Status: nom. inval. nom. nud.

(as angustifolium (incisum))

Sium angustifolium (incisum): it is uncertain what Persoon meant (whether he intended: Sium (incisum) as an alternative name to S. angustifolium; or rejected S. angustifolium as misapplied and replaced it with S. incisum) (IPNI)