SHOUT NOTES 115 



There were some hundreds of plants, with at least fifty or sixty 

 flowering-sjDikes, massed in an area of several square yards. Mr. C. 

 E. Salmon, who conhrms the determination, informs me that it is 

 a non-European species, a native of Caucasia, Trans- Caucasia and 

 Armenia, and it consequently must have been introduced. Both my 

 sister and I feel reasonably certain that it was not deliberately planted, 

 and no non-European trees or shrubs were observed in the woods. 

 The nearest houses are about two hundred yards above, on the edge of 

 the wood, and are of the usual small industrial type. I should not 

 have considered the species sufficiently decorative for garden purposes, 

 but it is included in Cassell's Dictionary of Gardening and Robin- 

 son's English Flower Garden. I have never seen it in cultivation, 

 neither has Mr. Salmon. Mr. Gr. C. Druce informs me that A. 

 maxima was recorded from Scotland as a planted alien in the Bot. 

 Exch. Club Report for 1908.— E. B. Bishop. 



REVIEW. 



Sveriges Hoscb. By S. Almquist. Stockholm, 1919. 



In this work the author presents the results of his lifelong study 

 of roses in the form of a remarkable work involving an entirely new 

 classification of the genus JRosa, based chiefly on the form and serra- 

 tion of the leaflets of the flowering shoots. Whilst studying the 

 diiferent sections of Hosa Afzeliana Fr. (=i?. glauca Vill. -fi^. 

 coriifolia Fr.), the author found that there were types of species 

 running through all, or most, of the groups of roses. These types 

 include species belonging to different groups, but nevertheless essen- 

 tially alike in the form and serrations of the leaflets, the prickles, 

 colour, etc. Each special type normally displays two species, one 

 having leaves with a well-developed waxy " bloom " and the other with 

 the bloom more or less weakly shown ; each of these species in turn 

 may occur with smooth and with hairy leaves. 



According to the author the total number of such special types is 

 31, yielding in Sweden 224 species ; to determine them a concise key 

 illustrated by clear line-drawings is provided, and a synoptic tabular 

 statement of groups and types shows very clearly the relationship of 

 the species. 



Naturally enough, the catalogue of the Swedish species occupies 

 the greatest part of the book ; nevertheless, in the account of the 

 types and their distribution, many foreign species are named. 



Amongst the novelties of classification one notes that R. coriifolia 

 Fr. and R. dumetorum Thuill are regarded merely as single species of 

 the acutiformis and cuneatula types. Further, all species with 

 subfoliar glands (other than on the midrib), usually assigned to the 

 AfzeliancB or Oanince, are transferred to the JRuhiginoscB and 

 Agrestes ; with the same groups are also classified species such as 

 Jundzilliana, rlKstica, uriensis, tomentella, etc., sometimes treated 

 by other authors as forming special groups. JR. ruhrifolia (auct.) (the 

 oldest name of which, R. glauca Pourr., is reinstated) is separated 



