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Xinhangia
Genus Xinhangia J.-N. Yang, De-M. Wang Biology (Basel), 11(11, 1568): 2. 26 Oct 2022
- Name
- Xinhangia
- Rank
- Genus
- Authors (Pub.)
- Yang J.-N.
Wang D.-M.
- Publication
- A new fern-like plant Xinhangia spina gen. et sp. nov. from the Upper Devonian of China [2022/10]
- Journal
- Biology (Basel)
- Volume
- 11
- Issue
- 11, 1568
- Page number
- 2
- Year
- 2022
- Parent Taxon
- [Phylum] Pteridophyta
- Fossil Status
- stems (wood)
- Type
- Xinhangia spina
- Diagnosis
- Main axes dichotomous. Primary and secondary branches borne alternately and sometimes in triseriate pattern. Vegetative or fertile ultimate appendages arranged alternately on secondary branch. Vegetative ultimate appendages with recurved tips usually dichotomizing 1–2 times. Fertile ultimate appendages usually dichotomizing 1–2 times to terminate in elongated and paired sporangia. Primary xylem mesarch, clepsydroid-shaped with two protoxylem poles, and surrounded by secondary xylem. Secondary xylem rays uniseriate. Tracheid wall with scalariform
thickenings or circular to elliptical bordered pits.
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