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Home  /  Plants  /  Budburst Species  /  Cypripedium arietinum
Phenology Observation Sheet for Wildflowers and Herbs

COMMON NAME

ram's-head lady's slipper

SCIENTIFIC NAME

Cypripedium arietinum

ALSO KNOWN AS

rams' head, ram's head lady's slipper orchid

Plant family

Orchid (Orchidaceae)

Plant group

Wildflowers and Herbs

This native, herbaceous perennial, rare plant is one of the smaller Cypripediums. It often is found growing in small groups and is difficult to spot if flowers are absent.
7 reports
2+
OBSERVERS
7+
OBSERVATIONS
!

Identification hints

The flower is distinct in its maroon coloration and small slipper shape. It is an early blooming plant, with a rather short bloom time.
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Did you know?

Its name is thought to be related to its flower shape. To some, the blossom resembles the head of a charging ram.
DISTRIBUTION IN TH U.S.
Connecticut , Massachusetts , Maine , Michigan , Minnesota , New Hampshire , New York , Rhode Island , Vermont , Wisconsin
HABITAT
Boreal forests
ATTRIBUTES
Leaves
Green monocot leaves, typically 3, but sometimes 4 or 5
Flowers
The flower is typically maroon and white, with 3 unfused sepals and 3 petals including the "slipper".
Fruits
A dark brown seed capsule dehiscing, or bursting open, in autumn.
Bloom Time
May to June

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