•27. LYTHRACE/E. 383 



Latitude 50 — 56. English type of distribution. 



Agrarian region. Inferagrarian— Midagrarian zones. 



Descends to the coast level, in the Channel province. 



Ascends to 50 or 100 yards, in Scotland } 



Range of mean annual temperature 51 — 47. 



Native. Lacustral. The distribution of the present 

 species seems to be less known than that of the other; 

 and it is probable that some of the localities are incorrect- 

 ly referred to C. demersum, since botanists usually assign 

 this latter name to any examples which they see without 

 finding them in fruit. The counties of Sussex, Kent, 

 Essex, Suffolk, Norfolk, York, Edinburgh and Linlithgow 

 have been indicated, more or less doubtfully, for C. sub- 

 mersum. 



/is/r/^. //J 389. Lythrum hyssopifolium, Linn. 



Area * * 3 4 5 6 * 8 * 10. 



South limit in Kent and the Isle of Wight ? 



North limit in Derbyshire and Yorkshire ? 



Estimate of provinces 6. Estimate of counties 12. 



Latitude 50 — 54. English type of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends probably to the coast level, in England. 



Ascends to 50 or 100 yards, in England. 



Range of mean annual temperature 50 — 48. 



Native. Inundatal. Scarce, and of uncertain occur- 

 rence in the few localities recorded for it. I have seen 

 specimens from Caixibridgeshire only. In the New Guide 

 thirteen counties are recorded for it ; but in how many of 

 these it could now be found, or has ever been found, I 

 am wholly unprepared to say. Dr. Bromfield marks it as 

 an uncertain native of the Isle of Wight. 



