⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35206252, with some changes.

Thamnium hildebrandtii f. confertum Besch. is a synonym of Porothamnium comorense (Hampe ex Müll. Hal.) Sim

This name is a synonym of Porothamnium comorense (Hampe ex Müll. Hal.) Sim.

The record derives from Tropicos which reports it as a synonym (record 35206252) with original publication details: J. Jap. Bot. .