⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record gcc-56276, with some changes.

Cirsium japonicum subsp. nikkoense (Nakai ex Matsum. & Koidz.) Nakai is a synonym of Cirsium oligophyllum var. nikkoense Kitam.

This name is a synonym of Cirsium oligophyllum var. nikkoense Kitam..

The record derives from TICA which reports it as a synonym (record B84B1656-D996-4405-B121-7D26140D8639) with original publication details: 61 1911.