Sisymhrium.] CRUCiFERiE. 21 



There can be little doubt that C. sylvatica is the plant 

 recorded under the name of " (7. tmpatiens," as growing at 

 Shane's Castle (Phytologist, 0. S., Vol. v., p. 185). 



2. C. pratensis (Linn.) — Lady's Smoch. 

 Districts 123456789 10 11 12 

 Lat. 51°-56°. Throughout Ireland. 

 Type in Great Britain, British. 



Damp meadows and marshy places ; common. Fl. April, 

 May. 



3. C. amara (Linn.) — Common Bitter Cress. 

 Districts ---__-___ lO-g^ 

 Lat. 540-55°. North-east of Ireland. 

 Type in Great Britain, British, inclining to Germanic. 



Wet meadows and borders of streams; very rare. FL 

 May, June. 



10. Derryloan grave-yard, near Cookstown, Tyrone ; Flor. 

 UUt. — 12. Banks of the Lagan, near Belfast (Mr. D. Orr), 

 Flor. Ulst. and Fhr. Belf. Wet meadows near Toombridge, 

 and in Castle Dawson demesne, by the side of the Mayola, 

 Derry ; D. M. 



^ ^Hesperis matroncdis (Linn.), Dame's Violet, occurs occa- 

 sionally in fields and waste places, but only as an escape 

 from cultivation.^ Lf- ^ — S-CtSu 



SISYMBRIUM Linn. 

 1. S. offtcinale (Scop.) — Hedge MvMard. 

 Districts 1 2 3 4 5 ^ ^ 8 9 10 11 12. 

 Lat. 51°-56°. Throughout Ireland 

 Type in Great Britain, British. 



Waste places, banks, and roadsides, &c. ; common. Fl. 

 June, July. 



2. t S. Irio (Linn.) — London Rocket. 

 District ____5------- 



Lat. 58°-54°. East of Ireland — County of Dublin only. 

 Type in Great Britain, English. 



Waste places, roadsides, walls, &c. ; very local. Fl. May 

 to July. 



5. Common about Dublin, Glasnevin, and Clontarf. 



