87. FILICES. 271 



condition, but better may perhaps be gathered there by 

 some botanist, if I add the direction to the spot — "north 

 side, among the basalt stones, beneath the summit." The 

 Aspidium dumetorum of Smith, I suppose, also is a form 

 of L. dilatata. 



/U^J>, T^^- 1892. Lasteea FcENiSEcn, Wats. 



Area 12#*^****10 1112=i,* [15] 16 * 18. 



South limit in Cornwall, Devon, Sussex. 



North limit in Orkney. 



Estimate of provinces 10. Estimate of counties 30. 



Latitude 50 — 60. Atlantic (?) tj'pe of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descei^ds to the coast level, in the Peninsula; 



Ascends to 200 yards, in Humber. 



Range of mean annual temperature 52 — 46. 



Native. Eupestral, Sylvestral. Much ink has been 

 shed, much paper has been printed over, and considerable 

 diversity and collision of oj^inion have been shown, on the 

 specific distinctness, correct nomenclature, and localisation 

 of this fern. It is now generally admitted for a true 

 species in the opinions of British botanists, and its locali- 

 ties are gradually extending so as to include a much wider 

 area than was at first supposed. I have gathered it in 

 Cornwall, where it is abundant, and was originally re- 

 corded by the Eev. W. T. Bree. The Rev. W. S. Hore 

 and others find it in Devon. The Rev. W. H. Coleman 

 lately discovered it in Somerset. It has long been in my 

 herbarium, from the neighbovu'hood of Tonbridge Wells, 

 Sussex side, collected there in 1833 by Sir W. C. Tre- 

 velyan, and labelled (after the British Flora) Aspidium 

 spinulosum. Mr. J. T. Syme has this year (1851) given 



