166 ANNALS OF SCOTTISH NATURAL HISTORY 



The height of the summit is 3445 feet ; and there is a con- 

 siderable quantity of white quartz in the cliffs, especially on 

 the northern side. The moorland on the ascent afforded a 

 very luxuriant growth of the Cloudberry, with more abundant 

 and more perfectly ripe fruit than I had before observed. 

 To me it is very agreeable, although my companion, the Rev. 

 H. J. Riddelsdell, affected to despise it. But the ascent was 

 made on the hottest day we experienced in Scotland of the 

 hot year 1899; and the toilsome ascent over heather and 

 Molinia, and the plague of flies, may have affected us in a 

 different manner. One of the conspicuous features of the 

 rocks was the abundance of Saxifraga oppositifolia ; and 

 Sibbaldia was frequent and very luxuriant, notwithstanding 

 the dry season which allowed us to cross the extensive peat- 

 bogs without difficulty. 



In the following notes, for the sake of convenience, I 

 have practically followed the sequence adopted in the " Flora 

 of Perthshire " ;- 



Thalictrum alpinum, .., ascends to 3250 feet on Glas Thulachan. 

 I should be glad of information respecting its growth on dry 

 rocks'. I think I have seen it on dry rock ledges with 

 Woodsia. 



T. Kochii, Fries. The Rev. E. F. Linton sent plants so labelled 

 from Fortingal, Mid Perth, to the Exchange Club in 1897; 

 but the specimens were not sufficiently complete for Herr 

 Freyn to report on them. I have collected material from the 

 banks of Loch Tay this season which will, I trust, be sufficient 

 for the purpose. The " Flora of Perthshire " does not assist 

 us, as the Loch Tay plants are grouped under T. mi/ius, L., as 

 var. montanum and var. majus. 



* Ranunculus Nathorstii, A. Berl. (R. acris, var. Nathorstii). I met 

 with this plant many years ago on Ben Lawers ; but although I 

 felt it was distinct from ordinary acris, it was not until 1897 

 that Herr Freyn identified it with the above ; and on the 

 specimens I collected then and in 1898 he remarks that they 

 offer a considerable range of variation, some from Ben Lawers 

 being fairly typical, others are bracteate, as in 7?. auricomus, 

 while others are hairy and large-flowered forms. One, also 

 from Ben Lawers, is a very remarkable form, with a somewhat 

 elongated or else prsemorse rhizome covered with coarse hairs. 

 As the beak of the fruit is of marked length, he considers it 

 to belong to Nathorstii, although he had never seen specimens 



