PLANT NOTES FOR 1913, ETC. 



359 



six years, including the examination of about 10,000 groundsel plants, 

 I still often find it very difficult to estimate, even provisionally, the 

 constitution of a casual wild plant. Yet the methods of genetics, 

 diligently applied, obviously give one the power to replace loose specu- 

 lation and guesswork by irrefutable inductions, and so to lay down a 

 foundation upon which the evolutionist and taxonomist can build with 

 safety." Evidently these cultural experiments will, as I have already 

 stated, not lessen, but increase the number of forms able to be defined 

 and described. From the Journal of Genetics, vol. ii., n. 3, 239-276, 

 1912, with 24 figures. 



Proceedings of the Linnean Society, 1913. In addition to 

 the note on Alchemilla acutidens (p. 15) there is an account of Ophrys 

 Trollii by Mr E. G. Baker. Dr Moss (p. 68, June 19, 1913) exhibit- 

 ed several new varieties of British plants, three vars. of Populus 

 nigra, three of Alnus (See Report 179, 1912), Ranunculus ficarice 

 formis, Primula scotica var., Lycium barbarum confused with L. 

 chinense, both of which occur, Gymnadenia Wahlenbergii and G. 

 densifiora. The latter is, however, alluded to in Syme's English 

 Botany ix., 103, as having been gathered by the Rev. W. W. N. 

 Newbould in Herts, and T recorded it from Ireland in the Gardener' 's 

 Chronicle of last year. 



The Proceedings of 1912 contains a valuable Index to the 

 Linnean Herbarium, pp. 27-152, with indications to the Linnean 

 types, a much needed publication. A paper on the Distribution of 

 Elodea canadensis in the British Isles in 1909 by A. O. Walker is 

 given on pp. 71-90. Berks, Oxon, Bucks, Beds, Warwick, and other 

 counties are however not mentioned. 



Irish Naturalist, 1913. The garden form of Saxifraga 

 umbrosa, near Hillsborough, Co. Down, p. 19. Additions to Irish 

 Topographical Botany, 1908-1912, p. 105, contains numerous additions 

 and also the corrections of the records of Ranunculus Lingua from 

 34, the plant being R. Flammula, of Hieracium Schmidtii from 28, 

 29, which are H. anglicum, of H. caesium var. Schmidtii from 28, H. 

 ciliatum var. repandum, and of Allium vineale horn 39, which is A. 

 oleraceum. Elisma natans from Kerry and Clare are queried on 

 somewhat unintelligible grounds. When Professor Gliick was at my 

 house he named without any expression of doubt flowerless specimens 



