Akanioxylon

Name

Akanioxylon

Rank

Genus

Authors (Pub.)

Brea M. Zucol A. F. Bargo M. S. Fernicola J. C. Vizcaíno S. F.  

Publication

First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical implications [2017/3]

Journal

Botanical Journal of the Linnean Society

Volume

183

Issue

3

Page number

337

Year

2017

Parent Taxon

[Family] Akaniaceae

Fossil Status

stems (wood)

Type

Akanioxylon santacrucense

Diagnosis

Diffuse porous wood; vessels mainly solitary, occasionally in radial and tangential series of two or three elements and clusters; tangential diameter vessels 50–100 μm, numerous (≥ 100 per mm2); perforation plates are mainly simple, occasionally reticulate and rarely scalariform with many aberrant interconnections between bars; intervessel pits bordered, alternate or opposite, minute to small; axial parenchyma scanty paratracheal and apotracheal diffuse; vesselray parenchyma pits with much reduced borders to apparently simple; vessel-axial parenchyma pits scalariform; rays heterocellular, mainly multiseriate (four to six cells wide) and rarely uni- or biseriate; rays numerous (4–12 per linear mm); sheath cells present; occasionally crystals in ray cells; fibres septate and non-septate, with simple to minutely bordered pits; not storied structure.