H'2. TYPHACE^. 33 



1145. Spakganium simplex, Hiids. 



Area 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 [18]. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Eoss, Ai'gyle ; — [or, Orkney; Neill.] 



Estimate of i^rovinces 17. 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 — 46. 



Native. Paludal. I have seen no specimen of this 

 plant, gathered farther northward than the counties of 

 Edinburgh and Wigton ; and it will perhaps eventually 

 appear that some of the Highland localities, reported for 

 the present species, do truly belong to the Sp. natans, 

 larger form. Under this doubt, I have ventured to reject 

 the authority of Dr. Neill for its occurrence in Orkney, 

 where other botanists find apparently only Sp. natans. 

 For the North Highland province I have but a single au- 

 thority, the checked catalogue of Ross-shire plants, from 

 the Rev. George Gordon. For the East and West High- 

 lands there are several authorities. 



1146. Spaeganium ramosum, Huds. 



Area general. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Orknej^. 



Estimate of provinces 18. Estimate of counties 75. 



VOL. III. F 



