Steetz, J. in Lehmann, J.G.C. (ed.) (1845), Compositae. Plantae Preissianae 1(3): 485 [tax. nov.]

• Type: "In arenosis insulae Rottennest, d. 20. aug. 1839 . Herb. Preiss. No. 109 et No. 108 (ex parte). Swan-River. Hügel! Ferd. Bauer! (V.s. in herb. aulico Vindobonn.!)."

• Comment: Published as `β angustissima'.

Belcher, R.O. (12 April 1994), The 'Senecio aff. lautus' complex (Asteraceae) in Australia. II. Clarification of names given to pseudolautusoid Australian specimens of Senecio by Richard and by Candolle. Australian Systematic Botany 7(1): 77 [secondary reference]

• Lectotype: Syntypi: Western Australia, 'in arenosis insulae Rottennest' [sic!], 20.vii.1839, Preiss 109, lecto. (here chosen) MEL 7131173 ex Herb. Steetz; and Preiss 'No. 108 (ex parte)' excluding specimens (n.v.) of Picris squarrosa J. Steetz, designated as No. 108 in error]: W!, P! ex Sch.-Bip.!)

Belcher, R.O. (12 April 1994), The 'Senecio aff. lautus' complex (Asteraceae) in Australia. II. Clarification of names given to pseudolautusoid Australian specimens of Senecio by Richard and by Candolle. Australian Systematic Botany 7(1): 77 [taxonomic synonym]

taxonomic synonym of: Senecio pinnatifolius A.Rich. legitimate

Thompson, I.R. (24 June 2005), Taxonomic studies of Australian Senecio (Asteraceae) 5. The S. pinnatifolius/S. lautus complex. Muelleria 21: 45 [taxonomic synonym]

taxonomic synonym of: Senecio pinnatifolius var. latilobus (Steetz) I.Thomps. legitimate

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

orthographic variant: Senecio carnulentus β angustissima orth. var.

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

taxonomic synonym of: Senecio pinnatifolius var. latilobus (Steetz) I.Thomps. legitimate

Thompson, I.R. in Wilson, A.J.G. (ed.) (2015), Senecio. Flora of Australia 37: 291 [taxonomic synonym]

taxonomic synonym of: Senecio pinnatifolius var. latilobus (Steetz) I.Thomps. legitimate

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