Fig. 1. Begonia exposita Phutthai & M.Hughes. A, Habit and habitat of exposed limestone
(Phutthai 262); B, tuberous stem; C, pubescent hairs on petioles; D, minute pubescent hairs on
lamina and leaf margin; E, hairs on bracts and outer tepals; F, inflorescence; G, male flowers;
H, female flowers; I, capsule (B–E from Phutthai 222).
