Gray, A. in Torrey, J. (1857), Scrophulariaceae, in Explorations and surveys for a railroad route from the Mississippi River to the Pacific Ocean. War Department. Route near the thirty-fifth parallel, explored by Lieutenant A.W. Whipple, topographical engineer, in 1853 and 1854. Report on the Botany of the Expedition: Descriptions of the general botanical collections. Pacific Railroad Report 4(5, 4): 121 [tax. nov.]

Chuang, T.I. & Heckard, L.R. (1991), Generic realignment and synopsis of subtribe Castillejinae (Scrophulariaceae - Tribe Pediculareae). Systematic Botany 16(4): 656 [basionym]

basionym of: Castilleja attenuata (A.Gray) T.I.Chuang & Heckard legitimate

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Castilleja attenuata (A.Gray) T.I.Chuang & Heckard legitimate

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