⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-12917, with some changes.
Apocynum occidentale
is a synonym
of Apocynum androsaemifolium subsp. androsaemifolium
This name is a synonym of Apocynum androsaemifolium subsp. androsaemifolium .
The record derives from WCSP which reports it as a synonym (record 12917) with original publication details: Atti Reale Accad. Lincei 5(9): 80 1913.