B. pengchingii

Perennial monoecious herb, 10–20 cm tall. Tubers globose or subglobose, c.10 mm in diam., with numerous fibrous roots. A distinct species, closest to Begonia discreta in having 1 or 2 elongate-cordate symmetrical or sub symmetrical leaves and inflorescence arising from the tuber. It differs in having 2 tepals in the staminate flowers (not 4), variegated leaves, and one enlarged abaxial wing on the fruit, with the others reduced to small ridges (not 3 subequal wings). The leaf variegation is very similar to that in Begonia curtisii Ridl., but that species (in sect. Parvibegonia A.DC.) has asymmetrical leaves and 2-locular fruit.

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