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Wataria
Genus Wataria K. Terada, Mits. Suzuki Rev. Palaeobot. Palynol., 103(3-4): 238. Oct 1998
- Name
- Wataria
- Rank
- Genus
- Authors (Pub.)
- Terada K.
Suzuki M.
- Publication
- Revision of the so-called ‘Reevesia’ fossil woods from the Tertiary in Japan — a proposal of the new genus Wataria (Sterculiaceae) [1998/10]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 103
- Issue
- 3-4
- Page number
- 238
- Year
- 1998
- Parent Taxon
- [Family] Sterculiaceae
- Fossil Status
- stems (wood)
- Type
- Wataria miocenica
- Diagnosis
- Wood distinctly ring porous
with wide vessels at beginning of growth rings in
cross section. Growth rings distinct. Wide vessels in
earlywood mostly solitary, round. Narrow vessels in
latewood solitary, and in groups of 2–5 with vasicentric
parenchyma; very thick-walled. Vessel elements
short; perforation plates exclusively simple; intertracheary
pitting alternate; helical thickenings absent;
thin-walled tyloses often present in wide vessels;
gum-like deposits rarely present in narrow vessels.
Axial parenchyma abundant, apotracheal and paratracheal;
apotracheal in uni- or biseriate tangential
bands alternating with 1–3 rows of fibers in latewood;
paratracheal abundant, vasicentric forming 1–
3-seriate sheath; conspicuously storied; fusiform and
in strands of 2–10 cells or more; crystals absent.
Rays heterocellular; uni- or multiseriate. Multiseriate
rays 2–10-seriate, composed of tile cells and
procumbent cells. Tile cells Pterospermum type or
intermediate to the Durio type; brown-colored substances
rarely observed in the tile cells; crystals
rarely present.
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