Liquidambaroxylon efeae Akkemik

Plant Fossil Names Registry Number: PFN002207


Author: Ü. Akkemik

Rank: species

Reference: Akkemik, Ü. (2021): A re-examination of the angiosperm wood record from the early and middle Miocene of Turkey, and new species descriptions. – Acta Palaeobotanica 61(1): 42–94.

Page of description: 44

Illustrations or figures: pl. 1


Holotype HOC37, Department of Forest Botany, Faculty of Forestry, Istanbul University-Cerrahpasa, Istanbul, Turkey
Figures: pl. 1

Note: Holotype: Three thin sections of specimen HOC37.

Original diagnosis/description

Growth ring boundaries mostly distinct. Wood diffuse-porous. Vessels exclusively solitary (90% or more), generally angular in outline. Mean vessel tangential diameter 50–100 mm, ~100 vessels per mm2 (Pl. 1A). Axial parenchyma apotracheal and diffuse. Rays of two distinct sizes: narrow uniseriate rays reaching to 0.4 mm high and larger rays commonly 4–6-seriate, some of the rays >1 mm high, 4–12 rays per mm (Pl. 1B, C). 3–4 axial parenchyma cells per strand. Fibre tracheids common. Rays heterocellular with procumbent body ray cells and 1–4 and or more rows of upright and/or square marginal cells (Pl. 1D, G). Intervessel pits opposite, alternate or commonly scalariform (Pl. 1E). Perforation plates scalariform with ~25–30 (20–40) bars (Pl. 1F, G).

PFNR Administrator note: mm2 to be read as square mm (our text box does not allow upper index).


The epithet “efeae” honours Prof. Dr. Asuman Efe, who was the head of the Forest Botany Department of Faculty of Forestry, Istanbul University-Cerrahpasa before her untimely death in an accident. She worked on the endemic species Liquidambar orientalis Mill. for her PhD thesis.


Neogene, Miocene
Hançili Formation, early Miocene


Hoçaş Fossil Site of Seben city in Bolu Province

Plant fossil remain

fossil wood


Use comments to notify PFNR administrators of mistakes or incomplete information relevant to this record.