Species of Koenigia are annual or perennial herbaceous plants, growing from taproots. The flowers are arranged in terminal or axillary inflorescences. The flowers have pale tepals: white, greenish to yellowish white or pink. The seeds are borne in achenes that are usually brown or black in colour and not winged.[2]
Taxonomyedit
The genus Koenigia was erected by Carl Linnaeus in 1767, initially for the type speciesKoenigia islandica.[2] The boundaries between genera in the family Polygonaceae, and the relationships among them, have long been a problem. At one time, many species were placed in the genus Polygonum. Koenigia is placed in the subfamily Polygonoideae, tribe Persicarieae, whose taxonomic history has been described as "exceptionally convoluted, even by Polygonaceae standards".[2]
A molecular phylogenetic study of the subfamily Polygonoideae in 2015 showed that the genus Koenigia was polyphyletic with respect to the genus Aconogonon. An earlier study had reached a similar conclusion, and had suggested that extra genera be created to maintain monophyletic taxa.[3] The authors of the 2015 study preferred the alternative of merging the two genera,[2] a proposal accepted by other sources.[1] Using broad circumscriptions of the genera, the 2015 study suggested that relationships within the tribe Persicarieae were:[2]
Persicarieae
Persicaria (comprising sections Echinocaulon, Tovara and Cephalophilon)
Koenigia species are found in meadows, along stream banks, or on rocky slopes in arctic, temperate and alpine regions of the Northern Hemisphere.[3]
Referencesedit
^ abcd"Koenigia L.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-02-24
^ abcdeSchuster, Tanja M.; Reveal, James L.; Bayly, Michael J. & Kron, Kathleen A. (2015), "An updated molecular phylogeny of Polygonoideae (Polygonaceae): Relationships of Oxygonum, Pteroxygonum, and Rumex, and a new circumscription of Koenigia", Taxon, 64 (6): 1188–1208, doi:10.12705/646.5
^ abFan, D.-M.; Chen, J.-H.; Meng, Y.; Wen, J.; Huang, J.-L. & Yang, Y.-P. (2013), "Molecular phylogeny of Koenigia L. (Polygonaceae: Persicarieae): Implications for classification, character evolution and biogeography.", Molecular Phylogenetics and Evolution, 69 (3): 1093–1100, doi:10.1016/j.ympev.2013.08.018, PMID 23994356
March 12, 2024
koenigia, described, philibert, commerçon, synonym, ofdombeya, genus, plants, family, polygonaceae, genus, aconogonon, been, merged, into, phytolaccifoliascientific, classificationkingdom, plantaeclade, tracheophytesclade, angiospermsclade, eudicotsorder, cary. Koenigiaas described by Philibert Commercon is a synonym ofDombeya Koenigia is a genus of plants in the family Polygonaceae The genus Aconogonon has been merged into Koenigia KoenigiaKoenigia phytolaccifoliaScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsOrder CaryophyllalesFamily PolygonaceaeSubfamily PolygonoideaeGenus KoenigiaL 1 SpeciesSee text Synonyms 1 Aconogonon Meisn Rchb Macounastrum SmallPleuropteropyrum H GrossRubrivena M Kral Contents 1 Description 2 Taxonomy 2 1 Species 3 Distribution and habitat 4 ReferencesDescription editSpecies of Koenigia are annual or perennial herbaceous plants growing from taproots The flowers are arranged in terminal or axillary inflorescences The flowers have pale tepals white greenish to yellowish white or pink The seeds are borne in achenes that are usually brown or black in colour and not winged 2 Taxonomy editThe genus Koenigia was erected by Carl Linnaeus in 1767 initially for the type species Koenigia islandica 2 The boundaries between genera in the family Polygonaceae and the relationships among them have long been a problem At one time many species were placed in the genus Polygonum Koenigia is placed in the subfamily Polygonoideae tribe Persicarieae whose taxonomic history has been described as exceptionally convoluted even by Polygonaceae standards 2 A molecular phylogenetic study of the subfamily Polygonoideae in 2015 showed that the genus Koenigia was polyphyletic with respect to the genus Aconogonon An earlier study had reached a similar conclusion and had suggested that extra genera be created to maintain monophyletic taxa 3 The authors of the 2015 study preferred the alternative of merging the two genera 2 a proposal accepted by other sources 1 Using broad circumscriptions of the genera the 2015 study suggested that relationships within the tribe Persicarieae were 2 Persicarieae Persicaria comprising sections Echinocaulon Tovara and Cephalophilon BistortaKoenigia including Aconogonon Species edit As of February 2019 update Plants of the World Online accepted the following species 1 Koenigia alaskana Small T M Schust amp Reveal Koenigia alpina All T M Schust amp Reveal Koenigia campanulata Hook f T M Schust amp Reveal Koenigia cathayana A J Li T M Schust amp Reveal Koenigia chuanzangensis Z Z Zhou amp Y J Min Koenigia coriaria Grig T M Schust amp Reveal Koenigia cyanandra Diels Mesicek amp Sojak Koenigia davisiae W H Brewer ex A Gray T M Schust amp Reveal Koenigia delicatula Meisn H Hara Koenigia divaricata L T M Schust amp Reveal Koenigia fennica f Reiersen T M Schust amp Reveal Koenigia fertilis Maxim Koenigia filicaulis Wall ex Meisn T M Schust amp Reveal Koenigia forrestii Diels Mesicek amp Sojak Koenigia hedbergii Bo Li amp W Du Koenigia hookeri Meisn T M Schust amp Reveal Koenigia islandica L Koenigia jurii A K Skvortsov T M Schust amp Reveal Koenigia lichiangensis W W Sm T M Schust amp Reveal Koenigia limosa Kom T M Schust amp Reveal Koenigia mollis D Don T M Schust amp Reveal Koenigia nepalensis D Don Koenigia nummularifolia Meisn Mesicek amp Sojak Koenigia ocreata L T M Schust amp Reveal Koenigia panjutinii Kharkev T M Schust amp Reveal Koenigia phytolaccifolia Meisn ex Small T M Schust amp Reveal Koenigia pilosa Maxim Koenigia polystachya Wall ex Meisn T M Schust amp Reveal Koenigia relicta Kom T M Schust amp Reveal Koenigia rumicifolia Royle ex Bab T M Schust amp Reveal Koenigia songarica Schrenk T M Schust amp Reveal Koenigia tortuosa D Don T M Schust amp Reveal Koenigia tripterocarpa A Gray T M Schust amp Reveal Koenigia weyrichii F Schmidt T M Schust amp Reveal Koenigia yatagaiana T Mori T C Hsu amp S W ChungDistribution and habitat editKoenigia species are found in meadows along stream banks or on rocky slopes in arctic temperate and alpine regions of the Northern Hemisphere 3 References edit a b c d Koenigia L Plants of the World Online Royal Botanic Gardens Kew retrieved 2019 02 24 a b c d e Schuster Tanja M Reveal James L Bayly Michael J amp Kron Kathleen A 2015 An updated molecular phylogeny of Polygonoideae Polygonaceae Relationships of Oxygonum Pteroxygonum and Rumex and a new circumscription of Koenigia Taxon 64 6 1188 1208 doi 10 12705 646 5 a b Fan D M Chen J H Meng Y Wen J Huang J L amp Yang Y P 2013 Molecular phylogeny of Koenigia L Polygonaceae Persicarieae Implications for classification character evolution and biogeography Molecular Phylogenetics and Evolution 69 3 1093 1100 doi 10 1016 j ympev 2013 08 018 PMID 23994356 Retrieved from https en wikipedia org w index php title Koenigia amp oldid 1139851152, wikipedia, wiki, book, books, library,
