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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: Oldenlandia
Species: O. accedens – O. acicularis – O. adscensionis – O. aegialodes – O. aemulans – O. affinis – O. apoensis – O. arenarioides – O. aretioides – O. aridosa – O. attenuata – O. balfourii – O. banksii – O. bicornuta – O. boscii – O. brachypetala – O. brachyphylla – O. brachypoda – O. breviflora – O. butensis – O. cana – O. capensis – O. capillipes – O. capituligera – O. chevalieri – O. chiovendae – O. ciliata – O. ciliolata – O. clausa – O. comata – O. contracta – O. corymbosa – O. cryptocarpa – O. cyperoides – O. debilis – O. decipiens – O. delicata – O. densa – O. densiflora – O. dineshii – O. dinteri – O. drymarioides – O. duemmeri – O. dusenii – O. echinulosa – O. erecta – O. erythraeoides – O. fastigiata – O. filicaulis – O. filifolia – O. flosculosa – O. forcipitistipula – O. fraterna – O. friesiorum – O. galioides – O. geophila – O. gibsonii – O. grandis – O. gregaria – O. hedyotidea – O. herbacea – O. hockii – O. horneriana – O. hygrophila – O. hymenophylla – O. ichthyoderma – O. imberbis – O. incana – O. intonsa – O. johnstonii – O. justiciformis – O. kamputensis – O. kochii – O. korthalsiana – O. labialis – O. laceyi – O. lactea – O. lakshnakarae – O. lanceolata – O. lancifolia – O. largiflorens – O. laurentii – O. lechleriana – O. lecomtei – O. leptocaulis – O. leptoneura – O. linearifolia – O. loganioides – O. longifolia – O. machingensis – O. macrosepala – O. maestrensis – O. mairei – O. manyoniensis – O. marcanii – O. massiei – O. matthewii – O. microcalyx – O. microcarpa – O. microphylla – O. microtheca – O. mollis – O. monanthos – O. monocephala – O. mouretii – O. multiglomerulata – O. muscosa – O. nematocaulis – O. neomicrophylla – O. nervosa – O. nigrescens – O. nudiflora – O. ocellata – O. ovata – O. oxycoccoides – O. paludosa – O. parishii – O. parva – O. patula – O. peduncularis – O. pierrei – O. pilulifera – O. platystipula – O. polyclada – O. polyphylla – O. praecox – O. prainiana – O. pringlei – O. proschii – O. pulvinata – O. pumila – O. quocensis – O. racemosa – O. recurva – O. rhabdina – O. richardsonioides – O. rigidula – O. robinsonii – O. rosmarinifolia – O. rosulata – O. rudis – O. ruelliformis – O. rufescens – O. rupicola – O. salzmannii – O. santubongensis – O. saxifragoides – O. schaeferi – O. sclerophylla – O. scoparia – O. scopulorum – O. sedgwickii – O. seineri – O. selleana – O. sieberi – O. sipaneoides – O. stocksii – O. stolonifera – O. stricta – O. subdivaricata – O. subtilior – O. subulata – O. succosa – O. symplociformis – O. taborensis – O. tardavelina – O. tenella – O. tenerrima – O. tenuifolia – O. tenuis – O. thomsonii – O. thysanota – O. tonkinensis – O. toussidana – O. triflora – O. umbellata – O. umbrosa – O. uncinelloides – O. uvinsae – O. vaginata – O. valerianelloides – O. valida – O. vasudevanii – O. verrucitesta – O. viarum – O. villosostipulata – O. viscida – O. wauensis – O. wiedemannii – O. willdenowiana – O. xanthochroa – O. yunnanensis
Name

Oldenlandia L., Sp. Pl. 1: 119. (1753)

Type species: Oldenlandia corymbosa L., Sp. Pl. 1: 119. (1753)

Synonyms

Homotypic
Hedyotis sect. Oldenlandia (L.) Wight & Arn., Prodr. Fl. Ind. Orient. 1: 413. (1834)
Hedyotis sect. Oldenlandia F.Muell., Fragmenta Phytographiae Australiae 8. (1874)
Hedyotis subg. Oldenlandia (L.) Fosberg
Heterotypic
Listeria Neck., Elem. Bot. 1: 206 (1790), opus utique oppr.
Cormylus Raf., Ann. Gen. Sci. Phys. 3: 225 (1820), nom. provis.
Gerontogea Cham. & Schltdl., Linnaea 4: 154 (1829)
Karamyschewia Fisch. & C.A.Mey., Bull. Soc. Imp. Naturalistes Moscou 8: 266 (1838)
Stelmotis Raf., New Fl. 4: 101 (1838)
Stelmanis Raf., Autik. Bot.: 13 (1840)
Theyodis A.Rich., Tent. Fl. Abyss. 1: 364 (1848)
Dyctiospora Reinw. ex Korth., Ned. Kruidk. Arch. 2(2): 157 (1851)
Mitratheca K.Schum., Bot. Jahrb. Syst. 33: 335 (1903)
Eionitis Bremek., Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2, 48(2): 165 (1952)
Thecorchus Bremek., Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2, 48(2): 54 (1952)

References

Linnaeus, C. 1753. Species Plantarum 1: 119.
Gibbons, K.L. 2020. Hedyotis, Oldenlandia and related genera (Rubiaceae: Spermacoceae) in Australia: New genera and new combinations in an Asian‐Australian‐Pacific lineage. Taxon. The Journal of the International Association for Plant Taxonomy 69(3): 515-542. DOI: 10.1002/tax.12236 Paywall Reference page.
Govaerts, R. et al. 2021. Oldenlandia in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Oct. 3. Reference page.
International Plant Names Index. 2018. Oldenlandia. Published online. Accessed: Dec. 31 2018.
Neupane, S., Dessein, S., Wikström, N., Lewis, P.O., Long, C., Bremer, B. & Motley, T.J. 2015. The Hedyotis-Oldenlandia complex (Rubiaceae: Spermacoceae) in Asia and the Pacific: Phylogeny revisited with new generic delimitations. Taxon 64(2): 299-322. DOI: 10.12705/642.8 PDF. Reference page.
Tropicos.org 2018. Oldenlandia. Missouri Botanical Garden. Published on the internet. Accessed: 2018 Dec. 31.

Oldenlandia is a genus of flowering plants in the family Rubiaceae. It is pantropical in distribution and has about 240 species.[1][2] The type species for the genus is Oldenlandia corymbosa.[3]

Oldenlandia was named by Linnaeus in 1753 in Species Plantarum.[4] The name honors the Danish botanist Henrik Bernard Oldenland (c.1663-1699).[5] Some species are important in ethnomedicine; a number (usually island endemics) are threatened species, with one species and one variety being completely extinct already.

Some botanists have not recognized Oldenlandia, but have placed some or all of its species in a broadly defined Hedyotis.[6] More recently, the circumscription of Hedyotis has been narrowed to a monophyletic group of about 115 species and no longer includes Oldenlandia.[7] The genus Oldenlandia, as presently defined, is several times polyphyletic and will eventually be reduced to a group of species closely related to the type species. This group, known informally as Oldenlandia sensu stricto, is sister to a section of Kohautia that will eventually be separated from Kohautia and named as a new genus.[7]
Selected species

Oldenlandia adscensionis (extinct: 1889)
Oldenlandia aegialoides Bremek.
Oldenlandia affinis
Oldenlandia albonervia (Beddome) Gamble
Oldenlandia aretioides
Oldenlandia balfourii
Oldenlandia bicornuta
Oldenlandia cana Bremek.
Oldenlandia capensis
Oldenlandia cornata Craib
Oldenlandia corymbosa L.
Oldenlandia diffusa
Oldenlandia forcipistipula Verdc.
Oldenlandia galioides
Oldenlandia gibsonii
Oldenlandia glauca Blatter
Oldenlandia lanceolata Craib
Oldenlandia lancifolia (Schumacher) DC.
Oldenlandia marcanii Craib
Oldenlandia microtheca (D.F.K.Schldl. & Cham.) DC.
Oldenlandia ocellata
Oldenlandia oxycoccoides Bremek.
Oldenlandia patula Bremek.
Oldenlandia polyclada (F.Muell.) F.Muell.
Oldenlandia pulvinata
Oldenlandia sieberi Baker
Oldenlandia sieberi var. congesta
Oldenlandia sieberi var. sieberi (extinct)
Oldenlandia spathulata
Oldenlandia tenelliflora
Oldenlandia tenelliflora var. papuana
Oldenlandia thysanota (Halford) Halford
Oldenlandia umbellata
Oldenlandia uvinsae Verdc.
Oldenlandia vasudevanii

References

Inge Groeninckx, Steven Dessein, Helga Ochoterena, Claes Persson, Timothy J. Motley, Jesper Kårehed, Birgitta Bremer, Suzy Huysmans, and Erik Smets. 2009. "Phylogeny of the herbaceous tribe Spermacoceae (Rubiaceae) based on plastid DNA data". Annals of the Missouri Botanical Garden 96(1):109-132.
David J. Mabberley. 2008. Mabberley's Plant-Book third edition (2008). Cambridge University Press: UK. ISBN 978-0-521-82071-4
Oldenlandia In: Index Nominum Genericorum. In: Regnum Vegetabile (see External links below).
Carolus Linnaeus. 1753. Species Plantarum 1:119. Laurentii Salvii. (see External Links below).
Umberto Quattrocchi. 2000. CRC World Dictionary of Plant Names, volume III. CRC Press: Baton Rouge, New York, London, Washington DC. ISBN 978-0-8493-2673-8 (vol. III). (see External links below).
Edward E. Terrell (Jun 10, 1996), "Revision of Houstonia (Rubiaceae-Hedyotideae)", Systematic Botany Monographs, 48: 1–118, doi:10.2307/25027862, JSTOR 25027862
Jesper Kårehed, Inge Groeninckx, Steven Dessein, Timothy J. Motley, and Birgitta Bremer. 2008. "The phylogenetic utility of chloroplast and nuclear DNA markers and the phylogeny of the Rubiaceae tribe Spermacoceae". Molecular Phylogenetics and Evolution 49(3):843-866. doi:10.1016/j.ympev.2008.09.025

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