Figure 1.

The orchid Angraecum sesquipedale (also called Darwin's orchid, Christmas orchid, Star of Bethlehem orchid, King of the Angraecums). The nectary on this species of orchid is 25–30 centimeters (10–12 inches) long. Photograph courtesy Umberto Paris.

Harvey Journal of Biology 2009 8:11   doi:10.1186/jbiol118
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