Klaassenoxylon, KLAASSENII

Wheeler, Elisabeth A., Manchester, Steven R. & Baas, Pieter, 2023, A late Eocene wood assemblage from the Crooked River Basin, Oregon, USA, PaleoBios 40 (14), pp. 1-55 : 38

KLAASSENOXYLON KLAASSENII ( WHEELER AND MANCHES- TER) COMB. NOV.

Basionym— Sapindoxylon klaassenii Wheeler et Manchester (2002, p. 132 )

The complex pith of UF 278-84882 resembles the piths described by Poole and Wilkinson (1992) for extant Allectryon and Guioa and the fossil Sapindoxylon guioaoides Poole and Wilkinson (1992). The wood of Guioa also resembles this fossil ( Klaassen 1999). Pith anatomy remains an underexplored field, which is unfortunate because in the Sapindaceae pith features are highly diagnostic ( Wilkinson 1988, Poole and Wilkinson 1992).