Hepatics from Rovno amber (Ukraine): Frullania pycnoclada and a new species, F. vanaeстатья
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Дата последнего поиска статьи во внешних источниках: 16 декабря 2020 г.
Аннотация: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 arecharacterized by the mammillose anterior surface of the ventral lobules. One of these, F. pycnocladaGrolle, was described previously from Eocene Baltic amber, whereas the other species, F. vanaeMamontov, 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 theareolation of the leaf lobe cells.