44. COMPOSIT.E. 127 



663. Pyrethrum Parthenium, Sm. 



Area 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Ross, Moray, Dumbarton. 



Estimate of provinces 17. Estimate of counties 75. 



Latitude 50 — 58. British type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 52 — 47. 



Denizen. Viatical, Septal. Probably introduced to 

 Britain, but so well established in numerous localities that 

 it cannot now be treated as an alien ; nor can any hard 

 line of distinction be drawn between the character of the 

 habitats, beyond the general rule, that the farther we go 

 northward the more suspicious and distrusted they are 

 found to be. 



/* ■ '^'^^. 664. Pyrethrum iNODORUM, .Sjm. 



664, b. Pyrethrum maritimum, Sm. 



Area general. 



South limit in Cornwall, Isle of Wight, Kent. 

 North limit in Shetland, Hebrides, Caithness, i e^^^ 

 Estimate of provinces 18. Estimate of counties 82. 

 Latitude 50—61. British type of distribution. 

 Agrarian region. Inferagrarian — Superagrarian zones. 

 Descends to the coast level, in the Peninsula. 

 Ascends to 400 or 450 yards, in East Highlands. 

 Range of mean annual temperature 52 — 42. 



