256 baker's north YORKSHIRE. 



brough ; IV. Foggitt. Reported also by Robson from Scarborough. 

 Considered by A. De CandoUe as a plant introduced into Europe 

 from Temperate America. 



Coronopus Ruellii Gaertn. English type. Native. Area 

 8765432 I. Range 0-200. Not unfrequent by road-sides 

 and in waste ground in the low country. Richmond, Leyburn, 

 Bedale, Camphill, Thirsk, York, Middlesbrough, Guisbrough, 

 Great Ayton, Staithes, Coatham, Sandsend, Whitby, Terrington, 

 Scarborough, etc. It ascends to the eastern extremity of 

 Leyburn Shawl. 



Thlaspi arvense L. British type. Colonist. Area 

 87.5432. Range 0-200. Cultivated iields in the low 

 country, rare. Richmond, Leyburn, Camphill, Guisbrough, 

 Hutton Rudby, Thirsk, Hovingham, Castle Howard, etc. 



Thlaspi alpestre L. Intermediate type. Native. Montane. 

 Area 8 7. Range 250-500. Abundant about the Hind Rake 

 and Copperthwaite lead-mines, near Reeth. It is also reported 

 by James Ward from Hurst Head, and I have seen it sparnigly 

 with Armeria at Woodhall. In great abundance along the 

 banks of Ellerbeck, near Hawbank lead-mines, and about the 

 old lead-mines in Oxclose, Carperby ; J. Percival. This lead- 

 mine plant, in North Yorkshire as at Malham, is all T. occitanum 

 Jordan. The plant which grows in the fir plantation on the 

 Durham side of the Tees at Winch Bridge is authenticated by 

 Boreau as T. sylvestre. 



Capsella Bursa-pastoris L. British type. Native. Area 

 general. Range 0-400. Common in cultivated fields and waste 

 ground, ascending to Upper Cronkley and Sleightholme. 



Hutchinsia petraea R.Br. Intermediate type. Native. 

 Montane. Xerophilous. Area 8 7. Range 200-500. Not 

 unfrequent amongst the limestone scars of the western dales. 

 In the West Swale district on Copperthwaite scars and other 

 places about Reeth and Hurst. In the Yore district from 

 Hawes eastward to Aysgarth in several places ; the Buttertubs 



