PHYTOLOGY. 



NOTES OF A BOTANICAL EXCURSION TO THE 



BKEADALBANE MOUNTAINS, PEKTHSHIKE. 



By COLONEL DRUMMOND-HAY, C.M.Z.S., 

 and Dr. BUCHANAN WHITE, F.L.S. 



IN August last we made a short excursion to Breadalbane, 

 and were successful in finding new localities for some of 

 the rarer alpines. These will, of course, be published in the 

 "Flora of Perthshire," now being prepared by the Perthshire 

 Society of Natural Science ; but, in the meantime, we think it 

 may not be amiss to give some notes on our excursion, and to 

 record some of the more interesting species that we found. 



Arabis petr&a Lamk. This pretty plant has not, we believe, 

 been recorded as a Perthshire species since Lightfoot reported 

 it from Craig Chailleach, where we have never found it. It 

 is abundant on Ben Laoigh. Here we chiefly found the 

 white-flowered form, though a few plants of the purple-flowered 

 occurred. The latter appears to be commoner in the west 

 than in the east of Scotland. 



Sagina nivalis Fr. Ben Lawers, in two places. Altitude, 

 3100-3350 feet. 



Arenaria rubella Hook. Cam Creag and Ben Lawers. 



Cerastimu triviale Link., var. alpinum Koch. If this occurs at 

 all in Breadalbane, it is very rare. It seems to be more a 

 plant of the Eastern Grampians, occurring sparingly in 

 Athole, and more commonly in Aberdeen and Forfar shires. 

 It appears to be the mountain equivalent of the lowland 

 var. holostcoides Fr. 



Rubus saxatilis L. A curious form of this on Ben Laoigh 

 deserves mention. At first we thought we had found R. 

 arcticus, but we fear the plant is only R. saxatilis, though it 

 had no prostrate barren stems, and otherwise differed from 

 the usual form of the latter. It was not in flower or fruit. 



