⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-13056641, with some changes.

Astragalus americanus f. williamsii J. Rousseau is a synonym of Astragalus americanus (Hook.) M.E.Jones

This name is a synonym of Astragalus americanus (Hook.) M.E.Jones.

The record derives from Tropicos which reports it as a synonym (record 13056641) with original publication details: Contr. Lab. Bot. Univ. Montréal 24: 51 51 1933.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:24439-2.