Cypripedium arietinum

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Ram's-Head Lady's-Slipper

Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Family: Orchidaceae
Genus: Cypripedium
Species: C. arietinum
Binomial name
Cypripedium arietinum
R.Br.

The rare Ram's-Head Lady's-Slipper, Cypripedium arietinum, is an orchid that is native to the alvars around the Great Lakes in North America.

The plant grows to 10-40 cm (4-16 in), and the flowers may reach 1-2 cm (0.5-0.75 in). It flowers from May to June, producing brownish-green flowers with a pink and white lip.

The Ram's-Head Lady's-Slipper is difficult to cultivate, and rarely survives transplantation to a garden from the wild.

[edit] Conservation

Uncommon in Ontario, rare in Manitoba, the Ram's-Head Lady's-Slipper is a threatened plant species in many areas within its range, including Wisconsin, Michigan, and Saskatchewan. It is believed to be extirpated in Connecticut.

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