Mueller, F.J.H. von (May 1883), Notes on angiantheous plants. The Australasian Chemist and Druggist 6(61): 4 [tax. nov.]

• Type: "In the vicinity of the Finke-River; Rev. H. Kempe."

• Etymology: "... is dedicated to Herr Joseph Armin Knapp, the meritorious Custodian of the Museum of the great Apothecaries' Society of Austria."

Mueller, F.J.H. von (1886), Systematic Census of Australian Plants Suppl. 3: 5 [secondary reference]

Mueller, F.J.H. von (13 May 1889), Systematic Census of Australian Plants Suppl. 4: 7 [secondary reference]

Ewart, A.J. & White, J. (1910), Contributions to the flora of Australia, No. 13. Proceedings of the Royal Society of Victoria Ser. 2, 22(2): 319 [basionym]

basionym of: Calocephalus knappii (F.Muell.) Ewart & Jean White legitimate

Short, P.S. in Jessop, J.P. (ed.) (1981), Compositae (Craspedia to Actinobole). Flora of Central Australia: 392 [nomenclatural synonym]

nomenclatural synonym of: Calocephalus knappii (F.Muell.) Ewart & Jean White legitimate

Anderberg, A.A. (1991), Taxonomy and Phylogeny of the Tribe Gnaphalieae (Asteraceae). Opera Botanica 104: 131 [nomenclatural synonym]

nomenclatural synonym of: Calocephalus knappii (F.Muell.) Ewart & Jean White legitimate

Short, P.S. (15 December 2016), Notes concerning the classification of species included in Calocephalus R.Br. s.lat. and Gnephosis Cass. s.lat. (Asteraceae: Gnaphalieae), with descriptions of new genera and species. Journal of the Adelaide Botanic Gardens 29: 179 [secondary reference]

• Lectotype: "“In the vicinity of the Finke River; Rev. H. Kempe.” Lectotype (here designated): Finke River, 1882, F.A.H. Kempe 503 (MEL 543276 & MEL 543277, ...). Isolectotype: NSW 139002. Remaining syntypes, isosyntypes & possible isolectotypes: Finke River, Dec. 1879, F.A.H. Kempe (MEL 543280, NSW 139001); Finke River, 1880, F.A.H. Kempe (MEL 543279); Finke River, 1882, F.A.H. Kempe (MEL 543278); Finke River, 1882, F.A.H. Kempe 516 (MEL 543281); Finke River, F.A.H. Kempe (K 000901837, but perhaps collected July 1883); Finke River, Central Aust., F.A.H. Kempe (K 000901838, received at K 4/1888); Finke River, F.A.H. Kempe (AD 97632031, ex herb. J.M.Black, fragments only, presumably obtained from MEL)."

Short, P.S. (15 December 2016), Notes concerning the classification of species included in Calocephalus R.Br. s.lat. and Gnephosis Cass. s.lat. (Asteraceae: Gnaphalieae), with descriptions of new genera and species. Journal of the Adelaide Botanic Gardens 29: 179 [nomenclatural synonym]

nomenclatural synonym of: Calocephalus knappii (F.Muell.) Ewart & Jean White legitimate

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