See http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:77110702-1

TJM2 and Calflora and the Oregon Flora Project all retain Menziesia, FPNW2 does not (though this is somewhat inconsistent with other generic circumscriptions in there). Other former Menziesia are already added as Rhododendron on iNat, so we should be consistent.