128 



4. CRUCIFERiE. 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagi-arian — Superagi-arian zones. 



Descends to the coast level, in the Peninsula. 



Ascends, at the coast level, to Shetland. 



Range of mean annual temperatiu-e 52 — 46. 



Native. Littoral. Reported from thuty counties, but 

 as it is doubtless often confused with the globose-fruited C. 

 officinalis, I put the estimate a step higher in my series. 

 With the two authorities above cited, in addition to Lowe's 

 Orkney list, I have not felt myself at liberty to exclude the 

 North Isles from the area of this species, although it would 

 be desirable to obtain some confirmatory evidence of its 

 occmrence therein. 



72, d. CoCHLEARiA ANGLIC A, Linn. 



Area 1 2 3 4 5 6 7 [8] 9 * 11 ^l" 13 14 15 16. LuUj}/\ 



South limit in Devon, Isle of Wight, Kent. l^I'^^w^. 



North limit in Moray and Argyleshire, 



Estimate of provinces 14. Estimate of coimties 30. 



Latitude 50 — 58. British type of distribution. 



Agi'arian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends, on the coast level, northward to Moray. 



Range of mean annual temperature 52 — 47. 



Native. Littoral. Less fi-equent, and perhaps more of a 

 marsh plant, than either of the two preceding shore species. 

 I must confess, however, that I find difficulty in fully dis- 

 tinguishing the specimens, in some instances ; the present 

 apparently passing to danica, on one side, and to offici- 

 nahs, on the other. Though this may likely enough be 

 found on the coast of Lincolnshire, I reject the Trent pro- 



