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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Gentianales

Familia: Rubiaceae
Subfamilia: Rubioideae
Tribus: Spermacoceae
Genus: Opercularia
Species: O. acolytantha – O. apiciflora – O. aspera – O. diphylla – O. echinocephala – O. hirsuta – O. hispida – O. hispidula – O. loganioides – O. ovata – O. scabrida – O. spermacocea – O. turpis – O. vaginata – O. varia – O. volubilis

Opercularia Gaertn., Fruct. Sem. Pl. 1: 112. (1788)

Type species: Non designatus.


Rubioides Sol. ex Gaertn., Fruct. Sem. Pl. 1: 112. (1788)
Cryptospermum Young, Trans. Linn. Soc. London 3: 30. (1797)
Eleuthranthes F.Muell. ex Benth. Fragm. (Mueller) 4(27): 92. (1864)
Eleutheranthes T.Post & Kuntze orth. var.
Choristanthus K.Schum. Nat. Pflanzenfam. [Engler & Prantl] iv. IV. 130. (1891) nom. inval., nom. prov.


Gaertner, J. 1788. De Fructibus et Seminibus Plantarum 1: 111.
Govaerts, R. et al. 2019. Opercularia in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2019 May 5. Reference page.
International Plant Names Index. 2019. Opercularia. Published online. Accessed: May 5 2019. 2019. Opercularia. Missouri Botanical Garden. Published on the internet. Accessed: 2019 May 5.

Opercularia is a genus of perennial and subshrub flowering plants in the family Rubiaceae. There are about 15 species, all of which are endemic to Australia.[1] Many of the species have an unpleasant odour.[1]

Species include:[2]

Opercularia acolytantha Diels
Opercularia apiciflora Juss.
Opercularia aspera Gaertn. – coarse stinkweed[1]
Opercularia diphylla Gaertn.
Opercularia echinocephala Benth. – bristly-headed stinkweed[3]
Opercularia hirsuta Benth. – silky-haired stinkweed[3]
Opercularia hispidula Endl. – hairy stinkweed, hispid stinkweed[3]
Opercularia liberiflora F.Muell.
Opercularia ovata Hook.f.
Opercularia rubioides Juss.
Opercularia scabrida Schltdl.
Opercularia spermacocea Juss.
Opercularia vaginata Juss. – dog weed[3]
Opercularia varia Hook.f. – variable stinkweed[1]
Opercularia volubilis Benth. – twining stinkweed[3]


"Genus Opercularia". PlantNET – New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 2009-07-26.
"Opercularia". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2009-09-26.
"Opercularia". FloraBase. Western Australian Government Department of Parks and Wildlife.

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