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Palmoxylon trachycarpoides
Palmoxylon trachycarpoides S. Iamandei, E. Iamandei in D. Velitzelos, S. Iamandei, E. Iamandei, E. Velitzelos Acta Palaeobot., 59(2): 319, 324. 2019
- Name
- Palmoxylon trachycarpoides
- Rank
- Species
- Generic Name
- [Genus] Palmoxylon
- Authors (Name)
- Iamandei S.
Iamandei E.
- Authors (Pub.)
- Velitzelos D.
Iamandei S.
Iamandei E.
Velitzelos E.
- Publication
- Palaeoxylotomical studies in the Cenozoic petrified forests of Greece. Part one – Palms [2019]
- Journal
- Acta Palaeobotanica
- Volume
- 59
- Issue
- 2
- Page number
- 319, 324
- Year
- 2019
- Fossil Status
- stems (wood)
- Stratigraphy
- Burdigalian
- Location
- Lesvos Island, Greece
- Paleoregion
- Eurasia (Europe)
Data for Holotypus
- Repository
- Athens University, Athens, Greece
- Repository Number
- specimen L512
Data for Paratypus
- Repository
- Athens University, Athens, Greece
- Repository Number
- specimen L529
- Diagnosis
- Central zone of central cylinder
built of uniform-sized, sometimes irregularly
arranged fibrovascular bundles with large
sclerenchyma caps of Reniformia type (sensu
Stenzel 1904), r/tg.d. 320–1550/400–900 μm, f/v
ratio 0.6–1.1 – 4.5, bundle density 46–177/cm2,
usually 70–75/cm2. Phloem appears as divided
phloem in two distinct islands. Xylematic zone
presents 2–6(8) round to elliptic, thick-walled,
different-sized metaxylem vessels 50–200 μm
in diameter, in longitudinal view showing helical
thickenings, scalariform pitting and high
scalariform perforations with up to 21 thin
branched bars. Protoxylem has up to 7 small
vessels 25–60(75) μm in diameter, in longitudinal
view showing annular thickenings.
Intravascular parenchyma cells polygonal or
rounded. Intervascular parenchyma of lacunar
type, with enlarged mucilaginous parenchyma
cells, of tabular type around sclerenchyma cap,
of radial type around vascular zone of fibrovascular
bundles. Fibrous bundles varying in
size of 15–20 fibers (in cross section); in longitudinal
view showing long rows of spherical
stegmata, slightly rugose.
