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Metcalfeoxylon
Genus Metcalfeoxylon E.A. Wheeler, McClamm., LaPasha I.A.W.A. J., 16(3): 232. Jan 1995
- Name
- Metcalfeoxylon
- Rank
- Genus
- Authors (Pub.)
- Wheeler E. A.
McClammer J. U.
LaPasha C. A.
- Publication
- Similarities and differences in dicotyledonous woods of the Cretaceous and Paleocene of San Juan Basin, New Mexico, USA [1995/1]
- Journal
- IAWA Journal
- Volume
- 16
- Issue
- 3
- Page number
- 232
- Year
- 1995
- Parent Taxon
- [Class] Magnoliopsida
- Fossil Status
- stems (wood)
- Type
- Metcalfeoxylon kirtlandense
- Diagnosis
- Wood diffuse-porous. Vessels exclusively solitary, mean tangential diameter of vessels 50-200 um; fewer than 20 per sq.mm; perforations exclusively scalariform with fewer than 25 bars; intervessel pits opposite; vessel-ray parenchyma pits similar to intervessel pits. Rays 2-6 cells wide; heterocellular and frequently with more than 10 marginal rows of upright cells at at least one margin, pronounced difference in height between procumbent and upright cells; uniseriate rays numerous and composed exclusively of upright cells. Axial parenchyma apotracheal diffuse. Fibers non-septate
with distinctly bordered pits, more common on radial walls.
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