Begonia ferruginea var. ferruginea Begonia ferruginea var. dilatata
Begonia ferruginea Begonia magnifica Casparya ferruginea Casparya ferruginea var. holtonis Casparya ferruginea var. ferruginea
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024