71. AMENTIFER.E. 405 



Descends to 800 yards, less or more. 



Ascends to 900 yards, less or more. 



Range of mean annual temperature 39 — 38. 



Native. Rupestral, Uliginal. "Very local, being re- 

 stricted to a few rocky glens in the eastern Grampians, 

 at the upper ends of Glens Clova, Isla, and Callater. I 

 never ascertained the altitudes of any of its stations ex- 

 actly, but have no doubt about the above indications being 

 very near the truth. It certainly occurs between 800 and 

 900 yards, and perhaps not lower than the former, nor 

 higher than the latter elevation. 



1026. Salix reticulata, Linn. 



Area ^^ * * * * * [7 ^^ * 10 * 12J * * 15 ^ 17. 



South limit in Perth, Forfar, Aberdeen. 



North limit in Sutherland. 



Estimate of provinces 2. Estimate of counties 4. 



Latitude 56 — 59. Highland type of distribution. 



Arctic region. Midarctic — Superarctic zones. 



Descends to 850 yards, or lower, in Ea.st Highlands. 



Ascends to 1100 yards, in same province. 



Range of mean annual temperature 39 — 36. 



Native. Rupestral. If once really known to a botanist, 

 the present very distinct species cannot be confounded 

 with any other British species; and it might hence appear 

 that it ought to form an exception to the difficulties and 

 uncertainties which have arisen in the attempt to show the 

 distribution of so many other species of this troublesome 

 genus. Nevertheless, as will be observed, I have felt war- 

 ranted in rejecting three out of the five provinces which 

 have been recorded for Salix reticulata, under the impres- 

 sion that Salix hcrbacia had there been mistaken for tlie 



