⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-4103292, with some changes.

Psilonema calycinum (L.) C.A. Mey. is a synonym of Alyssum alyssoides (L.) L.

This name is a synonym of Alyssum alyssoides (L.) L..

The record derives from Tropicos which reports it as a synonym (record 4103292) with original publication details: Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 7: 132 132 1840.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:288237-1.