67 



118. Draba verna (Whitlow-grass). 



Knaresborough, W. K. Thorp Arch, J. E. On walls, Pannal, 

 T. H. "Wetherby, J. J. Dewsbury, P. F. L. Brockendale, near 

 Ackworth, and road near Hampole Stubbs, A. C. D. York 

 (neighbourhood), B. B. Le T. Clapham, B. N. S. Smeeton Crags, 

 B. N. S. (frequent). Malham, B. N. S. Ripon, R. N. C. 



Walls, rocks, and dry banks. 



120. Draba nmralis (Wall Draba). 

 Malham, B. N. S. Malham, J. A. 



Rocks and walls in limestone mountainous districts. 



121. Draba incana. 



Clapham, B. N. S. Malham, B. N. S. Whernside, B. N. S. 



124. Alyssum calycinum (Sweet Alyssum). 



Wetherby, J. J. Langwith, near York ; Poppleton, near York ; 

 Apombe, near York, H. I. 



Waste, dry pastures, but more frequently near the sea. Probably an 

 escape from cultivation. 



126. Camelina sativa (Gold of Pleasure). 



Meanwood, J. A. Wetherby, J. J. Weetwood, W. K. Hor- 

 bury (on old wall), P. F. L. 



Waste places, where seeds are screened. Imported, appearing occasionally 

 in com and other cultivated grounds. 



128. Thlaspi arvense (Pennycress). 

 Garforth. Bishop Wood. 

 Fields and waysides. Not common. 



130. Thlaspi alpestre (Alpine Pennycress). 

 (Var. occitanum) Malham, B. N. S. 



Mountainous pastures in limestone districts. Uncommon, 



131. Iberis amara (Bitter Candy Tuft). 



Calverley Wood, B. N. S. 

 As an escape. Often introduced with com seed, limestone districts. 



132. Teesdalia nndicanlis (Naked-stalked Teesdalia). 



Cantley, B. N. S. Langwith, near York ; near Grimston 

 Woods, York, B. B. Le T. 

 Sandy and gravelly banks. 



