24. ROSACEA. 345 



PoTENTiLLA OPACA, Linn. 



Area [15]. 



Tncognit. " Hills of Clova, and Braes of Balquidder, 

 Scotland : G. Don." Repeatedly as the hills of Clova 

 have been searched by the best collecting botanists of 

 Scotland and England, since the time of Don, this species 

 has not again been found. 



331. POTENTILLA REPTANS, Li)in. 



Area 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Aberdeenshire, Perthshire, Argyleshire. 



Estimate of provinces 16. Estimate of counties 70. 



Latitude 50 — 58. British (?) type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 52 — 47. 



Native. Septal and Viatical. An abundant species in 

 England ; deci'easing so much in Scotland, as almost to 

 waiTant the assignment of it to the English type, notwith- 

 standing its wide area and high census. 



Wf.^'^f-/-^/;. 332. POTENTILLA ToRMENTILLA, ScM. 

 332,b. POTENTILLA NEMORALIS, Neat. 



Area, general. 



South limit in Cornwall, Isle of Wight, Kent. 



2 Y 



