KLAASSENOXYLON GEN. NOV.

Diagnosis— Growth rings distinct to indistinct. Wood diffuse-porous. Vessels solitary and in short radial multiples. Perforation plates exclusively simple; intervessel pits alternate, minute to small; vessel-ray parenchyma pits similar to intervessel pits. Axial parenchyma rare, scanty paratracheal. Fibers with simple pits, septate and non-septate. Rays uniseriate (rarely biseriate), heterocellular. Crystals, if present, in chambered fibers

Etymology— For René Klaassen, whose monograph on the wood anatomy of the Sapindaceae was a major contribution to our understanding of this family.