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Plant Database

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Calypso bulbosa var. americana (Fairy slipper)
Glase, Terry

Calypso bulbosa var. americana

Calypso bulbosa (L.) Oakes var. americana (R. Br.) Luer

Fairy Slipper

Orchidaceae (Orchid Family)

Synonym(s): Cytherea bulbosa


USDA Native Status: L48 (N), AK (N), CAN (N)

Calypso bulbosa is chlorophyllous but also hemi-mycoheterotrophic; that is, it makes it own food, but also utilizes at least one fungus species to provide some of its carbon intake. The known fungi involved is Thanatephorus ochraceus, a saprotroph.


From the Image Gallery

2 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Complexity: Simple
Leaf Venation: Parallel

Bloom Information

Bloom Color: White , Purple
Bloom Time: Apr , May , Jun


USA: AK , AZ , CO , ME , MI , MN , MT , NH , NM , NY , SD , UT , VT , WI , WY
Canada: NB , NS , PE

Additional resources

USDA: Find Calypso bulbosa var. americana in USDA Plants
FNA: Find Calypso bulbosa var. americana in the Flora of North America (if available)
Google: Search Google for Calypso bulbosa var. americana


Record Modified: 2016-03-04
Research By: TWC Staff

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