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Hubeiia dicrofolia
Hubeiia dicrofolia J.-Z. Xue, S.-G. Hao, De-M. Wang, Z.-F. Liu Int. J. Pl. Sci., 166(3): 520. May 2005
- Name
- Hubeiia dicrofolia
- Rank
- Species
- Original spelling
- dicrofollia
- Generic Name
- [Genus] Hubeiia
- 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
- Stratigraphy
- Famennian
- Strat. comment
- Xiejingsi Formation
- Location
- South side of Luoyan Hill, ca. 20 km southwest of Changyang County, Hubei Province, China
- Paleoregion
- Cathaysia (South)
Data for Holotypus
- Repository
- Beijing University, Department of Geology, Beijing, China
- Repository Number
- PKU-X-11a
- Diagnosis
- Leaf bases arranged in low helices or alternating pseudowhorls, 12–14 per gyre. Leaves show four-forked appearance, and at a distance of about two-thirds from the base two successive dichotomies occur. Four segments, equal or unequal in length, probably on two intersecting planes, two segments per plane. Solid primary xylem strands occupy the center of axes, with an estimated 20–24 protoxylem ridges on the stele surface. Protoxylem tracheids composed of annular elements. Primary phloem band four to eight cells wide. Phloem cells thin walled, rectangular, and elongate tangentially in transverse section and elongate along the axis of the stem. Leaf trace consists of more than 10 circular or ovate cells in transverse view. Epidermal cells, tapering or truncated at ends, arranged in one of two patterns: radially surrounding leaf bases or longitudinally elongate.
