Verbatim text: Chin, T. C. and H. W. Youngken. 1947. The cytotaxonomy of Rheum. Amer. J. Bot. 34: 401–407.
Author: Chin, T.C., Youngken, H.W.
Year: 1947
Title: The cytotaxonomy of Rheum
Journal: Amer. J. Bot
Volume: 34
Pages: 401–407