Catasetum tridentatum

from The Collaborative International Dictionary of English v.0.48
Monkflower \Monk"flow`er\, n. (Bot.)
   A name of certain curious orchids which bear three kinds of
   flowers formerly referred to three genera, but now
   ascertained to be sexually different forms of the same genus
   ({Catasetum tridentatum}, etc.).
   [1913 Webster]
    

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