Synonyms for Velvet Plant (same or very similar meaning)
WordNet sense 1 (any of various plants of the genus Verbascum having large usually woolly leaves and terminal spikes of yellow or white or purplish flowers):
mullein, flannel leaf
WordNet sense 2 (Javanese foliage plant grown for their handsome velvety leaves with violet-purple hairs):
Gynura aurantiaca, purple velvet plant, royal velvet plant
From the ODE community, based on WordNet
add/edit