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Hubeiia
Genus Hubeiia J.-Z. Xue, S.-G. Hao, De-M. Wang, Z.-F. Liu Int. J. Pl. Sci., 166(3): 520. May 2005
- Name
- Hubeiia
- Rank
- Genus
- Authors (Pub.)
- Xue J.-Z.
Hao S.-G.
Wang D.-M.
Liu Z.-F.
- Publication
- A new lycopsid from the Upper Devonian of Hubei Province, China [2005/5]
- Journal
- International Journal of Plant Sciences
- Volume
- 166
- Issue
- 3
- Page number
- 520
- Year
- 2005
- Fossil Status
- stems
- Type
- Hubeiia dicrofolia
- Diagnosis
- Herbaceous lycopsid. Stems branch dichotomously. Leaf bases circular or slightly elliptical. Persistent leaves four forked and arranged in low helices or alternating pseudowhorls. Stem having a solid strand of primary xylem. Primary xylem exarch. Metaxylem tracheids mainly scalariform elements; connecting threads (Williamson’s striations) present between scalariform bars. Protoxylem tracheids appear as minute ridges on stele surface in transverse section. Primary phloem in a narrow band surrounding the stele. Cortex relatively thick and possibly two zoned. Leaf traces mesarch; they originate directly from protoxylem points and traverse the cortex at a stable oblique angle. Fertile morphology unknown.
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