⚠ Version 1 of The Plant List has been superseded.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 Pyrus sitchensis in version 1.1 of The Plant List.
This name is a synonym of Sorbus sitchensis subsp. californica .
The record derives from Tropicos which reports it as a synonym (record 50306206
) with original publication details: Univ. Calif. Publ. Bot. 9: 233 233 1921.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:215217-2
.