This name is a synonym of Pedicularis longiflora var. tubiformis (Klotzsch) Tsoong.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 29207627) with original publication details: Bot. Ergebn. Reise Waldemar 106 1862.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:807768-1.
This name was in version 1 of The Plant List, record tro-29207627, and has not been changed.