⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-312153, with some changes.

Trillium apetalon f. atropurpureocarpum Makino is a synonym of Trillium smallii Maxim.

This name is a synonym of Trillium smallii Maxim..

The record derives from WCSP which reports it as a synonym (record 312153) with original publication details: J. Jap. Bot. 5: 28 1928.