⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Roscyna americana in version 1.1 of The Plant List.
This name is a synonym of Hypericum ascyron var. americanum .
The record derives from Tropicos which reports it as a synonym (record 50337930
) with original publication details: Ann. Sci. Nat., Bot., sér. 2, 5(6): 364 364 1836.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:322202-2
.