It is tempting to suggest that both of our species showed a trend towards zoophilous self-pollination as fruit set following hand self-pollination was higher compared to hand cross-pollination.
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Observations on the pollination and breeding systems of two Corybas species (Diurideae; Orchidaceae) by fungus gnats (Mycetophilidae) in southwestern Yunnan, China.
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The sentences
This includes a pronounced trend towards pollination-by-deceit in which orchid flowers provide a predictable suite of floral attractants but fail to offer food rewards, receptive females or suitable brood sites [ 1 , 2 ].