Gensu: 1 species.
Region: Hunduras, Matarras.
Ecology: very few individuals have ever been found; threatened by logging.
BotanyShrub or small tree.
Leaves: opposite; ± 6 cm apart; arranged in two ranks (distichous); simple; no stipules; petiole is short, ± 8 mm long; 10 to 14 cm long, ± 5 cm wide; hairless (glabrous).
Inflorescence: central carpellate flower and lateral staminate flowers; in leaf axils.
Flowers: unisexual very simple, lacking obvious sepals or petals; small bracts below the flower; staminate flower two anthers, closely pressed together, ± 4 mm long.
TaxonomyHaptanthus has been placed in its own family Hpatanthaceae. Phylogenetic research showed that Haptanthus belongs to the family
Buxaceae. The Apg4 system of 2016 includes Haptanthus in the family
Buxaceae.