This member of the Begoniaceae family was given this name by John Lindley in 1842. It is found in Guatemala and south-western Mexico, growing in a rich soil with some water and little to some sun. The stem can grow to four centimetres in diameter, the entire plant to 60 centimetres in height. The flowers are white to pale pink.
The genera name after Michel Bégon, 1638-1710, once a governor of French Haiti/Santa Dominica. The species name means 'thick-stemmed'. Coloured engraving by G. Barclay 1842.

