4. CRUCIFER^. 147 



(u h^- '^"'/- ^S^- ^^- Nasturtium officinale, Br. 



Ai-ea, general. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Orkney and lloss-sliire. 



Estimate of pro^ances 18. Estimate of counties 80. 



Latitude 50 — 60. British type of distribution. 



Agrarian region. Inferagrarian — Superagi'arian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperatm'e 52 — 46. 



Native. Paludal. A very frequent plant in ditches and 

 water-covu-ses, until we approach the Highland provinces ; 

 and even in those provinces it would seem not to be rare 

 in their low tracts bordering on the coast-line. I have 

 ventured to include the North Isles within its area, as pro- 

 bable enough, though I can show no better authority than 

 Lowe's list, for its occuiTence northward of Ross-shire. 

 The Rev. G. Gordon marks it " very common " in Moray. 



99. Nasturtium terrestre, Br. 



'rtJlLt Area 1 2 3 4 5 6 7 8 9 10 11 '| 13 14 15 16. 



,io South limit in Devon, Isle of Wight, Sussex. Cn^u^^ . 



North limit in Aberdeenshire and Argylesliire. 



Estimate of pro\4nces 16. Estimate of counties 60. 



Latitude 50 — 58. British type of distribution. 



Agi-arian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean aimual temperatm'e 51 — 47. 



Native;. Inundatal. Pretty frequent in England; but 



