152 FLORA OF THE EAST RIDING OF YORKSHIRE. 



1153. Linaria vulgaris. Mill., 99. 

 (Yellow Toad-flax, Snap-Dragon). 



Native, Brit., 3, 4. August. 



A xerophilous plant common on the chalk, on railway 

 embankments, and on the sandy tracts of Derwentland. 



1 1 54. L. ViSCida. Moench, 62. 

 (Least Toad-flax). 



Colonist, Eng., 1-7. Summer. 



Quite common in the East Riding on stony or gravelly 

 places ; Walkington (B.) ; S. Cave* ; near Howden (J.B.). 



T155. Antirrhinum majus. Linn. 

 (Great Snap-Dragon). 

 Alien. 



Hessle chalk pits ; an escape, but almost as well estab- 

 lished there as the crimson spur-valerian. 



1157. Scrophularia aquatica. Linn., 72. 



(Water Figwort. " Water Betony "). 

 Native, Eng., 1-7. Aug., II. 



Very common near most Holderness dykes, and in the 

 other divisions as well ; Market Weighton* and Everingham.* 



1 159. S. nodosa. Litm., 109. 



(Knotted Fig-wort). 



Native, Brit., 2, 4. Aug., II. 



Not at all common ; near Beverley (Dr. Hull) ; Burton 

 Constable and Hessle* ; always in wood or plantations. 



Alien. 



1162. Mimulus luteus. Linn. 

 (Yellow Mimulus). 



Driffield Canal, plentiful (C.W.) ; and near River Hull 

 (J.T.H.), always on muddy or wet, gravelly places. 



