What is "cypripedium acaule"

moccasin \moc"ca*sin\, n. [An Indian word. Algonquin makisin.]

1. A shoe made of deerskin, or other soft leather, the sole and upper part being one piece. It is the customary shoe worn by the American Indians.

2. (Zo["o]l.) A poisonous snake of the Southern United States. The water moccasin ( Ancistrodon piscivorus syn. Agkistrodon piscivorus, also called cottonmouth and cottonmouth water moccasin) is usually found in or near water. Above, it is olive brown, barred with black; beneath, it is brownish yellow, mottled with darker. The upland moccasin is Ancistrodon atrofuscus. They resemble rattlesnakes, but are without rattles.

   Moccasin flower (Bot.), a species of lady's slipper ( Cypripedium acaule) found in North America. The lower petal is two inches long, and forms a rose-colored moccasin-shaped pouch. It grows in rich woods under coniferous trees.

Cypripedium acaule is a member of the orchid genus Cypripedium. Members of this genus are commonly referred to as lady's slipper orchids. First described in 1789 by Scottish botanist William Aiton, C. acaule is commonly referred to as the pink lady's slipper, stemless lady's-slipper, or moccasin flower. The pink lady's slipper is the provincial flower of Prince Edward Island, Canada. The pink lady's slipper is also the state wild flower of New Hampshire, United States.