188 11. ELATINACEiE. 



143. Elatine hexandra, De C. ^ /^^^ /// ■/^.'^P^' 



Area 1 23*5*789*^**.* 15.//. 



South limit in Cornwall and Sussex. 



North limit in Kincardine and Perth shires. 



Estimate of provinces 10. Estimate of counties 15. 



Latitude 50 — 58. British (?) type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 50 or 100 yards, in England. 



Range of mean annual temperature 52 — 46. 



Native. Lacustral. The gradual manner in which the 

 area of this little plant has been extended, and its localities 

 increased in number, yields a striking illustration of the 

 close attention bestowed upon British botany during the 

 present century. Even so late as the date of the English 

 Flora, 1824, we find its author recording only two locali- 

 ties for this species, in Shropshire and Berkshire. My 

 collection of localities now indicates its occvirrence in Corn- 

 wall (Rev. W. S.Hore,) Sussex (Mr. Bon-er), SmTey (Rev. 

 W. H. Coleman), Berkshire (Mr. T. F. Forster), Warwick- 

 shire (Dr. Lloyd), Shropshire (Rev. A. Bloxam), Angle-, 

 sea (Mr. C. C. Babington), Leicestershire (Mr. Churchill 

 Babington), Cheshire (Dr. Wood), Perthshire (Mr. James 

 Macnab), Kincardineshire (Dr. Dickie). It seems so pro- 

 bable that other stations will yet be discovered for this 

 minute plant, that I have ventured to add to the number of 

 counties and provinces, in the line of estimates ; although 

 I could scarce select the two provinces and four counties 

 in which it is most likely to be discovered : South Wales 

 and the Lakes seem very probable. In too many counties 

 to be referred to the " local " type ; yet known in too i^y^ 

 to be strictly " British." 



