ilgaris) of dune heaths, dune bushland or scrub, and dune rest.

Physically and physiologically dry habitats, with the accompanying plant communities of sand dunes and sandy heaths with little humus in the soil.

mineral salts, especially calcium carbonate, often rich in acidic humous compounds, and characterized by oak and birch woods, siliceous pasture, and heaths with much acidic humus in the sandy soil.

The former is poor in Cruciferae, Caryophyllaceae, Umbelliferae, Primulaceae and Labiatae; but for the occurrence of Calluna in Newfoundland it would have no heaths.

The vegetation of the subregion is rich in shrubs: myrtle, bay, Cistus, Pistacia, A rbz;tus, heaths in its western portion, and the ground-palm (Chamaerops).