72 DISTRIBUTION IN CONNECTION 



Vaccinium Myrtillus. 



uliginosum. 



Vitis Idaea. 



Azalea procumbens. 

 Arbutus alpina. 

 Calluna vulgaris. 

 Vaccinium Oxycoccos. 

 Arbutus Uva Ursi. 

 Erica Tetralix. 



cinerea. 



Azalea procumbens. 



Arbutus alpina. 

 Andromeda polifolia. 



Vaccinium uliginosum. 



Arbutus Uva- Ursi. 



Vaccinium Vitis- Idaea. 

 Erica vagans. 



Andromeda polifolia. 



Vaccinium Oxycoccos. 

 Erica ciliaris. 



Calluna and Erica. 



2. DISTRIBUTION IN CONNECTION WITH ALTITUDE 

 ABOVE THE SEA. 



The following lists of plants observed in the Scottish 

 Highlands, arranged in descending stages according to 

 absolute elevation, may be of some interest. They were 

 published in the Edinburgh New Philosophical Journal, 

 No. 28. 



" Several of the species may occur (especially on the 

 Breadalbane mountains) rather higher than is here spe- 

 cified. All I can yet say is, that they do grow at least as 

 high or as low, and probably not much more ; but, no 

 doubt, some of the spring flowers below 2000 feet were 

 overlooked. 



