American Horticultural Society, October 1952, pg. 237-259; Concerning Rex Begonia, by B. Y. Morrison The following descriptions are recorded from observation notes made of the living collection during 1951-1952: Cathayana X Pustulata Ziesenhenne 1950. Erect stems green, white, hairy. Leaves large, soft, major vein bright light green, blade almost covered with silver-green like fine silver etching.
