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: Gen. Mac Arthur. The best of all the large spiral curls grown here. Plant very vigorous. Almost no green center but some green that follows major veins out into broad silver-green zone that breaks into irregular blotches over the purple-brownish-green margin.
