HISTORICAL SKETCH. 7 



already recognized by Smith, although the names of several 

 are corrected, and the characters very much improved ; they 

 are M. carpinifolius (which is not that so named by the 

 German authors, but seems to be very closely allied to 

 R. Grahowskii), and R. macrojjhyllus. 



In 1837 Professor David Don drew up a very concise 

 account of these plants for Dr Macreight's Manv/xl of British 

 Botany. 



In 1841 Leighton published his Flora of Shropshire, in 

 which he endeavoured to determine the plants of Nees von 

 Esenbech, Lindley, and Borrer, by transmitting specimens 

 of the Shropshire Brambles to each of them, and obtaining 

 in return their remarks upon the plants. The results are 

 not as satisfactory as might have been expected; for the 

 opinions received are very contradictory, and apj^ear some- 

 times, especially in the case of the first-named author, not 

 to accord with the descriptions previously published. In 

 18-18 Leighton made a series of most valuable remarks upon 

 some of the same plants in the third volume of the Phytolo- 

 gist. Unfortunately his intention of sending further papers 

 on the subject was not fulfilled. 



In 18-47 Mr Edwin Lees communicated the specific cha- 

 racters of the species, as known to him, to Steele's Handbook 

 of Field Botany ; and more recently described many of them 

 in his own Botany of Malvern, ed. 2 (1852). 



Dr Thomas Bell Salter inserted valuable remarks upon 

 these plants in the Anncds of Natural History (Ser. 1. xv. 

 and xvi. in 1845), and in the Phytologist (ii.). He gave 

 a complete synopsis of his views in the Botanical Gazette 

 (ii. in 1850), and repeated it, with little or no alteration, in 

 Hooker and Arnott's British Flora (ed. 6. in 1850), and 

 i'romfield's Flora Vectensis (1856). 



