What is "hybanthus"

Hybanthus (greenviolet) is a genus of the family Violaceae. This genus name is Greek for "humpback flower", referring to the drooping pedicels of plants that are part of this genus. The genus is grossly polyphyletic and may contain up to nine different genera, of which Pombalia Vand., Cubelium Raf. and Pigea DC. have been previously recognised.