Here is a photo of my camera and tripod set up to take photos of the orchids.
A ladies'-tresses orchid pollination system.You may know that I am fascinated with the variety of pollination mechanisms that orchids employ to insure cross-pollination. These particular ladies'-tresses orchids are no exception, so I might as well share with you, my worldwide readers, what I pointed out to the boys (and others).
First, notice how the flowers spiral up the stem. The lowest flowers on the spike open first, so the ones further up are 'younger'. As the flowers 'age', the internal structure of the flower changes and they effectively turn from male flowers into female flowers. That means the younger, male flowers are near the top of the spike.
I labeled the orchid's pollination system in this photo of a cross-sectioned orchid.
As the flower ages, the viscidium grows farther away from the 'throat' of the flower (more out of the way) and the stigma is better exposed to contact from pollinia from other flowers.
Simple, yet genius!