Echeveria rauschii is not a synonym of E. whitei
Echeveria corallina is not a synonym of E. sessiliflora
Echeveria sessiliflora is a synonym of E. pinetorum
The former Echeveria albicans has been wrongly identified.
The former Echeveria elegans var. kesselringiana is the correct name for what has been called Echeveria albicans in the past.
Echeveria 'Silent Moon'
Echeveria goldiana is not a variety of E. halbingeri
Echeveria sanchez-mejoradae is totally misidentified and is not a variety of Echeveria halbingeri
Echeveria tamaulipana is nothing else than Echeveria walpoleana, a superfluous name.
Ongoing revision of genus Echeveria