A study of Rovno amber revealed two species of liverworts in the genus Frullania (Frullaniaceae, Marchantiophyta) that are new to the Late Eocene flora of Rovno amber. Both species are characterized by the mammillose anterior surface of the ventral lobules. One of these, F. pycnoclada Grolle, was described previously from Eocene Baltic amber, whereas the other species, F. vanae Mamontov, J.J.Atwood, Perkovsky & Ignatov, is described here as new. Frullania vanae differs from F. pycnoclada in the shape of the stem and branch underleaves, the shape of the stem leaf lobules, and in the areolation of the leaf lobe cells.
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3 August 2020
Hepatics from Rovno amber (Ukraine): Frullania pycnoclada and a new species, F. vanae
Yuriy S. Mamontov,
John J. Atwood,
Evgeny E. Perkovsky,
Michael S. Ignatov
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The Bryologist
Vol. 123 • No. 3
Fall 2020
Vol. 123 • No. 3
Fall 2020
Eocene
Europe
Fossil liverworts
Porellales
taxonomy