Snowball Begonia (Begonia opuliflora)
The Snowball Begonia was described in 1854 (or 1856), it is thought to originate from Panama (or Venezuela, according to other sources).
The species’ name appears in lists of extinct species and is thus mentioned here as well.
*********************
*********************
edited: 04.09.2019
Wooly-stalked Begonia (Begonia eiromischa)
The Wooly-stalked Begonia, described in 1917, was restricted to the small island Pulau Betong, Malaysia, it is known only from two collections made in 1886 and 1898.
The habitat is now completely destroyed and this species is definetly extinct.
*********************
*********************
edited: 04.09.2019
Short-stemmed Begonia (Begonia brevicaulis)
The Short-stemmed Begonia was described in 1859, it is, or maybe was, endemic to the state of Megalhaya, India, where it was found growing at elevations of about 300 m.
The plant had a bulbous root system, was completely stem-less and had heart-shaped, browdly ovate leaves.
The species is now considered likely extinct.
***
The species should not be mistaken for Begonia brevicaulis T. C. Ku, which is a synonym of the Chinese Begonia sinobrevicaulis T. C. Ku.
*********************
edited: 04.09.2019