoting continental synonyms, over and above the original 

 authority for a name, I have restricted myself almost entirely to 

 the most recent works in which the Hoses of the adjacent coun- 

 tries of the Continent are described, of which the following are 

 the principal. 



Deseglise^ ^ Essai monographique sur cent cinq especes de Bosiers 

 appartenant a la Flore de la France,' Angers : 1861. * Eeviaion de 

 la Section Tomentosa du genre Rosa' Angers : 1866. 



Meuter^ * Catalogue des Plantes vasculaires qui croissent natu- 

 rellement aux environs de Geneve.' 2nd edit. Geneva: 1861. 



Gr enter ^ * Flore de la Chaine Jurassique,' part 1. Paris and 

 Besangon : 1865. 



Dumortier, ' Monographie des Roses de la Flore Beige,' Gand : 



1867. 



I have also quoted regularly the set of specimens, 135 in num- 

 ber, deposited byAVoods at the Linnean Society in authentication 

 of his paper, the published fasciculi of Deseglise, the Herbarium 

 Normale of Fries, and my own. 



As this paper may reach collectors isolated in the country, I 

 will venture to add a counsel upon the character of specimens 

 taken for drying. To illustrate a Rose so that a definite opinion 

 can be formed upon it, it is necessary, in addition to a flower- 

 ing branch, such as no one omits to gather, to have well-deve- 

 loped fruit ; so much the better if taken both at the stage when it 

 is fully grown but still green, and also after it has partially ripened, 

 and to have also a portion of woody stem that will show clearly 

 the well-developed prickles ; and it is also better to take, in the 

 same way as in Buhus, a portion of a shoot bearing leaves only, 

 because it is only upon these barren branches that the leaves 

 reach their full development. 



In the diagnoses it will be seen that I have laid great stress 

 upon the character of the prickles. Here, as in Bulvs, I believe 

 that we get some of our best contrasts of character by separating 

 the forms in wliich the prickles are scattered and uniform (as in 



