There are many species of Habenaria orchids, including several native to North America. But this one wins the prize for unusual flowers. Enlarge the picture above to appreciate the individual flowers.

Habenaria medusa is a terrestrial orchid (it grows in the ground, whereas most of the tropical orchids we cultivate grow on tree branches), so Phipps Conservatory keeps this one in a big terra-cotta pot that probably takes two strong volunteers to move.