Journal of the International Aroid Society, Inc.
Volume 31, Number 1 (2008); Pages 90-97
Twenty-million-year-old fruits and seeds of Pistia (Araceae) from central Europe
By Z. Kvacek and Josef Bogner     (Buy)


First fossil fruits of Pistia (Araceae, Aroideae) are reported from the Early Miocene lignite in North Bohemia. They co-occur with dispersed seeds identified as Pistia sibirica Dorofeev, a morpho-species spread in the Late Oligocene and Early to Middle Miocene deposits of western Eurasia. These fruits remain different only in smaller size from those produced by Pistia stratiotes L., a pantropic floating aquatic aroid and the only extant species of the genus.


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