Facts About

Accepted Synonyms: none

Spiranthes magnicamporum, also called Great Plains Ladies' Tresses, is widely distributed in central Canada and the United States from Ontario to Mexico, with populations in a few East Coast states. It produces 2-3 basal leaves which usually wither by the time of flowering in the late summer or fall. It bears an inflorescence of up to 40 white, cream-colored, or yellowish flowers which are arranged in a tight spiral. The inflorescence is covered in small hairs, and the labellum curves sharply downwards. The center of the labellum is often colored yellow. Withered leaves at the time of flowering and strongly scented flowers distinguish this orchid from Spiranthes cernua. It can be found on moist to dry meadows, prairies, fields, and fens.

Spiranthes magnicamporum is apparently secure globally, although it is rare throughout much of the eastern and central parts of its range.

Pollination

Although this orchid is capable of agamospermy, bumblebees, such as Bombus fervidus and Bombus nevadensis are documented pollinators. Pollinia attach to the proboscis of Bombus nevadensis.

Ecosystem Type

Fens, meadows, prairie

Characteristics

Native to North America

Yes

North American Conservation Status & Distribution