344 63. POLYGONACE^. 



Hange of mean annual temperature 52 — 45. 



Native. Pratal, Viatical. Perhaps this species may be 

 found considerably higher than is indicated in the formula 

 above. In my earlier notes on the altitudes of localities I 

 did not make any distinction between R. crispus and R. 

 aquaticus ; and more recent visits to the Highland coun- 

 ties, made too early in the season for seeing R. crispus ad- 

 vanced towards maturity, have not enabled me to trace the 

 present species to its true upper limits. 



945. RUMEX PRATENSIS, M. 8f K. 



Area 1 2 3 4 5 6 7 8 * 10. 



South limit in Cornwall, Isle of Wight, Sussex. 



North limit in York, ? 



Estimate of provinces 10. Estimate of counties — ? " 



Latitude 50 — 54. English type of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 52 — 48. 



Native. Pratal, Paludal. A dubious species, recently 

 distinguished as such, and hence not familiar to the eyes 

 of many botanists who have published lists and habitats. 

 My notes show localities in fifteen counties, and not un- 

 likely the plant may eventually prove to be much more 

 generally distributed than is at present shown to be the 

 case. 



946. RuMEX ALPINDS, Linn. 



Area (* * * 4 * * * 8 * * 11 12 13 * 15 16). 



Alien. Appears to have become established in many 



