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Icacinoxylon nishidae
Icacinoxylon nishidae K. Takah., Mits. Suzuki I.A.W.A. J., 24(3): 283. 2003
- Name
- Icacinoxylon nishidae
- 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
- 283
- 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
- NS 96011
- Diagnosis
- Growth rings absent. Wood diffuse-porous. Vessels moderately few, 16-28 (mean 21) per square mm; predominantly solitary (60%) and in radial multiples of 2, rarely of 3; round, somewhat angular in cross section; 65-130 (mean 92) x 75-135 (mean 99) pm in tangential x radial diameter; 550-1150
(mean 850) un in vessel element length; perforation plates exclusively scalariform with 7-26 bars; intervessel pits opposite, elliptical, horizontally elongated, 8 x 3 um 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, no crystalliferous elements observed. Rays uniseriate and multiseriate; uniseriate rays abundant (33%) and low; multiseriate rays moderately large, up to 17 cells (445 um) wide and 5.8 mm high; multiseriate rays markedly heterocellular with 1-4 marginal uniseriate rows; uniseriate rays and uniseriate marginal rows of multiseriate ones composed of upright cells, 40 x 60 um in radial length x height ; multiseriate cores composed of procumbent cells, 95 x 30 um in radial length x height; no crystalliferous elements observed.
