Rose Myrtle

Rhodomyrtus tomentosa, the Rose Myrtle, is a dense evergreen shrub with distinctive three-veined leaves, glossy above and thickly grey-felted beneath, so the whole plant flickers between green and silver in wind. Rose-pink flowers with a boss of stamens open through spring and summer and are followed by edible purple-black berries.
It handles poor sandy ground, coastal exposure and full sun without irrigation, which makes it a useful informal hedge and bank cover in exactly the conditions that defeat softer shrubs.
Rose Myrtle holds a difficult sandy bank together and flowers while it does it.