B. exposita

Monoecious acaulescent herb, 10–30 cm tall. Tuber globose or cordiform, c.5–10 mm in diam., with numerous fibrous roots. The habit resembles that of Begonia putii Craib, B. discreta Craib and B. soluta Craib in terms of the small number of cordate leaves arising directly from a tuber. Begonia putii and B. soluta differ in being smaller plants, with leaves less than 6×6 cm(not up to 15 × 14 cm) and having 4 tepals in the male flowers (not 2). Begonia discreta is a more similar size to B. exposita but differs in having fewer stamens (c.12, not 40–50) and male flowers with 4 tepals (not 2), and in being a higher altitude species (found at c.1350 m, not c.140 m altitude). Begonia exposita further differs from all three species in having succulent leaves (not thin and papery).

• Classification: Species
• Plant Type: Tuberous
• Botanical Section: Diploclinium
• Origin: Asia, Thailand
• Originator: Phutthai & M.Hughes
• Date of Origin: 2017