406 71. AMENTIFER.E. 



present much rarer species. Those three provinces rest on 

 old authority, not verified or confinned by any good bota- 

 nist of the present day, so far as I am aware ; indeed, I 

 know not that any living botanist has pretended to have 

 found S. reticulata southward of the Highland provinces, 

 with the sole exception of Mr. Joseph Sidebotham (Phyto- 

 logist, ii. 316), on whose accuracy of statement in botanical 

 matters I feel quite unable to place confidence, after read- 

 ing his contributions to the Phytologist. 1 have seen S. 

 reticulata in the counties of Perth, Forfar and Aberdeen. 

 Professor Graham found it sparingly on Ben Hope, in Su- 

 therland. Old authorities may be found quoted in the 

 Botanist's Guides, for Cumberland, Westmoreland, York, 

 and Caernarvon. In connexion with the last county, it 

 would be curious to ascertain whether two localities pub- 

 lished for Salix reticulata, on authority of Mr. Griffith, in 

 the Botanist's Guide, do not both belong to Cotoneaster 

 vulgaris ; namely, those of Llandudno and Penmaen-mawi\ 



1027. Salix herbacea, Linn. 



Area ***** 6 7 * * 10 * 12 13 * 15 16 17 18. 



South limit in Brecon, Caeman'on, York. 

 jL/-i^-^^ North limit in Orkney, Hebrides, Sutherland. 



Estimate of provinces 9. Estimate of counties 20. 



Latitude 52 — 60. Highland type of distribution. 



Arctic region. Midarctic — Superarctic zones. 



Descends to 500 yards, in North Isles (Orkney). 



Ascends to 1400 or 1450 yards, in East Highlands. 



Range of mean annual temperature 41 — 32. 



Native. Ericetal, Rupestral. Although the English 

 botanist naturally regards this as quite a "rai'e plant," it is 

 one of the most abundant plants towards the summits of 



