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journalAt: American Journal of Botany, 73, 4 By: Crepet W. L., Taylor D. W.
journalAt: BMC Evolutionary Biology, 20, 150 By: Li Y., Cui Y.-M., Gee C. T., Liang X.-Q., Li C.-S.
journalAt: Comptes rendus hebdomadaires des séances de l’Académie des Sciences, Paris, 145, 2 By: Bertrand P.
bookAt: Princ. Paleobot., Leiden, Chronica Botanica Company By: Darrah W. C.
bookAt: Princ. Paleobot., New York, The Ronald Press Company, 2 By: Darrah W. C.
journalAt: Annual report / Department of Geology and Natural History, Indiana, 13(1883), 2 By: Lesquereux L. C.
journalAt: Ohio journal of science, 29, 5 By: Schaffner J. H.
journalAt: Izvestiya na Botanicheskiya Institut, 10 By: Palamarev E. Kh.
bookAt: Matice Horn-Hutn. Praze, Praha, Matice Hornicko-Hutnická v Praze, Ročník 1925, 1, 1 By: Trapl S.