Benevenagh and Magilligan. The northern elements in the Ulster flora attains specially well-marked development on the magnificent basaltic precipices of Bene- venagh, an isolated hill in Co. Derry (Bed and Breakfasts, Derry, Ireland) lying near the north-western extremity of the basaltic area. The cliff flora there includes :
Draba incana Hieracia (many species)
Silene acaulis Salix herbacea
Dryas octopetala Juniperus nana.
Saxifraga oppositifolia