Abstract
Abstract Wood anatomy of Toronia toru (A. Cunn.) L. Johnson & B. Briggs and Knightia excelsa R. Br. is described. Knightia is readily distinguished from Toronia by the festooned arrangement of vessels and axial parenchyma, fewer and wider vessels, markedly large rays, and absence from vessels of both helical thickenings and vestured pits. Growth-ring boundaries in Knightia are indicated by marked noding of wide rays. Fine helical thickenings are present in some fibre-tracheids of Toronia and Knightia. Fusiform parenchyma cells lacking storied structure are recorded in Toronia. Vestured pits are recorded in vessels and fibre-tracheids of several Australian species of Persoonia sensu stricto, and the segregate genera Acidonia and Pycnonia.
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