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Wulfenia carinthiaca 'Alba'
Tubular white flowers on tall stems and scalloped evergreen foliage.
Wulfenia carinthiaca 'Alba' is the white-flowered form of a plant that is usually blue, with spikes of tubular white flowers above the leaves in late summer, compact enough to find a place in the rock garden. The dark-green scalloped foliage is evergreen.