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Plataninium ogasawarae
Plataninium ogasawarae K. Takah., Mits. Suzuki I.A.W.A. J., 24(3): 293. 2003
- Name
- Plataninium ogasawarae
- Rank
- Species
- Generic Name
- [Genus] Plataninium
- Authors (Pub.)
- Takahashi K.
Suzuki M.
- Publication
- Dicotyledonous fossil wood flora and early evolution of wood characters in the Cretaceous of Hokkaido, Japan [2003]
- Journal
- IAWA Journal
- Volume
- 24
- Issue
- 3
- Page number
- 293
- Year
- 2003
- Fossil Status
- stems (wood)
- Stratigraphy
- Coniacian
- Strat. comment
- Unknown, "probably Coniacian to Santonian"
- Location
- Obirashibe River, Obira-cho, Rumoi County, Hokkaido, Japan
- Paleoregion
- Eurasia (Japanese Archipelago)
Data for Holotypus
- Repository
- Botanical Garden, Tohoku University, Sendai, Japan
- Repository Number
- OG 96111
- Diagnosis
- Growth rings indistinct, delineated by differences in vessel diameter between earlywood and latewood, and layers of radially flattened fiber-tracheids in late wood. Wood diffuse-porous. Vessels numerous, 52-64 (mean 59) per square mm; solitary (65%) and in radial or tangential pairs, rarely in radial multiples of 3; round, somewhat angular in cross section; 45-85 (mean 63) x 50-90 (mean 65.5) pm in tangential x radial diameter; 330-1020 (mean 720.3) pm in vessel element length; perforation plates exclusively scalariforrn with 6-37 bars; intervessel pits opposite, elliptical, horizontally elongated, 15 x 3 pm in radial x vertical diameter; vessel-ray pits similar to intervessel pits. Imperforate tracheary elements fiber-tracheids with distinctly bordered pits. Axial parenchyma moderately abundant, diffuse, no crystalliferous elements observed. Rays rarely uniseriate (7%) and mostly multiseriate; uniseriate rays low; multiseriate rays large, up to 27 cells (505 um) wide and 10 mm high; homocellular composed of all procumbent cells, 100 x 30 pm in radial length x height ; no crystals observed.
