63 85, CYPERACE^. 



Ascends to 50 yards, more or less. 



Range of mean annual temperature about 49. 



Native. Paludal or Inundatal. Apparently still more 

 local than the other species ; having hitherto been found 

 only in two stations ; uamelj', in Middlesex, in " Eel 

 Brook meadow, a marshy j)asture, situate between AValham 

 Green and Parson's Green, beyond Little Chelsea " (IMr. 

 Edward Edwards) ; and in a pond at Shalford, near 

 Guildford, Surrey, where I had the i^leasui'e of seeing it, 

 obligingly guided to the spot by its discoverer, Mr. 

 Salmon. 



1178. Cladium Mariscus, Litin. 



Area 1 2 8 4 5 6 7 8 9 10 11 12 13 * (15) « 17. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Sutherland ; — Wigton, Northumberland. 



Estimate of provinces 14. Estimate of counties 25. 



Latitude 50 — 59. English type of distribution. 



Agrarian region. Inferagrarian — Sui^eragrarian zones. 



Descends to the coast level, in Cornwall. 



Ascends to 100 yards, less or more, in England. 



Eange of mean annual temperature 52 — 46. 



Native. Paludal. Thinly scattered through England, 

 and extremel}' local in Scotland. The only two Scottish 

 stations now known for the Cladium, are Eavenstou Loch, 

 near Whitehorn, in Wigtonshire ; and a marsh by the 

 road-side, midway between Kylestrome and Badcal Church, 

 in Sutherland ; found in the fomier by Dr. G. Macnab, 

 and in the latter by Dr. R. Graham. It did formerly 

 occur in a thii-d Scottish station, the Moss of Restennet, 

 near Forfar ; but drainage has there destroyed it. Thus, 

 notwithstanding the outlying locality of Sutherland, it has 



