ram's-head lady's-slipper

[ramz-hed]
noun
  1. a rare, slender-stemmed orchid, Cypripedium arietinum, of northeastern North America, that has crimson-streaked, whitish-lipped flowers with purple sepals and grows in moist soil.

Origin of ram's-head lady's-slipper

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018