Lady Fern – Athyrium filix-femina

by | Dec 9, 2023 | Ferns, NE Native Ferns

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Hypericum miocenicum is an extinct species of the genus Hypericum. Seeds of the species have been recorded from the Late Oligocene in Germany (Saxony and Lusatia), the Late Miocene in Poland (Poznan), and the Pliocene in Germany (Thuringia). It differs from H. septestum, a more frequently found Hypericum paleospecies, by its thinner foveole walls and the shape of its surface cells, which are more rectangular.[1]

Taxonomy

While Hypericum miocenicum has sufficient identifying characteristics to place it within the genus Hypericum, there is not enough surviving detail to assign it to any subdivisions within the genus.[2]

References

  1. ^ Meseguer, Andrea S.; Sanmartín, Isabel (30 June 2012). "Paleobiology of the genus Hypericum (Hypericaceae): a survey of the fossil record and its palaeogeographic implications". Anales del Jardín Botánico de Madrid. 69 (1): 97–106. doi:10.3989/ajbm.2306. hdl:10261/167029. ISSN 1988-3196.
  2. ^ Meseguer, Andrea S.; Lobo, Jorge M.; Ree, Richard; Beerling, David J.; Sanmartín, Isabel (13 November 2014). "Integrating Fossils, Phylogenies, and Niche Models into Biogeography to Reveal Ancient Evolutionary History: The Case of Hypericum (Hypericaceae)". Systematic Biology. 64 (2): 215–232. doi:10.1093/sysbio/syu088. ISSN 1076-836X. PMC 4380036. PMID 25398444.
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