| Genus - Species - - Year | Subgenus Section Subsection Series | Distribution | #descendants | #photos |
|---|---|---|---|---|
| Aplectrum hyemale 1818 | E. Canada to EC. & E. U.S.A. | 3 | ||
| Arethusa bulbosa 1753 | C. & E. Canada to NC. & E. U.S.A. | 3 | 3 | |
| Calopogon tuberosus 1888 | E. Canada to EC. & E. U.S.A., Bahamas to Cuba | 7 | 19 | |
| Corallorhiza maculata 1817 | Canada to U.S.A. | 6 | ||
| Corallorhiza maculata var. occidentalis 1924 | Canada to U.S.A. | 1 | ||
| Corallorhiza odontorhiza 1818 | SE. Canada, NC. & E. U.S.A. to C. America | 2 | ||
| Corallorhiza odontorhiza var. pringlei 1997 | SE. Canada, NC. & E. U.S.A. to C. America | |||
| Corallorhiza trifida 1760 | Temp. & Subarctic Northern Hemisphere | 7 | ||
| Corallorhiza wisteriana 1829 | U.S.A. to Mexico | |||
| Cypripedium acaule 1789 | Sec. Acaulia | C. & E. Canada to NC. & E. U.S.A. | 4 | 14 |
| Cypripedium candidum 1805 | Sec. Cypripedium Subsec. Cypripedium | S. Canada to NC. & E. U.S.A. | 25 | 1 |
| Cypripedium parviflorum 1791 | Subarctic America to U.S.A. | 34 | 9 | |
| Cypripedium parviflorum var. makasin 1993 | Subarctic America to N. U.S.A. and NE. California | 2 | 1 | |
| Cypripedium parviflorum var. pubescens 1906 | Subarctic America to U.S.A. | 61 | 14 | |
| Cypripedium reginae 1788 | Sec. Cypripedium Subsec. Obtusipetala | C. & E. Canada to NC. & E. U.S.A. | 33 | 12 |
| Dactylorhiza viridis 1997 | Subarctic and Subalpine Northern Hemisphere | 20 | 7 | |
| Dactylorhiza viridis var. virescens 2013 | Russian Far East to Japan, N. America | 1 | ||
| Epipactis helleborine 1769 | Sec. Epipactis | NW. Africa, Europe to China | 17 | 12 |
| Epipactis helleborine subsp. helleborine | Europe to China | 4 | 8 | |
| Galearis spectabilis 1833 | E. Canada to NC. & E. U.S.A. | 9 | ||
| Goodyera pubescens 1813 | SE. Canada to EC. & E. U.S.A. | 5 | 10 | |
| Goodyera repens 1813 | Temp. Northern Hemisphere | 1 | 10 | |
| Goodyera tesselata 1824 | C. & SE. Canada to NC. & NE. U.S.A. | 1 | ||
| Iris domestica 2005 | Himalaya to Japan and Philippines | |||
| Isotria medeoloides 1838 | SE. Ontario to Missouri and North Carolina | 3 | ||
| Isotria verticillata 1808 | SE. Ontario to C. & E. U.S.A. | 7 | ||
| Liparis liliifolia 1825 | SE. Canada to NC. & E. U.S.A. | 1 | 9 | |
| Liparis loeselii 1817 | Liparis | Europe to C. Asia, Sakhalin, C. & E. Canada to NC. & E. U.S.A. | 1 | 8 |
| Malaxis bayardii 1936 | Nova Scotia to South Carolina | |||
| Malaxis monophyllos 1800 | Temp. Northern Hemisphere to Philippines | 3 | ||
| Malaxis monophyllos var. brachypoda 1929 | Alaska to U.S.A. | 1 | ||
| Malaxis unifolia 1803 | E. Canada, C. & E. U.S.A. to C. America, Caribbean | 2 | ||
| Neottia bifolia 2009 | SE. Canada to E. Texas | |||
| Neottia cordata 1817 | Temp. & Subarctic Northern Hemisphere | 4 | ||
| Neottia smallii 1995 | E. U.S.A. (Appalachian Mts.) | |||
| Platanthera aquilonis 1999 | Subarctic America to N. U.S.A. and New Mexico | 1 | 1 | |
| Platanthera blephariglottis 1835 | E. Canada to C. & E. U.S.A. | 4 | 4 | |
| Platanthera ciliaris 1835 | S. Ontaria to C. & E. U.S.A. | 9 | 12 | |
| Platanthera clavellata 1972 | E. Canada to C. & E. U.S.A. | 1 | 4 | |
| Platanthera cristata 1835 | E. U.S.A. to E. Texas | 4 | 11 | |
| Platanthera dilatata 1833 | Komandor Is. to N. America | 4 | 6 | |
| Platanthera flava 1835 | E. Canada to EC. & SE. U.S.A. | 12 | ||
| Platanthera flava var. herbiola 1975 | E. Canada to NC. & E. U.S.A. | 6 | ||
| Platanthera grandiflora 1835 | E. Canada to Wisconsin and Appalachian Mts. | 4 | 13 | |
| Platanthera hookeri 1835 | S. Canada to NC. & NE. U.S.A. | 1 | ||
| Platanthera lacera 1839 | SC. & E. Canada to EC. & E. U.S.A., Costa Rica | 3 | 3 | |
| Platanthera orbiculata 1835 | Subarctic America to N. & E. U.S.A. | |||
| Platanthera orbiculata var. macrophylla 1975 | E. Canada to NE. Appalachian Mts. | 1 | ||
| Platanthera peramoena 1848 | EC. & SE. U.S.A. | |||
| Platanthera psycodes 1835 | E. Canada to EC. & NE. U.S.A. | 4 | 9 | |
| Platanthera shriveri 2008 | E. U.S.A. (Appalachian Mts.) | 1 | ||
| Pogonia ophioglossoides 1816 | C. Canada to EC. & E. U.S.A. | 1 | 14 | |
| Spiranthes casei 1975 | E. Canada to NE. U.S.A. | 1 | ||
| Spiranthes cernua 1817 | E. Canada to C. & E. U.S.A. | 1 | 9 | |
| Spiranthes lacera 1833 | C. & E. Canada to C. & E. U.S.A. | 3 | 2 | |
| Spiranthes lacera var. gracilis 1975 | S. Ontario to C. & E. U.S.A. | 1 | 1 | |
| Spiranthes lucida 1908 | SE. Canada to NC. & E. U.S.A. | |||
| Spiranthes magnicamporum 1973 | S. Canada to C. & EC. U.S.A. | 2 | ||
| Spiranthes ochroleuca 1932 | SE. Canada to E. U.S.A. | 1 | 2 | |
| Spiranthes ovalis 1840 | Ontario to EC. & SE. U.S.A. | 1 | 1 | |
| Spiranthes ovalis var. erostellata 1983 | Ontario to EC. & SE. U.S.A. | |||
| Spiranthes romanzoffiana 1828 | Great Britain, Ireland, Subarctic America to N. & WC. U.S.A. | 2 | 3 | |
| Spiranthes tuberosa 1833 | E. & EC. U.S.A. | 1 | 8 | |
| Spiranthes vernalis 1845 | E. & EC. U.S.A. to Guatemala, Bahamas | 3 | 7 | |
| Tipularia discolor 1818 | EC. & E. U.S.A. | 8 | ||
| Triphora trianthophoros 1901 | SE. Canada, EC. & E. U.S.A. to C. America | 13 |