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Discosoropteris
Genus Discosoropteris Pšenička, W.-M. Zhou, C.K. Boyce, Votočk. Frojd., Bek, Opluštil, Jun Wang bis Rev. Palaeobot. Palynol., 299(104608): 2. 22 Jan 2022
- Name
- Discosoropteris
- Rank
- Genus
- Authors (Pub.)
- Pšenička J.
Zhou W.-M.
Boyce C. K.
Votočková Frojdová J.
Bek J.
Opluštil S.
Wang J.
- Publication
- Two new leptosporangiate ferns from in situ volcanic ash of the Whetstone Horizon (Kladno Formation, Pennsylvanian), Pilsen Basin, Czech Republic [2022/1]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 299
- Issue
- 104608
- Page number
- 2
- Year
- 2022
- Parent Taxon
- [Class] Pteridopsida
- Fossil Status
- foliage (fertile)
- Type
- Discosoropteris chlupata
- Diagnosis
- Frond tripinnate. Rachis densely covered by multicellular uniseriate trichomes across all orders. Presence of anadromous pinnules. Vegetative and fertile pinnules sphenopteroid, also bearing trichomes. Leptosporangia aggregated into massive disc-shaped hemispherical sori on abaxial surface along midvein or lateral veins. Sori contain up to 80 annulate sporangia. Individual sporangia immersed in a tangle of uniseriate multicellular trichomes. Annulate sporangia ovoid or pyriform, very shortly stalked. Oval to subtriangular trilete microspores are laevigate, microgranulate, microspinate, or finely reticulate.
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