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Dendrobium christyanum is a species of orchid (Orchidaceae) endemic to the Chinese island of Hainan.
It produces a volatile organic compound that is unrecorded in other plant species. The flowers of this orchid produce a bee pheromone which attracts its pollinator, Vespa bicolor, a species of hornet. The novel feature, first reported in 2009, is supposed to mimic the distress pheromone of the indigenous Asian honey bee Apis cerana (the same chemical as in the European Apis mellifera, which does not occur naturally on Hainan). The chemical compound, (Z)-11-eicosen-1-ol, can be detected by the hornet and is it is assumed this mimicry deceives the insect into visiting the flower without reward (the flowers offer no nectar). V. bicolor preys on honey bees to feed its larvae. The European beewolf (Philanthus triangulum) is also able to detect this compound when hunting bees.
Slender Cane Orchid · Dendrobium aduncum · Ironbark orchid · White butterfly orchid · Buttercup orchid · Dendrobium albosanguineum · Dendrobium amabile · Dendrobium amboinense · Amethyst-colored Dendrobium · Dendrobium amplum · Dendrobium angulatum · Unscented Dendrobium
Text excerpted from the Wikipedia article Dendrobium christyanum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
