46 NEW PUBLICATIONS. 



Leptogium tremelloides, L., probably on the authority of Nyhnnder, 

 but the plants so named by Taylor in the collection of the British 

 Museum, are certainly referal)le to C. furvum, Ach., and there is good 

 reason for believing that Taylor Avas well acquainted with Borrer's spe- 

 cies. If Dr. Nylander be correct in asserting that C. dermatinnm, Ach., 

 is only a state of Leptogium tremelloides, L., the probabilities are 

 that Borrer's species is not the true plant of Acharius. Lecidea Gagei 

 (E. B. 2580) is included among the synonyms of Lecidea laevigata, Nyl. 

 We would, however, refer the author to the small specimen attached to 

 the original drawing of ' English Botany,' which consists solely of sper- 

 magonia in an undeterminable white, crustaceous thallus ; moreover 

 Salwey's name of Lecidea Taylori (185.3) should stand, in preference 

 to L. Icerigata, Nyl. (1857), both in justice to its proposer, and in 

 honour of an old British botanist. We notice a few other instances in 

 which the prior claims of British botanists appear to have been over- 

 looked. These, however, are small matters which in no way detract 

 from the usefulness of a book which we heartily commend to the notice 

 of Lichenologists, 



More de la Ghahie Jnrassiqne. Par M. Ch. Grenier. Paris : Pre- 

 miere partie, 1865 ; seconde partie, Juin 1869. (Pp. 1001.) 



In England, the best local Floras recently published have for their 

 objects the elucidation of the topographical distribution of species, 

 their range in altitude, the influence upon them of local or climatic 

 conditions, their mode of introduction, history, and associations. It 

 is but rarely that descriptive matter is introduced, this being foreign 

 to their main object, and left to treatises on the genei'al flora of Great 

 Britain. 



The geographical aspect of vegetation has probably been investigated 

 in England to a greater extent than in any other country. Our insular 

 condition, dense population, and the small area of our field of observa- 

 tion, have all tended to render records of localities very numerous and 

 generally dittused, whilst the labours of Mr. H. C. Watson and others 

 have enabled us to accurately group them, and easily master the whole 

 result of so much investigation. 



On the Continent, local Floras are usually of a different kind. Look- 

 ing far less at the geographical part of the rpiestion, their authors con- 



