| 1 | Aplectrum | hyemale | Puttyroot | Orchids | Orchidaceae | Magnoliopsida |
| 2 | Arethusa | bulbosa | Dragon's Mouth Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 3 | Bletilla | striata | Hyacinth Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 4 | Calopogon | tuberosus var. tuberosus | Common Grass-pink | Orchids | Orchidaceae | Magnoliopsida |
| 5 | Cleistesiopsis | divaricata | Spreading Pogonia | Orchids | Orchidaceae | Magnoliopsida |
| 6 | Corallorhiza | maculata | Spotted Coralroot | Orchids | Orchidaceae | Magnoliopsida |
| 7 | Corallorhiza | odontorhiza var. odontorhiza | Autumn Coralroot | Orchids | Orchidaceae | Magnoliopsida |
| 8 | Corallorhiza | trifida | Early Coralroot | Orchids | Orchidaceae | Magnoliopsida |
| 9 | Corallorhiza | wisteriana | Spring Coralroot | Orchids | Orchidaceae | Magnoliopsida |
| 10 | Cypripedium | acaule | Pink Lady's Slipper | Orchids | Orchidaceae | Magnoliopsida |
| 11 | Cypripedium | candidum | Small White Lady's Slipper | Orchids | Orchidaceae | Magnoliopsida |
| 12 | Cypripedium | parviflorum var. parviflorum | Yellow Lady's Slipper | Orchids | Orchidaceae | Magnoliopsida |
| 13 | Cypripedium | reginae | Showy Lady's Slipper | Orchids | Orchidaceae | Magnoliopsida |
| 14 | Dactylorhiza | viridis | Long-bracted Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 15 | Epipactis | helleborine | Broadleaf Helleborine | Orchids | Orchidaceae | Magnoliopsida |
| 16 | Galearis | spectabilis | Showy Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 17 | Goodyera | pubescens | Downy Rattlesnake Plantain | Orchids | Orchidaceae | Magnoliopsida |
| 18 | Goodyera | repens | Lesser Rattlesnake Plantain | Orchids | Orchidaceae | Magnoliopsida |
| 19 | Goodyera | tesselata | Checkered Rattlesnake Plantain | Orchids | Orchidaceae | Magnoliopsida |
| 20 | Hexalectris | spicata var. spicata | Spike Crested Coralroot | Orchids | Orchidaceae | Magnoliopsida |
| 21 | Isotria | medeoloides | Small Whorled Pogonia | Orchids | Orchidaceae | Magnoliopsida |
| 22 | Isotria | verticillata | Large Whorled Pogonia | Orchids | Orchidaceae | Magnoliopsida |
| 23 | Liparis | liliifolia | Large Twayblade | Orchids | Orchidaceae | Magnoliopsida |
| 24 | Liparis | loeselii | Bog Twayblade | Orchids | Orchidaceae | Magnoliopsida |
| 25 | Malaxis | unifolia | Green Adder's Mouth Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 26 | Neottia | bifolia | Southern Twayblade | Orchids | Orchidaceae | Magnoliopsida |
| 27 | Neottia | cordata | Heartleaf Twayblade | Orchids | Orchidaceae | Magnoliopsida |
| 28 | Neottia | smallii | Appalachian Twayblade | Orchids | Orchidaceae | Magnoliopsida |
| 29 | Platanthera | blephariglottis var. blephariglottis | White-fringed Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 30 | Platanthera | ciliaris | Yellow-fringed Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 31 | Platanthera | clavellata | Small Green Wood Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 32 | Platanthera | cristata | Crested Yellow Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 33 | Platanthera | flava | Palegreen Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 34 | Platanthera | flava var. flava | Southern Palegreen Orchid (flava) | Orchids | Orchidaceae | Magnoliopsida |
| 35 | Platanthera | flava var. herbiola | Palegreen Orchid (herbiola) | Orchids | Orchidaceae | Magnoliopsida |
| 36 | Platanthera | grandiflora | Greater Purple-fringed Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 37 | Platanthera | lacera | Green-fringed Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 38 | Platanthera | orbiculata | Lesser Roundleaf Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 39 | Platanthera | peramoena | Purple Fringeless Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 40 | Platanthera | psycodes | Lesser Purple-fringed Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 41 | Platanthera | shriveri | Shriver's Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 42 | Pogonia | ophioglossoides | Rose Pogonia | Orchids | Orchidaceae | Magnoliopsida |
| 43 | Spiranthes | arcisepala | Appalachian Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 44 | Spiranthes | bightensis | Atlantic Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 45 | Spiranthes | cernua | Nodding Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 46 | Spiranthes | lacera | Slender Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 47 | Spiranthes | lacera var. gracilis | Southern Slender Lady's Tresses (gracilis) | Orchids | Orchidaceae | Magnoliopsida |
| 48 | Spiranthes | lacera var. lacera | Northern Slender Lady's Tresses (lacera) | Orchids | Orchidaceae | Magnoliopsida |
| 49 | Spiranthes | lucida | Shining Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 50 | Spiranthes | ochroleuca | Yellow Nodding Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 51 | Spiranthes | ovalis var. erostellata | October Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 52 | Spiranthes | praecox | Green-veined Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 53 | Spiranthes | romanzoffiana | Hooded Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 54 | Spiranthes | tuberosa | Little Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 55 | Spiranthes | vernalis | Spring Lady's Tresses | Orchids | Orchidaceae | Magnoliopsida |
| 56 | Tipularia | discolor | Cranefly Orchid | Orchids | Orchidaceae | Magnoliopsida |
| 57 | Triphora | trianthophora | Nodding Pogonia | Orchids | Orchidaceae | Magnoliopsida |