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Greater Butterfly Orchid

Greater Butterfly OrchidThe flowers of greater butterfly orchids have an attractive vanilla scent which gets stonger at night to attract moths which are their main pollinators.

Greater butterfly-orchids are not to be confused with the lesser butterfly-orchid, which are about the same size. The safest way of telling the two apart is by closer examination and comparison of the pollinia - the mass of pollen grains in a plant.

The flowers are in loose spikes of greenish or yellowish-white.

Photographs courtesy of Wikipedia