66 FLORA OF THE EAST RIDING OF YORKSHIRE. 



93- Arabis hirsuta. Scop., 96. 



(Hairy Rock Cress). 



Native, Brit., 3, 4, 6. May, III. 



On Wolds, near Beverley (R.T., 1790).* Newbald and 

 Hou<,^hton Moor (C.W.).* Near Heslington Mill (H.J.W., 

 1883). 



96. Cardamine amara. Lum., 75. 



(Large flowered Bitter Cress). 

 Native, Brit., 6. June, I. 



Rare. In old gravel pits, in wet places, near R. 

 Derwent, Kirkham (M.B.S.). Near Howden (J.B.). 



97- Cardamine pratensis. Liim., 112. 



(Cuckoo Flower). 



Native, Brit., 1-7. May, II. 



Very common in Holderness : proliferous and bulbil 

 bearing specimens are frequent near Hornsea. Var. dentata 

 (Havne & Welw.), found in one place near "Gibraltar," 

 R. Hull, 1897.* 



98. Cardamine liirsuta. Linu., no. 



(Hairy Bitter Cress). 

 Native, Brit., 1-7. April, II. 



Very common. One of the early-flowering spring plants. 



99. Cardamine flexuosa. ivif/i.. loi. 



Native, Brit., 2. June, I. 



Near Snuff-mill, Cottingham,* and in Kelsey Hill gravel 

 pits.* Bank of R. Hull, near Beverley.* Hall Ings near 

 Cottingham. 



102. Alyssum incanum. Linn. 

 Alien. 

 Common on the dock waste grounds, Hull. 



103. Alyssum calycinutn. Linn. 

 Alien. 

 In cornfields at South Cave* and Welton (C.W.). 



