Begonia is a genus of perennial flowering plants in the family Begoniaceae. The genus contains more than 2,000 different plant species.

Begonia homonyma, synonymously known as Begonia caffra or Begonia rudatisii and commonly known as Large-leaved Wild Begonia in English and Wildebegonia in Afrikaans, is a soft, fleshy perennial with a swollen stem base, red-tinged stems and white or pink flowers in summer. It is an attractive, shade garden plant and pot plant that is also commonly used for traditional medicine in KwaZulu-Natal. Begonia homonyma is endemic to South Africa; this species has been recorded from the more coastal districts of KwaZulu-Natal and Eastern Cape, up to about 900 m above sea level, from the Kei River to Stanger and around Pietermaritzburg and an isolated record from the southern foot of the Lebombo Mountains, in northern KwaZulu-Natal. This species is found on rock falls and cliffs in forest. Begonia homonyma is completely dormant in winter with only tubers remaining to sustain the growth. The tuberous root system enables it to flower and survive even in dry periods. Begonia homonyma is traditionally used to treat chest ailments. Root decoctions are taken to counteract idliso (poison administered in food) and are used as a protective charm.