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On the distinction of Dactylorhiza baltica and D. pardalina (Orchidaceae) and the systematic affinities of geographically intermediate populations

2009; Wiley; Volume: 28; Issue: 1 Linguagem: Inglês

10.1111/j.1756-1051.2009.00450.x

1756-1051

Henrik Æ. Pedersen, Mikael Hedrén,

Plant Pathogens and Resistance

Nordic Journal of BotanyVolume 28, Issue 1 p. 1-12 On the distinction of Dactylorhiza baltica and D. pardalina (Orchidaceae) and the systematic affinities of geographically intermediate populations Henrik Æ. Pedersen, Henrik Æ. PedersenSearch for more papers by this authorMikael Hedrén, Mikael HedrénSearch for more papers by this author Henrik Æ. Pedersen, Henrik Æ. PedersenSearch for more papers by this authorMikael Hedrén, Mikael HedrénSearch for more papers by this author First published: 01 February 2010 https://doi.org/10.1111/j.1756-1051.2009.00450.xCitations: 17 H. Æ. Pedersen ([email protected]), Botanical Garden and Museum, Natural History Museum of Denmark, Univ. of Copenhagen, Gothersgade 130, DK–1123 Copenhagen K, Denmark. – M. Hedrén, Plant Ecology and Systematics, Dept of Ecology, Lund Univ., Sölvegatan 37, SE–223 62 Lund, Sweden. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract The eastern European Dactylorhiza baltica (Klinge) N. I. Orlova and the western European D. pardalina (Pugsl.) Aver. (= D. praetermissa var. junialis (Verm.) Sengh) are usually considered to have non-overlapping geographic distributions, for which reason it has rarely been realized that they are morphologically similar. They have not previously been thoroughly compared by molecular methods, and no existing flora or revision has convincingly demonstrated that they can be distinguished by morphological characters. In reality, they might be 'political' rather than natural taxa. Prompted by the recent discovery of geographically intermediate populations (in eastern Denmark), originally identified as D. baltica, we have addressed this problem by analysis of morphometric data as well as molecular data from allozyme markers, plastid haplotypes, nuclear ITS alleles and nuclear microsatellites. Dactylorhiza baltica and D. pardalina turned out to be clearly distinguished genetically, and although they are morphologically similar, a few characters were identified that distinguish with 81–85% certainty between the two taxa. Molecular and morphometric data place the geographically intermediate populations in D. pardalina. 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