THE FLORA OF WARWICKSHIRE. 127 



D. muralis, DC. Sand Rocket. 



Denizen : On old walls and sandy places. Rare. June to August. 

 II. Railway banks near Myton ! //. B. ; Whitnash, Harbury, old walls 

 at Warwick ! H. B. 

 Mr. Perry, who lived in Warwick, does not mention this plant. 



SISYMBRIUM. 



S. Sophia, Linn. Flixweed. 



Native : On old walls and rubbish heaps. Rare. May, June. 

 I. In a brickyard, near Bedlam's End. 

 II. Studley Castle and at Donnington, Part., i., 30G; Kenilworth Castle, 

 Cox, Herb. Perry ; in a brickyard, near Myton ; railway, near 

 Warwick, H. B. 

 S. officinale, Scop. Hedge Mustard. 



Native: On banks, roadsides, &c. Common. May to September. 

 Area general. 

 S. Alliaria, Scop. Sance alone, Garlick Mustard. 



Native : On roadsides and banks. Common. April to June. Area 

 general. 



ERYSIMUM. 



E. Cheiranthoides, Linn. Trench- Mustard. 

 Colonist : In fields. Rare. June ? 



1. As a garden weed, Oscott College Grounds, Rev. J. C. 

 II. Kenilworth and Myton, //. B. ; field in the Lawford Road, plentiful 

 in an enclosure in the Newbold Road, R.S.R., 1867. " 38 

 Warwick, Mrs. Russell," Top. Bat., p. G3. 

 HESPERIS. 

 H. matronalis, Linn. Dames' Violet. 



Alien or casual : On river banks, &c. Rare. May. 

 II. Canal bank at Emscote, H. B. ; " in several places by the Stour from 

 Tibbridge to below Tredington ! quite naturalised;" "I have 

 known it abundant for 30 years in many places on both sides 

 of the Stour," F. Tovmsend, M.S. note, Xeivb.] 

 CHEIRANTHUS. 

 [C. Cheiri, Linn. Wallflower. 



Alien : On old walls and ruins. Rare. April to June. 

 II. Walls at Warwick ! Perry, F. C, p. 56 ; walls of Stratford Church ! 

 Cheshire ; Kenilworth ! Y. and B. ; Wroxall Abbey walls ! H. B. ; 

 old walls at Tredington. Newb. 



CARDAMINE. 

 C. amara, Linn. Bitter Cress. 



Native: In marshes and near pools. Locally abundant. May, 

 June. 

 I. Middleton, Ray. Cat. 1G72. Edgbaston Pond, Freeman, Phyt. i., 

 262; Coleshill, &c. 

 II. Harboro' Magna. Rev. A. B.; Kenilworth! Honily ! Y. and B. ; 

 AUesley, Bree, Mag. Nat. Hist., ill., 165 ; Holywell, Alcester, &c. 

 C. pratensis, Linn. Ladies' Smock. 



Native : In moist meadows and on heathy waysides. Common. 

 April, May. Common throughout the county. 

 C. hirsuta, Linn. Hairy -leaved Ladies' Smock, Land Cress. 



Native: On old walls and waysides. Common. March to Septem- 

 ber. In all parts of the county. 

 C. sylvatica, Link. 



Native : In ditches and drains, in woods, and by waysides. 

 Common. May to July. 



