240 55. LAMIACE.E. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 52 — 47. 



Native. Paludal, Inundatal, &c. Considered by the 

 Rev. G. Gordon to be rare and doubtfiilly native in Moray. 

 Unnoticed in the Flora Abredonensis and Flora of Forfar- 

 shire. Collected by Dr. Dewar near Cleish, in Kim'oss ; 

 and by Professor Balfour in Islay, Argyle. In the Edin- 

 burgh Catalogue it is marked as a species of the highest 

 degree of frequency, like M. arvensis and M. hirsuta. 

 Southward from the Forth, the recorded localities are nu- 

 merous, and take most counties into the list of habitats ; 

 but how far it is indigenous in many of those published lo- 

 calities I am not able to declare. The distribution, as 

 above set forth, may be construed to include M. sativa and 

 M. rubra ; for the nominal inclusion also of M. gentilis, M. 

 gracilis, &c. will make very little difference in the area, 

 census, &c. While far from satisfied with the arrangement 

 of the species and quasi-species in the London Catalogue, 

 I do not see my way to any more satisfactory substitute, 

 and therefore still adhere to that arrangement here. 



808. Mentha arvensis, Linn. 

 &c. &c. 



Area general. 



South limit in Cornwall, Isle of Wight, Kent. 

 North limit in Orkney, Ross, Aberdeen, Argyle. 

 Estimate of provinces 18. Estimate of counties 80. 

 Latitude 50 — 60. British type of distribution. 

 Agrarian region. Inferagrarian — Superagrarian zones. 

 Descends to the coast level, in the Peninsula. 

 Ascends to 350 yards, in East Highlands. 

 Range of mean annual temperature 52 — 43. 



