380 26. HALORAGIACRiE. 



also that of C. platycarpa and that of C. pedunculata ; for 

 since the disunion of these three alleged species, it has 

 become impossible to say what is the true distribution of 

 C. verna apart from the other two. Before this can be 

 done satisfactorily the localities will require to be verified 

 afresh by botanical eyes familiar with the distinctions of 

 the three alleged species. 



384. Callitriche platycarpa, Kiitz. /^ ^^./// Jl 



s 



Area i 2 3 | 5 /l" 8 | 10 ':4 * 13 14 flO * 18. ^ 



South limit in the Isle of Wight and '^^'"^^^ — ? 



North limit in the Hebrides and y^^'^ -±> 



Estimate of provinces 18. Estimate of counties 82. 

 ^/ Latitude 50-^ It British type of distribution. 



Agrarian region. Inferagarian — Superagrarian zones. 



Descends to the coast level, in the Channel. 



Ascends probably to 400 yards, in East Highlands. 



Range of mean annual temperature 51 — 43. 



Native. Tnundatal (and Lacustral ?) The distribution 

 of this species, as above given, will be understood to be 

 only something between an outline and a conjecture, which 

 the data in my possession do not enable me to fill up and 

 malje certain. The latitude is left doubtful, because the 

 species will likely be found in Orkney and Shetland ; in 

 which case, the present apparent limit of 59 will be carried 

 to 61. a 



385. CALLfTRicHE (pedunculata) De C. ^^'^■^'^■/'■'^^ 



^ I 



Area 1 2 3 * 5 4 7 8 9 10 i * f -(f 15 16 17 18. 



South limit in Cornwall, Isle of Wight, Sussex. i* 



