Erickson, R.E. & Willis, J.H. (1956), New species and varieties of Stylidium from Western Australia. Muelleria 1(1): 9-10 [tax. nov.]

• Type: "WESTERN AUSTRALIA – Approximately half mile south of 120 mile post, Albany Highway, south of Williams (HOLOTYPE in MEL, ISOTYPES in K and PERTH – Rica Erickson, 30 October 1952)."

common name: Apron Trigger-plant [n/a]

• Etymology: Epithet in allusion to the red calyx.

Carlquist, S. (1969), Studies in Stylidiaceae: new taxa, field observations, evolutionary tendencies. Aliso 7: 28 [basionym]

basionym of: Stylidium obtusatum var. rubricalyx (F.L.Erickson & J.H.Willis) Carlquist legitimate

Western Australian Herbarium (2011), FloraBase: the Western Australian Flora Version 2.6: - APC [secondary reference]

nomenclatural synonym: Stylidium obtusatum var. rubricalyx (F.L.Erickson & J.H.Willis) Carlquist legitimate

• APC Dist.: WA

Wege, J.A. (30 April 2012), Navigating the floral Milky Way: the taxonomy of the microgeophytic triggerplants (Stylidium petiolare and allies: Stylidiaceae). Australian Systematic Botany 25(2): 161-162, Figs 1B, 2Y, 14 (map) [secondary reference]

nomenclatural synonym: Stylidium obtusatum var. rubricalyx (F.L.Erickson & J.H.Willis) Carlquist legitimate common name: Apron triggerplant [n/a]

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