High Quality Content by WIKIPEDIA articles! Rhodochiton is a genus of flowering plants within the family Plantaginaceae. There are three species in this genus, the most commonly grown is R. astrosanguineum, (syn. R. volubile) the purple bell vine. Native of woodland in Mexico, this attractive plant scrambles through the undergrowth and produces dark purple tubular flowers within a long lasting, papery calyx. Propagation is by seed or cuttings. The two other species, sometimes included in Lophospermum are R. hintonii and R. nubicola.