⚠ Version 1 of The Plant List has been superseded.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 Salix longifolia in version 1.1 of The Plant List.
This name is a synonym of Salix exigua f. wheeleri .
The record derives from Tropicos which reports it as a synonym (record 50333188
) with original publication details: Bot. Gaz. 67(4): 342 342 1919.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:225970-2
.