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Reference Category Journals
DOI 10.1007/s00606-016-1381-8
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Title (Primary) Darwin's legacy in Platanthera: are there more than two species in the Platanthera bifolia/chlorantha group?
Author Durka, W. ORCID logo ; Baum, A.; Michalski, S.G.; Baum, H.
Source Titel Plant Systematics and Evolution
Year 2017
Department BZF; iDiv
Volume 303
Issue 3
Page From 419
Page To 431
Language englisch
Keywords AFLP; Anther distance; Hybridization; Orchidaceae; Platanthera; Spur length
UFZ wide themes RU1;
Abstract In Central Europe, the genus Platanthera traditionally comprised two species, P. chlorantha Cust. ex Rchb. (Pc) and P. bifolia (L.) Rich. (Pb). They are morphologically characterized by a wide and narrow separation of anthers, respectively. However, a third form with intermediate anther distance has repeatedly been hypothesized but only hesitantly accepted. In addition, intermediate morphology has been also used as the main character of P. × hybrida. However, the status of some purported hybrid populations is challenged by the local lack of parental species, their successful reproduction and non-intermediate traits. Despite this unclear situation, detailed genetic and morphological analyses are lacking. Here, we studied morphology and molecular markers within the P. chlorantha/bifolia group in Central Europe. Three morphological groups emerged representing Pc, Pb and a third form, here informally referred to as non-hybrid intermediates (Pn). The latter is characterized, among other trait differences, by intermediate distance between anthers [(0.7)–1–2.2 mm] and long spurs (28–40 mm). Three gene pools were identified, which largely corresponded to the three morphological groups. The Pn gene pool had several high-frequency private alleles substantiating its genetic independence. Some of the Pn populations were previously interpreted as P. × hybrida suggesting that Pn was overlooked hitherto and mistaken to represent hybrids. The non-perfect fit between morphological and genetic groups highlights the potential for fast morphological evolution. Overall, the finding of three distinct lineages within the bifolia/chlorantha group necessitates a thorough reanalysis of reported taxa and a reevaluation of our understanding of their distribution, ecology and evolution.
Persistent UFZ Identifier
Durka, W., Baum, A., Michalski, S.G., Baum, H. (2017):
Darwin's legacy in Platanthera: are there more than two species in the Platanthera bifolia/chlorantha group?
Plant Syst. Evol. 303 (3), 419 - 431 10.1007/s00606-016-1381-8