White bat flower (Tacca integrifolia).

Varieties of Batflowers
The Tacca genus is mostly native to Asia, and the plants are considered collector's items due to their unusual flowers. The white batflower (Tacca integrifolia) is a relative newcomer to the plant scene. It was preceded by the black batflower (Tacca chantrieri), which looks similar to the white batflower but has dark bracts flaring above its flowers. The white batflower also grows about twice as large as its cousin, with correspondingly larger flowers.