158 FLORA OF THE EAST RIDING OF YORKSHIRE. 



VERBENACE^. 



1 2 17. Verbena officinalis. Linn., 67. 



(Vervain). 

 Native, Eng., 2. Aug., II. 



Onl)- occasionally in dry places ; Dunswell Lane, near 

 Cottingham* ; no record from any other station. 



LABIATE. 



1 22 1. Mentha viridis. Linn. 

 Alien. 



Well established by the Derwent in Welham Springs 

 (M.B.S.). 



1222. M. piperita. Linn., 68. 

 (Pepper Mint). 



Native, Eng., 3, 4, 6, 7. Aug., III. 



Several places on the Wolds (B) ; Newbald Springs*, var. 

 officinalis {Hull) ; in ditch side near Elloughton (C.W.) and 

 Newsholme, Wressle (J.B.). 



1224. M. hirsuta. Huds., m. 



(Water Mint). 

 Native, Brit., 1-7. Aug., III. 



Common in all dykes. 



1225. M. sativa. Linn., 82. 

 Native, Brit., 1-7 Aug., I. 



Skipwith Common in damp places, 1900.* 



1230. M. arvensis, Linn., 105. 



(Corn Mint). 



Colonist, Brit., 1-7. Aug., I. 



Common in cornfields, but chiefly in Derwentland. 



