88. PTERIDIOIDES. 295 



Native. Ericetal. Next to L. annotiiuim this is the rarest 

 British species of its genus. Irregularly distributed ; and 

 perhaps on the whole more nearly related to the English 

 than to the British type of distribution ; though its exis- 

 tence to the northward of the Grampians, in Moray and 

 Eoss, has led to the indication of the more general type 

 above. The authorities for Perth (Dr. Parsons, in Lightf. 

 Scot.), and Forfar (Mr. Reid, in Flo. Forf.) are unsatisfac- 

 tory ; and yet not to be rejected in the case of a species 

 clearly ascertained to ascend to the more northerly coun- 

 ties before mentioned. Is there no locality for this 

 Lycopodium in Wales or the Scottish Lowlands ? Mr. 

 Newman wiites, " in Scotland and Wales it is of compara- 

 tively rare occmu'ence." But where in Wales does it 

 occur ? My herbarium has specimens from Moray (Mr. 

 W. A. Stables !), and Dunbarton (Mr. H. M. BaKour !), 

 and also from many English counties. Grows within 100 

 feet of the sea level in Surrey, but I cannot certainly say 

 this of the Channel or Peninsula provinces. 



f^f, 1415. Lycopodium alpinum, Linn. 



Ai-ea 1 * * * [5] 6 7 8 9 10 11 12 13 14 15 16 17 18. 

 South-east limit in Somerset, Derby, York. 

 North limit in Shetland, Orkney, Hebrides. 

 Estimate of provinces 14. Estimate of counties 40. 

 Latitude 51 — Gl. Highland type of distribution. 

 A. A. regions. Superagrarian — Superarctic zones. 

 Descends to the coast level, in East Highlands ? 

 Ascends to 1200 yards, in same province. 

 Range of mean annual temperature 47 — 34. 

 Native. Ericetal. One outlying station for this species, 

 in Somerset, brings it almost within the midagraxian zone ; 



