A new species of Begonia section Parvibegonia (Begoniaceae) from Thailand and Myanmar
Begonia tenasserimensis sp. nov. belongs to Begonia sect. Parvibegonia and is endemic to the hills of the Tenasserim Range, based on specimens from Peninsular Thailand and Tenasserim Division in Myanmar. The species is restricted to karst limestone and has been assessed as Vulnerable according to IUCN criteria.