This name is a synonym of Hesperalcea malachroides (Hook. & Arn.) Greene.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50325541) with original publication details: Bot. Beechey Voy. 326 1841.
This name was in version 1 of The Plant List, record tro-50325541.