81. FLUVIALES. 23 



1136. EUPPIA MARITIMA, LinU. 

 1136, b. EUPPIA ROSTELLATA, i^OC/t. 



Area 1 3 3 4 * 6 7 * 9 10 11 * 13 14 15 16 * 18. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Shetland, Orkney, Hebrides. 



Estimate of provinces 16. Estimate of counties 50. 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the sea level, in the Peninsula. 



Ascends, at the sea level, to the North Isles. 



Eange of mean annual temperature 52 — 45. 



Native. Littoral (lacustral). Although the two plants, 

 which are here united under one head, may really be 

 distinct species, their recorded localities cannot at present 

 be distinguished ; most of them having been assigned to 

 Euppia maritima, as a name for either or both of the 

 alleged species. Not improbably, E. rostellata may be 

 found the more widely distributed of the two. Accord- 

 ing to Mr. J. T. Syme, E. rostellata occurs in Britain 

 northward to Orkney ; and by the ' Summa Vegetabihum,' 

 it would seem to be rather more widely spread than is 

 the E. maritima in Scandinavia. 



1137. ZaNNICHELLIA PAiUSTRIS, Liflll. 



1137, b. Zannichellia pedunculata, Reich. 



Ai-ea 1 3 3 4 5 6 7 8 9 10 11 12 13 14 * * 17 18. 

 South limit in Cornwall, Isle of Wight, Kent. 

 North limit in Orkney, Sutherland. 

 Estimate of provinces 18. Estimate of counties 70. 



