Tropicbird orchid Angraecum Seychellarum is the national flower of Seychelles found in the dry craggy limestone champignon of Aldebra.
In the case of Angraecum sesquipedale, a species from Madagascar, on observing the 30 cm spur in the lip, Charles Darwin made the hypothesis that, since the nectar was at the bottom of the spur, a pollinator must exist with a tongue at least that long.
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However, in 1903, the predicted pollinator was discovered, a hawk moth then named Xanthopan morganii praedicta ("praedicta" meaning "the predicted one")