120 4. CRUCIFER^. 



fordshire T. perfoliatum has been occasionally mis-named 

 T. alpestre. A limestone plant (See Hutchinsia). 



63. Capsella Bursa-Pastoris, De C. 



Area, general. 



South Umit in Cornwall, Isle of Wight, Kent. 



North limit in Shetland, Orkney, Hebrides. 



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 350 yards, in East Highlands. 



Range of mean annual temperature 52 — 43. 



Native. Agrestal and Viatical. Most plentifully distri- 

 buted throughout the cultivated lands, and veiy frequent 

 also by road-sides ; a weed in almost every garden. 



64. Hutchinsia petr^ea, iwM*. A-^. /u, Tf^.^O. 



Area 1 * (3) * 5 6 7 8 * 10. 



South limit in Somerset and Pembrokeshire. 



North limit in Yorkshire and Denbighshire. 



Estimate of provinces 6. Estimate of counties 10. 



Latitude 51 — 55. Local type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zone. 



Descends, probably, to a slight altitude in South Wales. 



Ascends to about 450 yards, in North Wales. 



Range of mean annual temperature 49 — 44. 



Native. Rupestral. On limestone rocks, and about 

 walls, in the western provinces, and hilly (westerly) sides 

 of the two north-eastern provinces of England, those of the 



•/j^ 



