ram's-head lady's-slipper

American  

[ramz-hed] / ˈræmzˌhɛd /

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.

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Etymology

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

First recorded in 1865–70