This name is a synonym of Chamaecyparis obtusa var. formosana (Hayata) Hayata.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 385759) with original publication details: Taiwania 1: 305 1950.
This name was in version 1 of The Plant List, record kew-2871303.