What is "umdhlebi"

Umdhlebi or umdhlebe is an unverified plant species purported to originate in Zululand, South Africa. Henry Callaway's The Religious System of the Amazulu, published in 1870, records several stories of the tree; an additional report appeared in a letter to the journal Nature on 2 November 1882 by Reverend G. W. Parker, a missionary in Madagascar who said the plant was poisonous.

To date, no specimen of the umdhlebe has ever been recovered, and other than 19th-century anecdotal evidence, no further verification is known to exist.