Derwentia arenaria (Benth.) B.Briggs & Ehrend.

Woody shrub to about 1m tall, dying back each year. Leaves linear or with irregular linear lobes, 2-5.5 cm long, 1-3 mm wide, stalkless. Flower clusters mostly opposite, of 50-100 flowers. Flowers bright violet-blue, spring to autumn. Fruit capsules obovoid to about 6 mm long. [Veronica arenaria Benth.]


Sometimes available under the name Cottage Blue which is not a true cultivar.

Source: Spencer, R. (2002). Scrophulariaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.