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Polypetalophyton wufengense
Polypetalophyton wufengense B.-Y. Geng in J. Hilton, B.-Y. Geng, Kenrick Int. J. Pl. Sci., 164(5): 795. Sep 2003
- Name
- Polypetalophyton wufengense
- Rank
- Species
- Original spelling
- wufengensis
- Generic Name
- [Genus] Polypetalophyton
- Authors (Name)
- Geng B.-Y.
- Authors (Pub.)
- Hilton J.
Geng B.-Y.
Kenrick P.
- Publication
- A novel Late Devonian (Frasnian) woody cladoxylopsid from China [2003/9]
- Journal
- International Journal of Plant Sciences
- Volume
- 164
- Issue
- 5
- Page number
- 795
- Year
- 2003
- Fossil Status
- stems (with branches)
- Stratigraphy
- Frasnian
- Location
- Lijiawan Village, Wufeng county, Hubei Province, China
- Paleoregion
- Cathaysia (South)
Data for Holotypus
- Repository
- Institute of Botany, Chinese Academy of Sciences, Beijing, China
- Repository Number
- CBP9796
- Diagnosis
- Plant with at least four orders of branching with successive branches produced in an irregular helix except for ultimate appendages, which are borne alternately to suboppositely in a single plane. Vegetative ultimate appendages of the Sphenopteridium-type, flattened, with up to nine dichotomies occurring in the same plane. Fertile appendages with isotomous divisions, bearing terminal fusiform sporangia singly. Sporangia small, from 0.5 to 1.1 mm long and from 0.2 to 0.7 mm wide, and with longitudinal dehiscence. Sporangial epidermal cells elongated, from 14 to 20 mm long and from 3 to 7 mm wide. Spores of one kind, circular, trilete, and from 41 to 55 mm in diameter, and laesurae from 6 to 9 mm long. Stele of several primary xylem strands. Central strand or strands circular in section; peripheral strands more numerous (up to 12), strap shaped, and aligned in a radial pattern. Peripheral primary xylem segments with protoxylem lacuna, metaxylem, and abundant radially aligned xylem with ray-like slits. Tracheids with both circular and scalariform bordered pits in uniseriate and biseriate arrangements
