Amerorchis rotundifolia (Banks) Hulten
Calypso bulbosa (Linnaeus) Oakes var. americana (R. Brown) Luer
Coeloglossum viride (Linnaeus) Hartman var. virescens (Muhlenberg) Luer
Corallorhiza maculata (Rafinesque) Rafinesque var. maculata
Corallorhiza maculata (Rafinesque) Rafinesque var. occidentalis (Lindley) Ames
Corallorhiza striata Lindley var. striata
Corallorhiza trifida Chatelain
Cypripedium montanum Douglas ex Lindley
Cypripedium parviflorum Salisb. var. makasin (Farwell) Sheviak
Cypripedium parviflorum Salisb. var. pubescens (Willdenow) Knight
Cypripedium passerinum Richmond var. passerinum
Goodyera oblongifolia Rafinesque
Goodyera repens (Linnaeus) R. Brown
Listera cordata (Linnaeus) R. Brown var. cordata
Malaxis brachypoda (Gray) Fernald
Malaxis paludosa (Linnaeus) Swartz
Piperia unalascensis (Sprengel) Rydberg.
Platanthera dilatata (Pursh) Lindley var. dilatata
Platanthera hyperborea (Linnaeus) Lindley var. hyperborea
Platanthera obtusata (Banks & Pursh) Lindley
Platanthera orbiculata (Pursh) Lindley
Spiranthes romanzoffiana Chamisso
Last revised: Friday, September 13, 1996