Research Paper

Two new huge-leaved Begonia (Begoniaceae) from Betung Kerihun National Park, West Kalimantan, Indonesia

Agusti Randi, Bina Swasta Sitepu, Junaidi, Mark Hughes

Published on: 01 April 2026

Page: 297 - 302

DOI: 10.6165/tai.2026.71.297

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    Abstract

    Two huge-leaved species of Begonia were discovered during a biodiversity expedition in Betung Kerihun National Park, West Kalimantan in October 2024, which are described in this paper as B. lawar and B. sadtataiana. In the wild, B. lawar leaves can reach a size of 52 × 22 cm, while B. sadtataiana can reach 72 × 38 cm, making it the Begonia with the largest leaves ever recorded in Borneo. Complete descriptions are provided, along with full-color image plates.

    Keyword: Begonia chlorosticta, Begonia kuchingensis, Begonia lawar, Begonia sadtataiana, Kalimantan, west Malesia

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