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Icacinoxylon kokubunii
Icacinoxylon kokubunii K. Takah., Mits. Suzuki I.A.W.A. J., 24(3): 281. 2003
- Name
- Icacinoxylon kokubunii
- Rank
- Species
- Generic Name
- [Genus] Icacinoxylon
- 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
- 281
- Year
- 2003
- Fossil Status
- stems (wood)
- Stratigraphy
- Turonian
- Strat. comment
- Member MI-Mo, Middle part of the Yezo Group
- Location
- 66-rinpan-sawa, Obira-cho, Rumoi County, Hokkaido, Japan
- Paleoregion
- Eurasia (Japanese Archipelago)
Data for Holotypus
- Repository
- Botanical Garden, Tohoku University, Sendai, Japan
- Repository Number
- KK 94291
- Diagnosis
- Growth rings absent. Wood diffuse-porous. Vessels very few, 4-9 (mean 6) per square mrn; mostly solitary (92%) and rarely in radial pairs; round, somewhat angular in cross section; 70-130 (mean 93) x 70-145 (mean 112) um in tangential x radial diameter; 580-1040 (mean 821) um in vessel element length; perforation plates exclusively scalariform with 5-35 bars; intervessel pits opposite to scalariform, elliptical, horizontally elongated, 6 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 abundant, diffuse-in-aggregates, no crystalliferous elements observed. Rays uniseriate and multiseriate; uniseriate rays abundant (44%) and low; multiseriate rays large, up to 35 cells (630 um) wide and 14.4 mm high; multiseriate rays markedly heterocellular with 1-6 marginal uniseriate rows; uniseriate rays and uniseriate marginal rows of multiseriate rays composed of upright cells, 40 x 65 um in radial length x height; body of multiseriate rays composed of procumbent cells, 90 x 25 um
in radial length x height; no crystalliferous elements observed.
