Begonia rajah Ridl.

Endemic in Peninsular Malaysia, Terengganu (without specific locality). Apparently restricted in its distribution because, despite continuous botanical collecting in Terengganu and elsewhere in Peninsular Malaysia, it has not been re-found since it was first collected in 1892 (Kiew, 2005). Begoniarajah, B.yenyeniae, B.reginula and B.foxworthyi compared. Character Begonia rajah Begoniayenyeniae sp. nov. Begonia reginula Begonia foxworthyi Leaf: texture thickly succulent polished shining prominent bullate thinly succulent thinly succulent slightly raised in between veins thinly succulent Surface moderately raised in between veins glossy, veins slightly impressed Leaf shape subrotund orbicular-reniform broadly ovate almost rotund apex short- pointed apex abruptly acute apex rounded apex abruptly attenuate angular not angular angular scarcely angular Tepal no. in male flower 4 4 2 2 Tepal no. in female flower 3 3 2 2 Outer tepal size (mm) 6–8 × 5–8 5–7 × 6 6–10 × 9–11 4–6 × 4–6 Outer tepal: shape widely ovate or cordate rotund widely ovate or rotund broadly ovate to rotund rounded apex obtuse rounded rounded or acute subcordate subcordate base subcordate rounded Stipule: shape lanceolate-oblong or triangular narrowly triangular, narrowly triangular, narrowly triangular size (mm) 15–20 × 10–12 9–12 × 3–4 5–7 × 2–3 7–12 × 2–5 colour Brownish-pink to scarlet light yellowish-green sometimes with a faint pink tinge pale greenish yellow or reddish yellow red Keel on stipules from base to apex from base to apex absent from base to apex Bract: shape broadly ovate, bowl-shaped elliptic-ovate or obovate, curved or flat obovate, curved or flat obovate, flat size (mm) 5–8 × 7.5–8 2–3 × 1.5–2 3–4 × 1–3 4–6 × 2–4 Hair density: petioles hairy sparsely hairy, more hairy near leaf base sparsely hairy densely hairy stipules densely hairy sparsely hairy hairy densely hairy peduncles hairy sparsely covered, hairs inconspicuous without hairs sparsely hairy Ovary colour pink or pale pink light yellowish-green light yellowish-green reddish or dark pink

Begonia rajah is a species of flowering plant in the family Begoniaceae, native to Terengganu state, Peninsula Malaysia. It typically has striking bronze leaves and contrasting green veins, and is best suited for terrariums.