cypripediums

These lady slippers are not the native hardy cypripediums, or something close to that name, they are paphiopedilum, a tropical native.

From The Greenhouse « Fairegarden 2008

The first summer in the new place, a clump of cypripediums came up by the irrigating ditch at the bottom of the lawn.

The Land of Little Rain 1903

The first summer in the new place, a clump of cypripediums came up by the irrigating ditch at the bottom of the lawn.

The Land of Little Rain Mary Hunter Austin 1901

The next great flower wonders on which we lavished admiration, not only for beauty of color and size, but for their curious shapes, were the cypripediums, called "lady's-slippers" or "Indian moccasins."

The Story of My Boyhood and Youth John Muir 1876

The lip in all the cypripediums is more or less sac-like and inflated.

My Studio Neighbors William Hamilton Gibson 1873

We now have the whole body of cypripediums to choose from, and may reject the calceolous.

The History of Minnesota and Tales of the Frontier 1865