⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-35137495, with some changes.
This name is a synonym of Isopterygium yokoskae var. boninense .
The record derives from Tropicos which reports it as a synonym (record 35137495
) with original publication details: Bot. Mag. (Tokyo) 54: 171. 6 171 1940.