⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-35118870, with some changes.
This name is a synonym of Isopterygium planifrons .
The record derives from Tropicos which reports it as a synonym (record 35118870
) with original publication details: Beih. Bot. Centralbl., Abt. 2 19(2): 146 146 1905.