⚠ Version 1 of The Plant List has been superseded.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 Porotrichum variabile in version 1.1 of The Plant List.
This name is a synonym of Porotrichum mutabile .
The record derives from Tropicos which reports it as a synonym (record 35142364
) with original publication details: Ann. Sci. Nat., Bot., sér. 5 4: 375 375 1865.