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1 Tree was published in this study

Generic delimitation and phylogenetic relationships within the subtribe Chironiinae (Chironieae: Gentianaceae), with special reference to Centaurium: evidence from nrDNA and cpDNA sequences.
Mansion and Struwe. (2004). Mol Phylogenet Evol.
Zeltnera texensis Zeltnera calycosa Zeltnera beyrichii Zeltnera glandulifera Zeltnera arizonica Zeltnera multicaulis Zeltnera setacea Zeltnera madrensis Zeltnera martinii Zeltnera wigginsii Zeltnera stricta Zeltnera quitensis Zeltnera trichantha Zeltnera venusta Zeltnera abramsii Schenkia australis Schenkia clementii Schenkia spicata Exaculum pusillum Sabatia stellaris Sabatia dodecandra Sabatia campestris Gyrandra tenuifolia Gyrandra brachycalyx Eustoma exaltatum Eustoma exaltatum subsp. russellianum Chironia baccifera Orphium frutescens Chironia linoides Centaurium cachanlahuen Centaurium favargeri Centaurium gypsicola Centaurium scilloides Centaurium erythraea Centaurium littorale Centaurium tenuiflorum Centaurium pulchellum Centaurium maritimum Blackstonia grandiflora Blackstonia perfoliata Blackstonia imperfoliata Ixanthus viscosus Cicendia filiformis Cicendia quadrangularis Canscora alata Canscora andrographioides Canscora diffusa Microrphium pubescens Symphyllophyton caprifolioides Coutoubea spicata
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