arum

We found the tubers (but not the flowers) of an arum, which the Tibetans collect and make of it a very unpalatable bread.

Broad, rank, green arum leaves crowded each other in places.

Stubbs went through the elder trees, whose buds were growing big and purple, and he dug up and ate the wild arum tubers.

Richardia, ri-chr′di-a, n. a small genus of South African herbs of the Arum family, including the calla-lily.