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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.
492.2913 Genus Otomeria Benth.; Niger Fl. [W.J.Hooker] 405 (1849)
Distribution: Tropical Africa, Madagascar
Species listed in database: 8
= Tapinopentas Bremek.; Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2, 48(2) (Afr. Sp. Oldenlandia): 49 (1952)
species :
Otomeria cameronica (Bremek.) Hepper; Kew Bull. 14: 253 (1960)
Distribution: Sierra Leone; Ivory Coast; Ghana; Togo; Benin; Nigeria; Cameroon; Bioko Isl. [Fernando Poo]; Principe Isl.; Equatorial Guinea; Gabon; Congo [Brazzaville]
22 BEN GHA IVO NGA SIE TOG 23 BIO CMN CON EQG GAB PRI
Synonyms: hidden
= Tapinopentas cameronica Bremek.; Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2, 48(2) (Afr. Sp. Oldenlandia): 49 (1952)
= Tapinopentas latifolia Verdc.; Bull. Jard. Bot. État Bruxelles 23: 60 (1953)
species :
Otomeria elatior (A.Rich.) Verdc.; Bull. Jard. Bot. État Bruxelles 23: 18 (1953)
Distribution: Guinea-Bissau; Guinea; Sierra Leone; SW-Mali; Ivory Coast; Ghana; Nigeria; Cameroon; Gabon; Congo [Brazzaville]; Central African Republic; Cabinda; D. R. Congo [Zaire]; Burundi; South Sudan; Uganda; Kenya; Tanzania; Angola; Zambia; Zimbabwe; Mozambique
22 GHA GNB GUI IVO MLI NGA SIE 23 BUR CAB CAF CMN CON GAB ZAI 24 SSU 25 KEN TAN UGA 26 ANG MOZ ZAM ZIM
Synonyms: hidden
= Otomeria dilatata Hiern; Fl. Trop. Afr. [Oliver et al.] 3: 50 (1877)
= Otomeria elatior f. speciosa (Baker) Verdc.; Bull. Jard. Bot. État Bruxelles 23: 23 (1953)
= Otomeria speciosa (Baker) Scott Elliot; J. Linn. Soc., Bot. 32: 437 (1896)
= Pentas elatior (A.Rich.) Walp.; Repert. Bot. Syst. [Walpers] 6: 57 (1848)
= Pentas speciosa Baker; Bull. Misc. Inform. Kew 1895: 67 (1895)
= Sipanea elatior A.Rich.; Mém. Rubiac. 196 (1830)
species :
Otomeria guineensis Benth.; Niger Fl. [W.J.Hooker] 405 (1849)
Distribution: Liberia; Nigeria; Cameroon; Gabon; Congo [Brazzaville]; Central African Republic; D. R. Congo [Zaire]
22 LBR NGA 23 CAF CMN CON GAB ZAI
species :
Otomeria lanceolata Hiern; Fl. Trop. Afr. [Oliver et al.] 3: 50 (1877)
Distribution: ?Central African Republic; D. R. Congo [Zaire]; Angola
23 ZAI 26 ANG
Synonyms: hidden
= Otiophora angolensis R.D.Good; J. Bot. 64(Suppl. 2): 40 (1926)
= Otomeria angolensis (R.D.Good) Verdc.; J. Linn. Soc., Bot. 53: 383 (1950)
= Otomeria graciliflora K.Schum. ex De Wild.; Miss. Ém. Laurent 1: 274 (1906), nomen
= Otomeria leptocarpa S.Moore; J. Linn. Soc., Bot. 37: 299 (1906)
species :
Otomeria madiensis Oliv.; Trans. Linn. Soc. London 29: 83, t. 47 (1873)
Distribution: Central African Republic; D. R. Congo [Zaire]; South Sudan; Uganda
23 CAF ZAI 24 SSU 25 UGA
Synonyms: hidden
= Otomeria blommaertii De Wild.; Pl. Bequaert. 5: 429 (1932)
species :
Otomeria micrantha K.Schum.; Bot. Jahrb. Syst. 23: 423 (1896)
Distribution: Nigeria; Cameroon; Gabon; Congo [Brazzaville]; Central African Republic; D. R. Congo [Zaire]
22 NGA 23 CAF CMN CON GAB ZAI
species :
Otomeria oculata S.Moore; J. Bot. 18: 4 (1880)
Distribution: Ethiopia; Uganda; Kenya
24 ETH 25 KEN UGA
species :
Otomeria volubilis (K.Schum.) Verdc.; Kew Bull. [6]: 361 (1951 publ. 1952)
Distribution: Nigeria; Cameroon; Gabon; Congo [Brazzaville]; Central African Republic; D. R. Congo [Zaire]; Uganda
22 NGA 23 CAF CMN CON GAB ZAI 25 UGA
Synonyms: hidden
= Otomeria batesii Wernham; J. Bot. 54: 226 (1916)
= Pentas dewevrei De Wild. & T.Durand; Bull. Soc. Roy. Bot. Belgique 38: 198 (1899)
= Pentas volubilis K.Schum.; Bot. Jahrb. Syst. 23: 421 (1896)
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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