Hosta Heartbeat Brugmansia The dark green leaves appear

The dark green leaves appear to have been heavily brushed in a horizontal direction with white paint

The answer

author of Ferns for American Gardens

After killing these throughout the garden

Hosta Heartbeat Brugmansia The dark green leaves appearThis new introduction from one of the world's top hosta breeders Don Dean is essentially a small leafed H. 'Fortunei Aureomarginata'. Each 30" wide, perfectly formed clump is composed of small, shiny, dark green, heart shaped leaves, each surrounded by a perfectly placed, creamy gold margin. In midsummer, the clumps are topped with light lavender flowers atop 20" scapes just delightful!