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Supplemental Information

Morphological data from allopatric populations (summarized in Table 2)

DOI: 10.7287/peerj.preprints.3279v1/supp-1

Morphological data from Botton sympatric population (summarized in Table 2)

DOI: 10.7287/peerj.preprints.3279v1/supp-2

Morphological data from Bois Niau sympatric population (summarized in Table 2)

DOI: 10.7287/peerj.preprints.3279v1/supp-3

Genotype frequencies of species-specific markers in P. bifolia, P. chlorantha species and intermediate morphotypes of two sympatric zones (Table 3)

DOI: 10.7287/peerj.preprints.3279v1/supp-4

Floral scent profile (Table 4)

DOI: 10.7287/peerj.preprints.3279v1/supp-5

Number of seeds (total and viable - see text)

DOI: 10.7287/peerj.preprints.3279v1/supp-6

Viability index (calculated from the data in the previous file - see text)

DOI: 10.7287/peerj.preprints.3279v1/supp-7

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Fabiana Esposito conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Nicolas J. Vereecken conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Maddalena Gammella analyzed the data, wrote the paper, reviewed drafts of the paper.

Rosita Rinaldi performed the experiments, analyzed the data, contributed reagents/materials/analysis tools.

Pascal Laurent performed the experiments, analyzed the data, contributed reagents/materials/analysis tools.

Daniel Tyteca conceived and designed the experiments, performed the experiments, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Field Study Permissions

The following information was supplied relating to field study approvals (i.e., approving body and any reference numbers):

Field experiments were approved by the Département de la Nature et des Forêts of the Walloon Region of Belgium.

Funding

This study was supported by grants-in-aid from the Fonds Scientifique de Recherche of the Université catholique de Louvain for two years between 2013 and 2015. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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