320 baker's north YORKSHIRE. 



Hypochoeris glabra L. English type. Native. Area 3. 

 Range o-ioo. In a sandy field near Rillington, with 

 Ornithopus, etc.; G. Webster, 1888! 



Hypochceris radicata L. British type. Native. Area 

 general. Range 0-500. Common upon grassy banks, ascending 

 in Teesdale to the falls of Maize Beck. 



Lactuca virosa L. Germanic type. Native. Subxero- 

 philous. Area 8765432 i. Range 0-150. In the west 

 on the walls of Richmond Castle, Easby Abbey, and Jerveaux 

 Abbey, and about the Magnesian Limestone at Thorp Arch. 

 In the Central Valley in dry ground at Acomb, Rufforth, Skip 

 Bridge, Tang Hall, Sandhutton, Thorn ton-le-Street, etc. In 

 Cleveland at Stokesley and in Mulgrave Woods. On the east 

 at Byland Abbey, Appleton-le-Street, and Cayton. 



Lactuca muralis Less. English type. Native. Area 

 general. Range 0-450. Frequent in woods and shaded places, 

 especially amongst the hills, ascending to Upper Whitfield 

 Force, Hell Gill, and the Main Limestone Scars of Harlen Fell, 

 Copperthwaite Moor, and Punchard's Gill. 



Sonchus arvensis L. British type. Colonist. Area 

 general. Range 0-300. Common in cultivated fields through- 

 out the lower zone, ascending to the oat-fields of the Hambleton 

 plateau over Hawnby. 



Sonchus asper Hoffm. British type. Native. Area general. 

 Range 0-400. Common in waste ground, ascending to the 

 Underset Limestone Scars of the western slope of Kisdon, and 

 the Main Limestone Scars of West Stonesdale Moor. 



Sonchus oleraceus L. British type. Native. Area 

 general. Range 0-400. Common in waste ground, ascending, 

 with the preceding, to Hook Mill Scar, Kisdon. 



Crepis taraxacifolia Thuill. English type. Area 3. 

 Range o-ioo. In a limestone quarry at Hutton Bushell; 

 W. Bean, fun. ! 



Crepis virens L. British type. Native. Area general. 

 Range 0-350. Common in cultivated fields and on grassy banks. 



