308 THE JOURNAL OF BOTANY 



REVIEWS. 



Twenty-eighth Annual Report of the Watson Botanical Exchange 

 Club, 1911-1912. Vol. ii. No. 8. Cambridge: Printed by 

 J. Webb & Co., Alexandra Street. 1913. 



The above-named Eeport, which was issued in January of this 

 year, should have been noticed earlier. The referees of the Club 

 are the Revs. E. F. Linton, E. S. Marshall, W. Moyle Rogers, and 

 Mr. C. E. Salmon, and the distribution this year has been under- 

 taken by Mr. W. Barclay, of Perth. It speaks well for British 

 botanists that they should be able to provide material for two 

 annual publications such as this Report and that of the Botanical 

 Exchange Club, as well as contributions to this Journal, and in 

 neither do we indicate any nagging of interest. 



A note by the distributor may well be reprinted here, as the 

 caution is certainly needed with regard to critical species. The 

 danger referred to is practically unavoidable in connection with 

 distributed sets, even those most carefully prepared, and has un- 

 doubtedly led to confusion. The note runs : — " Mr. Moyle Rogers, 

 as referee for the Brambles, and Dr. Drabble, the referee for the 

 Pansies, wish that all the sheets representing a species should be 

 sent to them for examination, not merely a single sheet representa- 

 tive of the others. Where this is not done, their decisions refer 

 only to the sheets which they have seen, not to the others which 

 they have not seen. With this demand I sympathize, as there is 

 no doubt but that in these genera, and, I may add from my own 

 experience, in the Roses also, mixtures sometimes occur. In the 

 case of the Brambles and Pansies, for which Mr. Rogers and 

 Dr. Drabble are practically the sole referees, the request can 

 easily be complied with, but in the case of other genera, where 

 there are generally several referees, the same thing can hardly be 

 done, as it would certainly lead to considerable delay in the distri- 

 bution, and very probably to some confusion in the specimens. I 

 believe, however, that in the case of the Brambles the danger of 

 admixture is greater than in any of the other genera." 



Among the notes, those on Roses, by the distributor, hold an 

 important place on account of the special attention he has paid to 

 the genus, and the same may be said of the notes on Hieracium, 

 by Messrs. Linton and Marshall, each of whom describes at 

 length, but does not name, an Inverness-shire form which they 

 believe to be new. Mints occupy five pages, and their identifica- 

 tion gives rise to considerable discussion, in which Messrs. Bennett, 

 Marshall, and Salmon take a prominent part : the specimens dis- 

 cussed are mostly from Cornwall, sent by Mr. F. H. Davey, who 

 is the largest contributor for the year. Dr. Moss contributes 

 notes on Salicornia ; Carex has engaged the attention of Messrs. 

 Bennett and Marshall, the latter of whom has notes on Betula. 

 For the varied information given under these heads reference 

 must be made to the Report itself, for which application should be 

 made to the Honorary Secretary of the Club, Mr. George Goode, 



