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492.0000 Family Rubiaceae Juss.; Gen. Pl. [Jussieu] 196 (1789), nom. cons.
589 genera, ca. 14.200 spp. mostly tropics, comparably few temperate. Phylogeny: Razafimandimbison & Rydin (2024)
Species listed in database: 14370; hybrids: 47
= Aparinaceae Hoffmanns. & Link; Fl. Portug. [Hoffmannsegg] 2: 3, 38 (1813-1829)
= Asperulaceae Cham. ex Spenn.; Handb. Angew. Bot. 2: 493 (1835)
= Catesbaeaceae Martinov; Tekhno-Bot. Slovar 111 (1820)
= Cephalanthaceae Raf.; Ann. Gén. Sci. Phys. 6: 86 (1820)
= Cinchonaceae Batsch; Tab. Affin. Regni Veg. 234 (1802)
= Coffeaceae Batsch; Tab. Affin. Regni Veg. 233 (1802)
= Coutareaceae Martinov; Tekhno-Bot. Slovar 168 (1820)
= Dialypetalanthaceae Rizzini & Occhioni; Lilloa 17: 253 (1948), nom. cons.
= Galiaceae Lindl.; Intr. Nat. Syst. Bot., ed. 2: 249 (1836)
= Gardeniaceae Dumort.; Anal. Fam. Pl. 29, 32 (1829)
= Guettardaceae Batsch; Tab. Affin. Regni Veg. 235 (1802)
= Hameliaceae Mart.; Consp. Regn. Veg. [Martius] 31 (1835)
= Hedyotidaceae Dumort.; Commentat. Bot. [Dumortier] 57 (1822)
= Henriqueziaceae Bremek.; Acta Bot. Neerl. 6 (Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 141): 371 (1957)
= Houstoniaceae Raf.; Good Book 21 (1840)
= Hydrophylacaceae Martinov; Tekhno-Bot. Slovar 318 (1820)
= Lippayaceae Meisn.; Pl. Vasc. Gen. [Meisner], Tab. Diagn. 156, Comm. 112 (1838)
= Lygodisodeaceae Bartl.; Ord. Nat. Pl. 123, 207 (1830)
= Naucleaceae Wernham; New Phytol. 11: 225 (1912)
= Nonateliaceae Martinov; Tekhno-Bot. Slovar 420 (1820)
= Operculariaceae Juss. ex Perleb; Vers. Arzneikr. Pfl. 207 (1818)
= Pagamaeaceae Martinov; Tekhno-Bot. Slovar 447 (1820)
= Psychotriaceae F.Rudolphi; Syst. Orb. Veg. 49 (1830)
= Randiaceae Martinov; Tekhno-Bot. Slovar 534 (1820)
= Sabiceaceae Martinov; Tekhno-Bot. Slovar 555 (1820)
= Spermacoceaceae Bercht. & J.Presl; Přir. Rostlin 256 (1820)
= Theligonaceae Dumort.; Anal. Fam. Pl. 15, 17 (1829), nom. cons.
492.3106 Genus Opercularia Gaertn.; Fruct. Sem. Pl. 1: 112, t. 24 (1788)
Distribution: Australia
Species listed in database: 18
= Cryptospermum Young; Trans. Linn. Soc. London 3: 30 (1797)
= Rubioides Sol. ex Gaertn.; Fruct. Sem. Pl. 1: 112 (1788)
species :
Opercularia acolytantha Diels; Bot. Jahrb. Syst. 35: 547 (1905)
Distribution: Australia (S-Western Australia)
50 AUS
species :
Opercularia apiciflora Labill. ex Juss.; Ann. Mus. Natl. Hist. Nat. 4: 427 (1804)
Distribution: Australia (Western Australia)
50 AUS
Synonyms: hidden
= Opercularia apiciflora Labill.; Nov. Holl. Pl. 1: 35, t. 48 (1804)
species :
Opercularia aspera Gaertn.; Fruct. Sem. Pl. 1: 112, t. 24 (1788)
Distribution: Australia (Queensland, New South Wales, Victoria)
50 AUS
Synonyms: hidden
= Cryptospermum youngii Pers.; Syn. Pl. [Persoon] 1: 122 (1805)
= Opercularia aspera var. hyssopifolia (Juss.) Benth.; Fl. Austral. [Bentham] 3: 434 (1867)
= Opercularia aspera var. ligustrifolia (Juss.) Benth.; Fl. Austral. [Bentham] 3: 434 (1867)
= Opercularia hyssopifolia Juss.; Ann. Mus. Natl. Hist. Nat. 4: 428, t. 71 (1804)
= Opercularia ligustrifolia Juss.; Ann. Mus. Natl. Hist. Nat. 4: 428, t. 71 (1804)
= Opercularia ocimifolia Juss.; Ann. Mus. Natl. Hist. Nat. 4: 428, t. 71 (1804)
= Opercularia paleata Young; Trans. Linn. Soc. London 3: 30, t. 5 (1797)
= Rubioides aspera Sol. ex A.Cunn.; Ann. Nat. Hist., Ser. 1: 2: 205 (1839)
species :
Opercularia diphylla Gaertn.; Fruct. Sem. Pl. 1: 113 (1788)
Distribution: Australia (Queensland, New South Wales)
50 AUS
Synonyms: hidden
= Opercularia sessiliflora Juss.; Ann. Mus. Natl. Hist. Nat. 4: 427, t. 70 (1804)
= Rubioides diphylla Sol. ex A.Cunn.; Ann. Nat. Hist., Ser. 1: 2: 205 (1839)
species :
Opercularia echinocephala Benth.; Fl. Austral. [Bentham] 3: 436 (1867)
Distribution: Australia (Western Australia)
50 AUS
species :
Opercularia hirsuta F.Muell. ex Benth.; Fl. Austral. [Bentham] 3: 434 (1867)
Distribution: Australia (SE-Western Australia: near Esperance)
50 AUS
species :
Opercularia hispida Spreng.; Syst. Veg., ed. 16 [Sprengel] 1: 385 (1824)
Distribution: Australia (Queensland, New South Wales, Victoria)
50 AUS
Synonyms: hidden
= Opercularia hirtella DC.; Prodr. [A.P. de Candolle] 4: 616 (1830)
species :
Opercularia hispidula Endl.; Enum. Pl. [Endlicher] 58 (1837)
Distribution: Australia (Western Australia)
50 AUS
Synonyms: hidden
= Opercularia coprosmoides F.Muell.; Ned. Kruidk. Arch. 4: 108 (1856), pro syn.
= Opercularia hispidula var. pauciflora (Endl.) Benth.; Fl. Austral. [Bentham] 3: 436 (1867)
= Opercularia pauciflora Endl.; Enum. Pl. [Endlicher] 57 (1837)
= Opercularia purpurea Bartl.; Pl. Preiss. [J.G.C.Lehmann] 1: 369 (1845)
species :
Opercularia loganioides Keighery; Nuytsia 13(1): 29 (1999)
Distribution: Australia (Western Australia)
50 AUS
species :
Opercularia nubicola A.S.Markey; Nuytsia 29: 132 (2018)
Distribution: Australia (S-Western Australia)
50 AUS
species :
Opercularia ovata Hook.f.; London J. Bot. 6: 465 (1847)
Distribution: Australia (South Australia, Tasmania, Victoria)
50 AUS
Synonyms: hidden
= Opercularia micromerioides F.Muell. ex Miq.; Ned. Kruidk. Arch. 4: 108 (1856), pro syn.
species :
Opercularia rubioides Juss.; Ann. Mus. Natl. Hist. Nat. 4: 428 (1804)
Distribution: Australia (Western Australia)
50 AUS
species :
Opercularia scabrida Schltdl.; Linnaea 20: 604 (1847)
Distribution: Australia (South Australia, Victoria)
50 AUS
species :
Opercularia spermacocea Juss.; Ann. Mus. Natl. Hist. Nat. 4: 427 (1804)
Distribution: Australia (Western Australia)
50 AUS
species :
Opercularia turpis F.Muell.; Ned. Kruidk. Arch. 4: 109 (1859)
Distribution: Australia (South Australia, New South Wales, Victoria)
50 AUS
species :
Opercularia vaginata Juss.; Ann. Mus. Hist. Nat. 4: 428 (1804)
Distribution: Australia (Western Australia)
50 AUS
Synonyms: hidden
= Opercularia multicaulis Bartl.; Pl. Preiss. [J.G.C.Lehmann] 1: 369 (1845)
species :
Opercularia varia Hook.f.; London J. Bot. 6: 466 (1847)
Distribution: Australia (South Australia, New South Wales, Victoria, Tasmania)
50 AUS
Synonyms: hidden
= Opercularia brachyphylla F.Muell. ex Miq.; Ned. Kruidk. Arch. 4: 110 (1856), pro syn.
= Opercularia eclyptoides F.Muell. ex Miq.; Ned. Kruidk. Arch. 4: 110 (1856)
= Opercularia stuartiana F.Muell. ex Miq.; Ned. Kruidk. Arch. 4: 110 (1856), pro syn.
= Opercularia varia var. filiformis Hook.f.; Hooker´s J. Bot. Kew Gard. Misc. 6: 466 bis (1847)
= Opercularia varia var. hispidula Hook.f.; Hooker´s J. Bot. Kew Gard. Misc. 6: 466 (1847)
= Opercularia varia var. rigidior Benth.; Fl. Austral. [Bentham] 3: 435 (1867)
= Opercularia varia var. scabrida Hook.f.; Hooker´s J. Bot. Kew Gard. Misc. 6: 466 (1847)
species :
Opercularia volubilis R.Br. ex Benth.; Fl. Austral. [Bentham] 3: 435 (1867)
Distribution: Australia (Western Australia)
50 AUS
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A complete, synonymic checklist of the Higher Plants of the World

Version 26.08 (August 2nd, 2026)

Covering 360,349 accepted species,
8,927 hybrids, 47,544 accepted infraspecific taxa and 1,011,667 synonyms,
in total 1,428,487* names

[*about 20,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]

With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life