48 ANNALS OF SCOTTISH NATURAL HISTORY 



of Comarum palustre ; the form of Potentilla Anserina, with 

 leaves green on the upper surface ; the hairy-fruited form of 

 Medicago lupulina ; Arum maculatum, var. immaculatum, 

 S. F. Gray ; Barbarea vulgaris, var. divaricata ; Viola 

 odorata, var. imberbis (Leighton), Henslow. 



An innovation in the Catalogue is the admission of forms 

 under some of the genera. The bulk of the Catalogue will 

 be greatly increased if this plan be carried out with any 

 degree of consistency. While we have Viola odorata, f. alba 

 (Lange) (Why should Lange's name be connected with it ?), 

 why should the lilac and purple forms, which are equally 

 distinct, the white form of V. Jiirta, the white form of V. 

 canina, the white form of Trifolium incarnatum (the var. 

 stramineum\ the white form of T. pratense, the yellow form 

 of Raphanns Raphanistrum, the rose - coloured form of 

 Volvulus septum, the cream - coloured form of Myosotis 

 sylvatica, the white -flowered form of Geranium pratense, of 

 G. molle, of G. Robertianuin, of Erodium cicutarium, of E. 

 maritimum, and of numerous others, be omitted ? 



Among the hybrids which might be included are Lychnis 

 alba X dioica and Senecio squalidus X vulgaris. 



To one method of citation used in the Catalogue the 

 writer must raise a protest, as it seriously threatens to hinder 

 that uniformity of nomenclature which can be obtained only 

 by adopting the law of priority. Mr. Hanbury himself in 

 his arrangement of the Hieracia consistently and correctly 

 uses the Linnean names of Hieracium alpimim and H. 

 murorum in a more restricted sense than did Linnaeus. In 

 many other cases the Linnean names are now used in a 

 restricted sense. For instance, Callitriche verna, L. (which was 

 C. vernalis, K., in eighth edition), Cardamine hirsuta, Polygala 

 vulgaris, Rosa canina, MentJia sativa, Enonymus europceus, 

 Festuca Myuros, Galeopsis Ladanum ; while Men t ha piperita, 

 Potentilla verna, and OrobancJie major are cited as of 

 Linnaeus, although there is considerable diversity of opinion 

 as to their being correctly applied to the plants in question. 

 But unfortunately another practice, which is I think to be 

 strongly deprecated, has been followed in some cases, which 

 consists in giving up the older name which, according to the 

 rule of priority should be adopted, for a more recent one, 



