02107nas a2200229   4500008004100000245009000041210006900131260001400200300001600214490000700230520141000237653001401647653002601661100001601687700001701703700002101720700002301741700002101764700002401785700001901809856004901828       2001                        eng d00aA phylogenetic analysis of Diurideae (Orchidaceae) based on plastid DNA sequence data0 aphylogenetic analysis of Diurideae Orchidaceae based on plastid   c2001/01//  a1903 - 19140 v883 aDNA sequence data from plastid matK and trnL-F regions were used in phylogenetic analyses of Diurideae, which indicate that Diurideae are not monophyletic as currently delimited. However, if Chloraeinae and Pterostylidinae are excluded from Diurideae, the remaining subtribes form a well-supported. monophyletic group that is sister to a "spiranthid" clade. Chloraea, Gavilea, and Megastylis pro parte (Chloraeinae) are all placed among the spiranthid orchids and form a grade with Pterostylis leading to a monophyletic Cranichideae. Codonorchis, previously included among Chloraeinae, is sister to Orchideae. Within the more narrowly delimited Diurideae two major lineages are apparent. One includes Diuridinae, Cryptostylidinae, Thelymitrinae, and an expanded Drakaeinae; the other includes Caladeniinae s.s.. Prasophyllinae, and Acianthinae. The achlorophyllous subtribe Rhizanthellinae is a member of Diurideae, but its placement is otherwise uncertain. The sequence-based trees indicate that some morphological characters used in previous classifications, such as subterranean Storage organs, anther position, growth habit, fungal symbionts, and pollination syndromes have more complex evolutionary histories than previously hypothesized. Treatments based upon these characters have produced conflicting classifications, and molecular data offer a tool for reevaluating these phylogenetic hypotheses.10aDiurideae10amolecular systematics1 aKores, Paul1 aMolvray, Mia1 aWeston, Peter, H1 aHopper, Stephen, D1 aBrown, Andrew, P1 aCameron, Kenneth, M1 aChase, Mark, W  uhttps://acianthinae.myspecies.info/node/1925