Amerorchis rotundifolia (Banks) Hulten
Calopogon tuberosus (Linnaeus) Britt. var. tuberosus
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 trifida Chatelain
Cypripedium parviflorum Salisb. var. makasin (Farwell) Sheviak
Cypripedium parviflorum Salisb. var. pubescens (Willdenow) Knight
Dactylorhiza majalis (Reichenbach filius) Summer. subsp. praetermissa (Druce) D. M. Moore & Soo
Goodyera oblongifolia Rafinesque
Goodyera repens (Linnaeus) R. Brown
Listera convallarioides (Swartz) Nuttall
Listera cordata (Linnaeus) R. Brown var. cordata
Malaxis brachypoda (Gray) Fernald
Platanthera blephariglottis (Willdenow) Lindley var. blephariglottis
Platanthera clavellata (Michaux) Luer var. ophioglossoides (Fernald) P. M. Brown
Platanthera dilatata (Pursh) Lindley var. dilatata
Platanthera grandiflora (Bigelow) Lindley
Platanthera huronensis (Linnaeus) Lindley
Platanthera hyperborea (Linnaeus) Lindley var. hyperborea
Platanthera lacera (Michaux) G. Don
Platanthera obtusata (Banks & Pursh) Lindley
Platanthera orbiculata (Pursh) Lindley
Platanthera psycodes (Linnaeus) Lindley
Pogonia ophioglossoides (Linnaeus) Ker-Gawler var. ophioglossoides
Pseudorchis albida (Linnaeus) Love & Love subsp. straminea (Fern.) Love & Love
Spiranthes ochroleuca (Rydberg) Rydberg
Spiranthes romanzoffiana Chamisso
Last revised: Friday, September 13, 1996