46 ANNALS OF SCOTTISH NATURAL HISTORY 



Linnaeus, which in the " Kew Index" is called A. Cherleria, 

 Hook. fil. 



The Channel Island Bromus appears under two names, 

 i.e. B. madritensis, var. rigidus (Roth), and B. rigidus, Roth. 

 The latter name is adopted by Nyman, and also by the 

 authors of the " Kew Index." The var. Curtisii of B. 

 madritensis should be deleted, as it is the type plant. Bromus 

 maximus, Desf., is omitted altogether, as is Poa casia, Sm. 

 This latter is given in the " Index Kewensis " as a distinct 

 species. Professor Hackel named plants which I collected 

 on Ben Lawers P. cccsia, Sm. They are allied to P. glauca 

 and P. nemoralis. 



The " Kew Index " might be followed in giving Hordeum 

 sylvaticum, Huds., as Elymus europ&us, Linn. 



Festuca procumbens, Kunth, is placed under Glyceria in 

 the " Kew Index," while Mentha Pauliana is put under M. 

 arvensis in the same work, not under M. gentilis as in the 

 Catalogue. 



The grade of citizenship of certain plants must always 

 be open to a difference of opinion. Certain plants which 

 are treated as evident introductions in the Catalogue appear 

 to be now sufficiently established to warrant printing their 

 names in roman type, but prefixing an asterisk, that is, 

 transferring them from the class of casuals or aliens to that of 

 colonists or denizens. Among such are Senecio saracenicus, 

 which is so completely naturalised in Somersetshire, etc. ; 

 5. squalidus, equally well established about Oxford ; Impatiens 

 parviflora, which covers acres of one of our Berkshire woods ; 

 Sedum dasyphyllum, which is abundant on walls over a con- 

 siderable area of the Berkshire Vale ; Euphorbia Esula, 

 which occurs in wild-looking spots by rivers in Buckingham- 

 shire and in Northamptonshire ; Trifolium liybridum, 

 Chrysanthemum Parthenium, Melilotus arvensis (the latter is 

 starred, but italics are used for it), Mimulus luteus, Cheno- 

 podium opulifolium, Alyssum calycinum, Cochlearia Armoracia, 

 Geranium striatum, and Lupinus perennis. On the contrary, 

 I should star Mentha alopecuroides, which is given as a 

 native plant. The var. setosus of Cnicus arvensis would 

 be better starred, if not indeed italicised ; and the var. 

 velutinus of Bromus secalinus would perhaps also be 



