348 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 



21s. Lovell Reeve & Co. 1913. After many years resting in 

 a pupa condition we are greatly pleased to see the advent 

 of a new part of this important work which we under- 

 stand is to be completed by Mr Arthur Bennett. This part 

 treats of the lucens group. There is no allusion to var. acuminatus 

 (Schum.). The name P. Zizii is used instead of angustifolius. P. 

 coriaceus is made a distinct species. The name P. saliynus Fryer is 

 retained for the Herefordshire plant notwithstanding P. salicifolius 

 Wolfg. is quoted without doubt in its synonymy, and if identical must 

 be used for it. P. heterophyllus is made a distinct species from P. 

 graminifolius. There is no reliable authority for it in Oxon or Berks, 

 but it is recorded for S. Hants. Should not P. varians Fryer be P. 

 spathiformis Tuck. 1 P. densus is recorded for Flint. P. nitens may 

 be added for Northants, Dumfries, Kirkcudbright and Westmorland. 

 The plates are still unfortunately without names of the plants on them. 



The British Willows. Rev. E. F. Linton. Supplement to 

 Journ. Bot. 1913. In this work 18 species and sub-species, with their 

 varieties and hybrids are described. S. caerulea and S. vitellina which 

 Elwes and Henry {British Trees) give as a full species are here more 

 correctly called varieties, and the variety sphacelata which they give 

 under S. caprea, and which Smith described as a species in E.B. 2333 is 

 omitted. It was S. lanata Lightfoot (not L.) and was found by Rev. 

 Dr Stewart near Finlarig, Perth. It is by no means clear that full 

 justice has yet been done to the careful work and cultural experiments 

 of Borrer and his School of Salicologists. 



Frequency op Floral Analysis. Rural Studies Series, Rev. 

 E. A. Woodruffe-Peacock. Price 6d. 1913. 



Vegetation of the Peak District, by Dr C. E. Moss. Demy 

 8vo. pp. x. 235, with 36 ill. and 2 coloured maps. Cambridge 

 Univ. Press, 12/- nett. 1913. An excellent piece of work which 

 makes the dry bones of the Flora of Derbyshire, accurate and pains- 

 taking although that work was, to speak, and aptly illustrates how 

 necessary it is in treating of a county to link together not only the 

 floristic and the geologic factors, but to show how much man and 

 agricultural operations influence the vegetation of areas, so that a 

 mere list of names and localities can no longer be considered sufficient 

 to constitute a Flora. The district Dr Moss has so well described is 



