Wood structure of Tambourissa Hildebrandtii Perk, and some other Tambourissa species (Monimiaceae) is described. Comparative anatomical observations are also made on several other Monimiaceae (Hutchinson 1964, 1973) species. On wood anatomical grounds the investigated Tambourissa species fit quite well within the subfamily Monimioideae (Money et al. 1950; Hutchinson 1964; Takhtajan 1980) if the genera Amborella and Peumus are excluded.