226 ANNALS OF SCOTTISH NATURAL HISTORY 



R. csesia, Sm., was first found by Mr. Borrer in Perthshire. This 

 name antedates ./?. coriifolia, Fries, with which it appears to be 

 synonymous. To this must be referred my own record of ^?. 

 canina, L., var. pruinosa (Baker) ; and so too must the Rev. 

 E. F. Linton's record, teste M. Crepin. R. cczsia is a frequent 

 plant of Strath Tay. 



Cratsegus Oxyacantha, L. I have come to the conclusion that it 

 will be advantageous to make two species of our Hawthorns, 

 as is done in many European floras. As I have already 

 pointed out in the " Annals," the characters derived from the 

 leaf venation appear to be the most dependable. The 

 commoner British plant is the one with leaves having the 

 lower lobes with veins curving outwards. It usually has one 

 style only, rarely two ; the peduncles usually downy, rarely 

 glabrous (var. leiocalyx), and the leaves usually much more 

 divided. This, the common plant, is indeed the prevailing 

 species in Scotland, so far as my observations and the study of 

 the public herbaria go. Moreover, it is the C. Oxyacantha of 

 the Linnean Herbarium, as we might have expected from its 

 being the commoner form in northern latitudes. Therefore I 

 propose to replace the name C. monogyna of Jacquin by that 

 of C. Oxyacantha, L. The second species (which is not rare 

 in the Midland counties, and I have seen specimens from as 

 far north as Durham), is C. oxyacanthoides, Thuillier. The 

 Rev. E. S. Marshall records this from East Ross ; but, accord- 

 ing to my definition, his plant is rather C. Oxyacantha, var. 

 leiocalyx, as it is, I believe, only one-styled, and the leaf 

 characters agree with this species. 



Saxifraga quinquefida, Haivorth, appears under three headings in 

 the "Flora of Perthshire." It ascends to 2800 feet in Glas 

 Thulachan, and to 3200 feet on Ben Lawers. I have again 

 gathered a Saxifrage which Herr Freyn refers to 6". caspitosa 

 on Ben Lawers ; it is very near to the plant which Professor 

 Engler called S. decipiens, Ehrh., var. grcenlandica (L.). 



Callitriche pedunculata, DC, Loch-na-Chait. 



Epilobium alsinefolium, Vill. Ben Heasgarnich, with a hybrid of 

 which E. alpinum was the other parent. This hybrid has also 

 been recorded by Rev. E. S. Marshall from Glen Shee 

 ("Journ. Bot," 1893, p. 231). I have recently had an oppor- 

 tunity of seeing the " Prospectus de PHistoire des plantes de 

 Dauphine," and find that the spelling of the name is as given 

 above, and not ahinifoliiim, as, quoting alas at second hand, 

 I once suggested in these pages. 



E. alpinum, Z., ascends to 3200 feet in H. Isla. 



