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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.
492.6512 Genus Sommera Schltdl.; Linnaea 9: 602 (1835)
Distribution: Tropical America
Species listed in database: 11
species :
Sommera arborescens Schltdl.; Linnaea 9: 602 (1834)
Distribution: Mexico (Chiapas, Colima, Oaxaca, Puebla, Veracruz); Guatemala
79 MEX 80 GUA
Synonyms: hidden
= Sommera zygocalyx L.O.Williams; Phytologia 26: 126 (1973)
species :
Sommera chiapensis Brandegee; Univ. Calif. Publ. Bot. 6: 196 (1915)
Distribution: Mexico (Chiapas, Puebla, Veracruz); Guatemala; Honduras
79 MEX 80 GUA HON
species :
Sommera cusucoana Lorence, D.L.Kelly & Dietzsch; PhytoKeys 57: 2 (2015)
Distribution: Honduras
80 HON
species :
Sommera donnell-smithii Standl.; Contr. U.S. Natl. Herb. 17: 436 (1914)
Distribution: Nicaragua; Costa Rica; Panama; Colombia (Antioquia, Risaralda)
80 COS NIC PAN 82 CLM
Synonyms: hidden
= Sommera dunlapii L.O.Williams; Phytologia 26: 122 (1973)
= Sommera mesochroa Standl.; Contr. U.S. Natl. Herb. 17: 439 (1914)
= Sommera rivularis L.O.Williams; Phytologia 26, 125 (1973)
species :
Sommera fusca Oerst. ex Standl.; J. Wash. Acad. Sci. 17: 339 (1927)
Distribution: Mexico (Oaxaca)
79 MEX
species :
Sommera grandis (DC.) Standl.; N. Amer. Fl. [Britton et al., eds.] 32(2): 145 (1921)
Distribution: Mexico (Chiapas, Colima, Durango, Guerrero, Jalisco, Michoacán, Nayarit, Oaxaca, Sinaloa, Veracruz); Honduras; Panama
79 MEX 80 HON PAN
Synonyms: hidden
= Petesia grandis Bartl. ex DC.; Prodr. [A.P. de Candolle] 4: 395 (1830)
= Petesia minor Griseb.; Bonplandia (Hannover) 6: 8 (1858)
= Sommera subcordata Standl.; N. Amer. Fl. [Britton et al., eds.] 32(2): 144 (1921)
species :
Sommera guatemalensis Standl.; Contr. U.S. Natl. Herb. 17: 436 (1914)
Distribution: Mexico (Chiapas, Oaxaca, Veracruz); Guatemala
79 MEX 80 GUA
species :
Sommera montana L.O.Williams; Phytologia 26: 124 (1973)
Distribution: Honduras
80 HON
species :
Sommera parva Lorence; Novon 4(2): 134 (1994)
Distribution: Mexico (Chiapas)
79 MEX
species :
Sommera purdiei Standl.; Publ. Field Mus. Nat. Hist., Bot. Ser. 7: 48 (1930)
Distribution: Colombia (Bolívar, Boyacá, Cundinamarca); Ecuador
82 CLM 83 ECU
species :
Sommera sabiceoides K.Schum.; Fl. Bras. [Martius] 6(6): 300 (1889)
Distribution: Colombia (Amazonas, Risaralda); Ecuador; Peru; N-Brazil (Amazonas, Acre)
82 CLM 83 ECU PER 84 BRA
Synonyms: hidden
= Sommera lanceolata K.Krause; Verh. Bot. Vereins Prov. Brandenburg 50: 100 (1909)
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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