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 29207628) with original publication details: Acad. Nat. Sci. Philadelphia Monogr. 5: 150 1943.
This name was in version 1 of The Plant List, record tro-29207628, and has not been changed.