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. Erect, medium sized leaves, serrate-lobed margins. Central zone dark somewhat bronzy-green following the major veins, moss green band almost covered with silver-green dots, margin as dark a center but somewhat more bronze-toned. As plants grow older, the lobes of later leaves are more marked.
