WITH ALTITUDE. 77 



but so soon as we quit the Highlands they disappear 

 from the low grounds. They are; Alchemilla alpina, 

 Arbutus alpina, A. Uva-Ursi, Carex capillaris, Cornus 

 suecica, Draba incana, Dry as octopetala, Epilobium al- 

 sinifolium, Galium boreale, Meum athamanticum, Oxyria 

 reniformis, Pyrola secunda, Rubus Chamaemorus, Saxi- 

 fraga aizoides, S. stellaris, S. oppositifolia, Thalictrum al- 

 pinum, Tofieldia palustris. 



i " Species of undetermined Height. — Besides what are 

 enumerated in the previous lists, there are some other 

 mountain plants which I have not seen growing; but 

 which are most of them probably to be found between 

 2000 and 3000 feet. They are the extremely rare plants 

 discovered by Mr. George Don, and one or two other 

 botanists ; Ajuga alpina, Arabis ciliata, Arenaria fasti- 

 giata, Bartsia alpina, Carex Mielichoferi, C. angustifolia, 

 C. stictocarpa, C. hordeiformis, C. ustulata, Elyna caricina, 

 Eriophorum alpinum (said to grow on Ben-Lawers), E. 

 capitatum, Gentiana nivalis, Hieracium cerinthoides, Hie- 

 rochloe borealis, Lychnis alpina, Menziesia caerulea, Poa 

 laxa, Potentilla opaca, P. tridentata, Ranunculus alpestris, 

 Salix (various species), Saxifraga denudata, S. elongella, 

 S. laetevirens, S. caespitosa, S. pedatifida, S. muscoides, 

 Stellaria scapigera, Thlaspi alpestre, Veronica fruticulosa. 

 Omitting these, and including all those previously men- 

 tioned, we have 306 species, enumerated as growing 

 above 1000 feet of elevation. Had we a perfect catalogue, 

 they would probably amount to 400 or 500 ; the whole 

 flora of Scotland being about 1100 phaenogamous spe- 

 cies. Cryptogamous plants have been entirely omitted 

 in these lists. If we now arrange them according to the 

 Natural Orders, as given in Loudon's Hortus JBritannicus, 

 we have the numbers and proportions, at the different 

 heights, as follows : — 



e 3 



