378 



26. HALORAGIACEvE. 



North limit in Northumberland and Lancashire. 



Estimate of provinces 11. Estimate of counties 40. 



Latitude 50 — 55. English type of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 50 or 100 yards, in England. 



Range of mean annual temperature 51 — 48. 



Native. Lacustral. Rather a scarce plant, though per- 

 haps often overlooked. Dr. Neill records it in his Tour, 

 as having been observed in Orkney ; but there seems suf- 

 ficient reason to suspect that M. alteniiflorum, a more 

 boreal species, then unknown to the botanists of Britain, 

 may have been mistaken for this one. 



381. MvRioPHYLLUM SPICATUM, Linn. 



Area general. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Orkney, Hebrides, Sutherland. 



Estimate of provinces 18. Estimate of counties 81. 



Latitude 50 — 60. British type of distribution. 



Agrarian region. Inferagrarian — Superagi'arian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 51 — 46. 



Native. Lacustral. As recorded in books, the locali- 

 ties for this species will probably include many of those 

 more properly belonging to M. alterniflorum ; and it may 

 be considered dubious whether some of the more northern 

 counties do produce this at all. The county census is 

 taken at 81, because the genus is omitted horn the Flora 

 of Shetland. 



