The Collaborative International Dictionary of English v.0.48:

Velvetleaf \Vel"vet*leaf`\, n. (Bot.)
   A name given to several plants which have soft, velvety
   leaves, as the Abutilon Avicennae, the Cissampelos
   Pareira, and the Lavatera arborea, and even the common
   mullein.
   [1913 Webster]