FLORA OF THE EAST RIDING OF YORKSHIRE. 1 45 



1092. Gentiana Pneumonanthe. Linn., 30. 



(Marsh Gentian). 



Native, Eng., 2, 6, 7. Sept., I. 



Uncommon ; Ross and Spalding- Moors ; Everingham, and 

 other places near Pocklington (B.) ; near Beverley (Dr. Hull 

 "Beverlac") ; AllerthorpeCommon(C.W.) ; Skipwi'th Common 

 (W.N.C.) ; Houghton Woods (G.N.). Now only, perhaps, 

 on the Derwent tract (see remarks under Calluna Erica, 

 1038, above). 



1095. G. Amarella. Lhm., 8i. 



(Small-flowered Gentian). 

 Native, Brit., 3, 4. Aug., H. 



Common on the Wolds, with Blacksto7iia at Willerby. 



1097. G. campestris. Linn., 85. 



(Field Gentian). 



Native, Brit., 2, 3, 4. Aug., I. 



Driffield Wold (M.H.) ; rare compared with the preced- 

 ing ; near Beverley (Dr. Hull). 



1099. Menyanthes trifoliata. Z/«w., no. 



(Buck Bean). 



Native, Brit., i, 2, 5, 6, 7. June I. 



Common generally ; Hornsea Mere, at the edge of which 

 there are extensive beds ; at Pulfin Bend, near River Hull ; 

 Lowthorpe; Hall Ings, Cottingham, 1898*; Riccall Common 



(W.N.C). 



HOC. Liwnanthemum peltatum. S. P. Gmel. 



(Waterlily-like Villarsia). 



Alien. 



Introduced in several park ponds, as at S. Cave Castle* ; 

 a wonderful piece of " mimicry," being apparently a minia- 

 ture yellow waterlily, although of a widely different family. 



