We received this plant a while back from Laos as an unknown caudiciform, that came with a photo of the bloom as seen on this page. We thought it resembled a Hibiscus and subsequently a helpful client solved the mystery for us. It is in fact a hibiscus relative, a vining species of Alelmoschus with large ‘classic’ Hibiscus flowers.
Information given to us quotes the source as Stewart Robert Hinsley from a Malvaceae List. He indicates that this species is a perennial found in forest and grassy slopes amongst other habitats from India to Southern China and even Northern Australia.
A radish-like tuber up to about two inches thick supports vine-like stems to about three feet long. Leaves are pubescent and deeply lobed. The large Hibiscus-like flowers can be white to yellow or red. We have learned that this species likes well draining, moist soils and bright, partially filtered light. It is indeed a strange and spectacular plant!