PHANEROGAMS. Ill 



sub-alpine limit, the majority of them being under 1500 ft., but deep glens 

 and rocky summits lend them the requisites of an extensive and varied 

 flora. 



Exposure : Natural protection is admittedly one of the most important 

 factors in plant life. Light, heat, and moisture plants must certainly have, 

 but these, without the proper shelter, both during summer and winter, to 

 the majority of our native plants, would avail but little. Had space per- 

 mitted, many notable examples might have been given in illustration of 

 this observation. For instance, in the case of ballast heap plants, we have 

 forms imported from colder climates than our own which yet are unable 

 to pass through our winter. Many Canadian plants do not pass through 

 the winter with us, yet the Rhododendron, which flowers with us while 

 SUOW T is on the ground, cannot pass through the Canadian winter. Similar 

 instances are to be found in our own native flora. Doubtless it is for some 

 .such reason that we find Erophila inflata, Hook, fil., Juncus castaneus, Sm., 

 Woodsia hyperborea, R. Br., and alpine ferns generally on eastern, and most 

 luxuriant on north-eastern exposures, and Arabis petraea, Lam., Juncus 

 biglumis, L., principally on western, and most luxuriantly on south-western 

 exposures. These are one or two notable cases, but a very large list might 

 be made up from our own Scottish flora. What effect the mild winters of 

 recent years is having on our flora generally, it does not come within the 

 scope of our present purpose to enquire, however interesting and important 

 the subject may be. 



Temperature : The present mean temperature at different points of 

 former agrarian levels, during the growing season shows the cause of failure 

 in attempting to grow cereals now, where in comparatively recent times very 

 good crops of corn were cultivated. In consequence of this failure, plants 

 associated with arable lands in these districts have suffered, and will 

 ultimately become extinct. 



The classification followed is that of the London catalogue, 9th edition. 



P. EWING, F.L.S. 



EDITOR'S NOTE. 



The capital letters showing records in the districts and the altitudes have 

 been added by the editor from the following well-known authorities, Light- 

 foot, Bryce, Balfour, Hooker, Hennedy, and Buchanan White. Great 

 injustice would also have been done to such well known workers as John 

 Smith, Flora Ayrshire, L. Watt, D. A. Boyd, T. Wise, Dr. Fullarton and 



A. Somerville, by the absence of their records, and so far as possible their 

 work has been included also. The short time available has made this very 

 difficult, and their contributions are only distinguished by the commas 

 between the letters. 



G. F. SCOTT ELLIOT. 



Clematis Vitalba, L. Uddingston, Innellan, Bowling. No doubt intro- 

 duced. F G. 



Thalictrum alpinum, L. Ben Lomond, Cobbler, Arran, BEL, over 1000 ft. 

 -2500 ft., Buchanan White. 



T. minus, L. Ayr, Falls of Clvde, Ben Laoigh, Arran, Campbeltown, B D E 

 H K L, J. Bryce. 



T. majus, Crantz. Ayr, Rutherglen, Dunoon, Arran, Tarbert, BEFGK. 



T. flavum, L. Paisley, Rutherglen, Bowling, Arran. Garden escape. E F 

 G, J. Bryce. 



Anemone nemorosa, L. Common. B, F G J K L, D or I, Somerville. 



Ranunculus fluitans, Lam. Crossford, G, Hennedy. F. 



B. pseudo-fluitans, u Bab. " Hiern. Lanark, Dumbarton, F G, B, Balloch, 



Watt. 



