Draba.'] crucifer^. 25 



banks at Baldoyle ! plentiful ; D. M. By the sea at Port- 

 mamock, in considerable quantity ; Mr. T. ChancUee. , 



This plant does not appear to have been noticed near 

 Dublin by the older botanists. First found at Portmarnock in 

 1837, it has rapidly increased since that date. 



[Diplotaxis tenuifoUa (DC.) — In August, 1840, Professor 

 C. C. Babington gathered a single plant ^' somewhere near 

 the harbour" at Westport, Mayo, where the seed had 

 probably been accidentally introduced.] 



[ Alyssum calycinum (Linn.) and "A. minimurn" are recorded 

 by Mackay [Addend(£) as having been found on a sandy bank 

 near the farm-house at Portmarnock, in 1817 ; and again in 

 a sandy field near the same place in 1837. We believe that 

 both names, and also " Clypeola Jonthlaspi" of Mackay's 

 " Catalogue," refer to the same species, which has not been 

 recently observed, and was, no doubt, introduced in this 

 locality.] " <iM. A • '/ . ^ K^/l^ 



y. ^ l-DRABA JAnn.' 



1. D. incana (Linn.) — Twisted-podded Whitlow-grass. 

 Districts l------§'9--12 



Lat. 51°-56°. South-west, North-west, and North of Ireland. 

 Type in Great Britain, Highland. 



Mountain rocks, also on sandhills by the sea ; rare, and 

 very local. Fl. June, July. 



1. Cliffs on MacgilHcuddy's Reeks, Kerry; ilor. Hib.^ 

 9. Abundant on limestone cliffs on Eesh Corran, Sligo, nine 

 miles north-west of Boyle; Mr. F. J. Foot. Glenade, 

 Leitrim ; Admired Jones. On Ben Bulben, and other moun- 

 tains in Sligo ; Flor. Hib. On sandhills near Ben Bulben ; 

 J), M. — 12. On Ben Evenagh, and on sandhills at Magil- 

 ligan, Derry ; D. M. 



From sea-level at MagiUigan, and in Sligo, to 1100 feet 

 on Ben Evenagh {D. M.) and 1200 feet on Ben Bulben ; 

 Flor. Ulst. 



2. D. verna (Linn.) — Common Whitlow-grass. 

 Districts 123456789- 11 12 

 Lat. 51°-56°. From South to North of Ireland. 

 Type in Great Britain, British. 



