24 CBtrciFEE^. [Diplotaxis. 



About Rush, Skerries, Swords, Finglas, and Glasnevin, in 

 corn and potato fields ; Ir. Flor. — rl2. At Falls Road ; and 

 Carrickfergus ; Flor. UlM. Under hedges, near Kilrea, 

 Derry ; D. M. 



2. S. arvensis (Linn.) — CharlocL 

 Brassica Sinaptstrum (Boiss.) Bentham. 



Districts 123456789 10 11 12 

 Lat, 51°-56°- Throughout Ireland. 

 Type in Great Britain, British. 



Cultivated ground and waste places ; common. FL May 

 to August. 



From sea-level to 600 feet in Derry. 



3. S. alba (Linn.) — White Mustard. 

 Brassica alba ^Boiss.) Bentham, 



Districts 12^45 6-89--- 

 Lat. 51»-54°.— South and Middle of Ireland. 

 Type in Great Britain, English, inclining to British. 



Cultivated fields, especially on a calcareous soil ; local, and 

 rather rare. Fl. June, July. 



1 and 2. Near Cork; Flor. Cork and /. C — 2, Near 

 Glanworth, Kilcrumper, and Fermoy, rare ; Mr. T. Chandlee. 

 In Waterford, /. G. — 4. Near Bray, &c., inWicklow; D. M. — 

 5. At Portmarnock, and about Dublin ; Flor. Hit. BaUitore, 

 frequent; /. G. Straffan, KUdare; Mr. J. Douglas. — 6. Near 

 Castle Taylor, Galway; A. G. M. — 8 and 9. Near Foxford, 

 Mayo (perhaps sown with the crops) ; A. O. M. 



DIPLOTAXIS De Cand. 

 1. I D. muralis (D Q,.)—Wall Mustard. 

 Sinapis muralis (Br.), Brassica muralis (Boiss.) Bentham. 

 Districts l?i^-_5---'---- 

 Lat. 51° or 52°-54°. East coast of Ireland. 

 Type in Great Britain, English. 



Sandy banks, fields, and waste places near the sea ; very 

 rare. Fl. June to August. 



1. ? On the strand by the Lower Glanmire Road (Mr. Alex- 

 ander) ; Flor. Gorh. Probably an error ; I. G. Ardmore, 

 "Waterford, on the cliffs and sand ; Mr. J. Goohe. — 5. Sandy 



