Calypso bulbosa var. americana (R. Br. ex Ait. f.) Luer  
Family: Orchidaceae
fairy slipper
[Cytherea bulbosa (L.) House p.p.]
Calypso bulbosa var. americana image
Photo ©Al Schneider, swcoloradowildflowers.com  
Calypso bulbosa var. americana
Calypso bulbosa var. americana image
Photo ©Al Schneider, swcoloradowildflowers.com  
Calypso bulbosa var. americana image
Photo ©Al Schneider, swcoloradowildflowers.com  
Calypso bulbosa var. americana image
Arizona State University Herbarium  
Calypso bulbosa var. americana image
Arizona State University Herbarium