The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record gcc-17394, and has not been changed.

M Helianthus rydbergii Britton is a synonym of Helianthus nuttallii subsp. rydbergii (Britton) R.W.Long

This name is a synonym of Helianthus nuttallii subsp. rydbergii (Britton) R.W.Long.

The record derives from TICA which reports it as a synonym (record 47CD5AC5-F270-4843-A0F8-20242B1585AB) with original publication details: 1901.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:212251-1.