Gaertnera is a genus of flowering plants in the family Rubiaceae. There are at least 85 species distributed across the Old World tropics from Africa to Asia.Gaertnera. Selected Rubiaceae Tribes and Genera. Tropicos.
Plants in this genus are variable in appearance and biology. Most all are regional endemics, plants limited to a small geographical area and narrowly adapted to local conditions.Malcomber, S. T. (2002). of Gaertnera Lam. (Rubiaceae) based on multiple DNA markers: evidence of a rapid radiation in a widespread, morphologically diverse genus. Evolution, 56(1), 42-57.Malcomber, S. T., & Taylor, C. M. (2009). A systematic revision of Gaertnera (Rubiaceae, Gaertnereae) 1. Annals of the Missouri Botanical Garden, 96(4), 575-671. Most grow in moist forest habitat.
These are generally woody plants with clusters of white, pink, or red flowers and purple-black fruits. Some species are distylous, with plants having one of two flower morphs. Other species are dioecious, with plants having either male or female flowers. Dioecious species are generally found in Southeast Asia.
Species , Plants of the World Online accepted the following species:
Gaertnera alata Bremek. ex Malcomber & A.P.Davis Gaertnera alstonii Malcomber Gaertnera aphanodioica Malcomber Gaertnera arenaria Baker Gaertnera arenarioides C.M.Taylor Gaertnera aurea Malcomber Gaertnera bambusifolia Malcomber & A.P.Davis Gaertnera belumutensis Malcomber Gaertnera bieleri (De Wild.) E.M.A.Petit Gaertnera breviflora C.M.Taylor Gaertnera brevipedicellata Malcomber & A.P.Davis Gaertnera calycina Bojer Gaertnera capitulata Malcomber Gaertnera cardiocarpa Boivin ex Baill. Gaertnera cooperi Hutch. & M.B.Moss Gaertnera crassiflora Bojer Gaertnera cuneifolia Bojer Gaertnera darcyana Malcomber & A.P.Davis Gaertnera divaricata (Thwaites) Thwaites Gaertnera diversifolia Ridl. Gaertnera drakeana Aug.DC. Gaertnera edentata Bojer Gaertnera eketensis Wernham Gaertnera fractiflexa Beusekom Gaertnera furcellata (Baill. ex Vatke) Malcomber & A.P.Davis Gaertnera gabonensis Malcomber Gaertnera × gardneri Thwaites Gaertnera globigera Beusekom Gaertnera grisea Hook.f. ex C.B.Clarke Gaertnera guillotii Hochr. Gaertnera hirsuta C.M.Taylor Gaertnera hirtiflora Verdc. Gaertnera hispida Aug.DC. Gaertnera humblotii Drake Gaertnera ianthina Malcomber Gaertnera inflexa Boivin ex Baill. Gaertnera junghuhniana Miq. Gaertnera kochummenii Malcomber Gaertnera laevis C.M.Taylor Gaertnera letouzeyi Malcomber Gaertnera leucothyrsa (K.Krause) E.M.A.Petit Gaertnera liberiensis E.M.A.Petit Gaertnera littoralis C.M.Taylor Gaertnera longifolia Bojer Gaertnera longivaginalis (Schweinf. ex Hiern) E.M.A.Petit Gaertnera lowryi Malcomber Gaertnera luteocarpa Jongkind Gaertnera macrobotrys Baker Gaertnera macrostipula Baker Gaertnera madagascariensis (Hook.f.) Malcomber & A.P.Davis Gaertnera malcomberiana C.M.Taylor Gaertnera masoalana C.M.Taylor Gaertnera microphylla Capuron ex Malcomber & A.P.Davis Gaertnera monstruosa Malcomber Gaertnera monticola Jongkind Gaertnera nitida C.M.Taylor Gaertnera obesa Hook.f. ex C.B.Clarke Gaertnera oblanceolata King & Gamble Gaertnera obovata Baker Gaertnera paniculata Benth. Gaertnera pauciflora Malcomber & A.P.Davis Gaertnera pedunculata Jongkind Gaertnera pendula Bojer Gaertnera phanerophlebia Baker Gaertnera phyllosepala Baker Gaertnera phyllostachya Baker Gaertnera psychotrioides (DC.) Baker Gaertnera rakotovaoana C.M.Taylor Gaertnera ramosa Ridl. Gaertnera raphaelii Malcomber Gaertnera razakamalalana C.M.Taylor Gaertnera robusta C.M.Taylor Gaertnera rosea Thwaites ex Benth. Gaertnera rotundifolia Bojer Gaertnera rubra C.M.Taylor Gaertnera schatzii Malcomber Gaertnera schizocalyx Bremek. Gaertnera sclerophylla C.M.Taylor Gaertnera spicata K.Schum. Gaertnera sralensis (Pierre ex Pit.) Kerr Gaertnera stictophylla (Hiern) E.M.A.Petit Gaertnera ternifolia Thwaites Gaertnera trachystyla (Hiern) E.M.A.Petit Gaertnera vaginans (DC.) Merr. Gaertnera vaginata Poir. Gaertnera velutina C.M.Taylor Gaertnera vernicosa C.M.Taylor Gaertnera viminea Hook.f. ex C.B.Clarke Gaertnera walkeri (Arn.) Blume Gaertnera xerophila C.M.Taylor
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