an Excursion to the Highlands in August 1830. 361 



tion of the 3d of August, calm, and the distances from our 



quarters being very considerable, we were able to examine the 



mountains which we visited only superficially, yet the excursion 



was productive, and left a very general desire with us all to visit 



the same country again. Of the plants met with, those chiefly 



worth notice were the following : 



Ahpecurus aljnnus Original station on rocks in the stream leading into Loch 



AVhorl, Clova. 



Arabis hispida, — Ben-na-rauic-dui. 



Betula juina, var. with large pointed leaves, fewer larger indentations, and 

 much longer petioles. I gathered this to the eastward of Ben-na-Buii-d, 

 near the top of a low hill over which the path from the Dee leads, and 

 was inclined to attribute the appearance to the luxuriance of young 

 shoots springing from ground on which the heath had lately been burnt, 

 but it was mixed with other plants having the usual appearance. 



Caltha radicans I pulled this plant, but not in flower, one or two miles from 



Castleton, on the road to the Spitta! of Glenshee. It seems to me to 

 be distinguished from a plant very often mistaken for it, the creeping 

 variety of Caltha palustris, by its far more divaricated lobes, and its 

 much more acute serratures. 



Carex atrata, — Corry at the top of Glen Callader. 



Carex incurva, — Aberdeen Links. 



Carex Vahlii This plant, new to the British Flora, was gathered on the same 



day by Dr Greville and Mr Balfour in the corry at the top of Glen Cal- 

 lader. I have since determined the species by comparison witli authen- 

 tic continental specimens. It differs from these only in the leaves being 

 broader; but in this respect one specimen which I have from Gulbrands- 

 daUa, through the Unio Itineraria, very nearly approaches it. The zeal 

 of my friend Mr Balfour has carried him back to the station, and I hope 

 he will return rewarded with a greater number of specimens. 



Cetraria islaiidica,— in fruit on several mountains near Castleton. I found 

 in this neighbourhood, in Angust 1821, the first British specimen which 

 had ever been seen in fruit. My friends Dra Hooker, Greville and Mr 

 Arnott, afterwards pulled it in abundance; but I am not aware that it 

 has ever been found in fruit in any other district in Britain. 



Cetraria nivalis,— ne?ir the summits of every mountain we visited. 



Galitim ;>twj//«m,— growing with Oxytropis campestris. 

 Goodyera repens — Fir wood at Aboyne. 



IJieraeium alpinum,— on all the mountains which we visited, and in the corry 

 at the top of Glen Callader especially, most abundant and luxuriant : 

 also the variety of this which has been called H. Halleri. Between 

 these, I can really see no distinction that is not obviously the result 

 of situation,— the first growing on dry, the last in damp places. 



Juncus castaneus Above the rocks in the corry at the head of Glen Callader. 



Jungermannia Dmiana, in fruit. — Ben-na-muic-dui. 



JULY SKPTEMBEU 1830. A a 



