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APA Citation
Abeli, T., Jäkäläniemi, A., Wannas, L., Mutikainen, P., & Tuomi, J. (n.d.). pollen limitation and fruiting failure related to canopy closure in Calypso bulbosa (Orchidaceae), a northern food‐deceptive orchid with a single flower. Botanical journal of the Linnean Society, 171, 744–750. http://access.bl.uk/ark:/81055/vdc_100024501344.0x00002a