374 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 



The Vegetation of Yorkshire. Its History and Associations 

 on the lines of Botanical Survey, based on the Geologic and Phyto 

 palaeologic remains : being an examination into the sources, the 

 presence or passing of the Floristic Constituents— their When and 

 How and Where : being also a Supplement to previous " Floras " of 

 York, and a list of the Localities and Species, newly classified, new to 

 the County or some of its river basins since 1888, by F. Arnold Lees. 

 The Brambles by A. E. Bradley. Demy 8vo., about 500 pages. 

 Subscription 12/6 net. London : A. Brown & Sons, 5 Farringdon 

 Avenue, E.C. 



British Flowering Plants. From drawings, in water colour, 

 by Mr Henry Perrin, with notes and an introduction by Prof. G. S. 

 Boulger, F.L.S. Three vols., royal quarto. Twelve guineas. B. 

 Quaritch, London. 



The Flora of Nottinghamshire by Professor Carr is nearing 

 completion. 



Sagina procumbens x saginoides, C. M. Lindman in Botaniska 

 Notiser, 267, 1913. An extremely valuable and able paper 

 of 16 pages, from so eminent a critical authority as Prof. 

 Lindman, who goes very minutely into the history of the above 

 plant. He mentions that S. scotica from Ben Lawers had been named 

 by me as a true species in Bot. Exch. Club Rep. 14, 1911, while 

 Dr Ostenfeld had named it as above in New Phyt. 117, 1912, 

 and "that these two different views do not really contradict each 

 other, but that both admit of being defended." Lindman has been 

 able to identify it in herbaria from many localities in Sweden and 

 Norway ; Lapponia ; North Iceland ; Mont d' Or, France ; Rie- 

 sengebirge, Germany ; Rigi, Switzerland ; Salzburg, Moravia, Austria ; 

 Cottian Alps, Piedmont ; Y enisei, Asia ; Behring Island ; America ; 

 Greenland W. and E. It would be interesting to know if in all these 

 cases the two supposed parents also occur with it. He states the hybrid 

 was recorded as early as 1868 from Bernina in Switzerland by C. C. 

 Briigger (Jahresb. Naturf. Ges. Graubiind ii., 23-4, p. 47, 1880-1881) 

 under the name S. media, that it appears as S. hybrida Kern., in lit., 

 and in Dalla Torre's & Sarnth. Fl. Tirol, ii., 155, 1909, and that it was 

 discovered at Tromso in the northernmost parts of Norway by Prof. 

 G. Lagerheim, who published it as S. JSformaniana in Kgl, Norske 



