Rare Species by County: Hampshire
Last Updated on 3/1/2003
| Taxonomic Group | Scientific Name | Common Name | State Rank | Federal Rank | Most Recent Obs |
| Fish | Acipenser brevirostrum | Shortnose Sturgeon | E | LE | 1992 |
| Fish | Catostomus catostomus | Longnose Sucker | SC | 1991 | |
| Fish | Couesius plumbeus | Lake Chub | E | 1991 | |
| Fish | Hybognathus regius | Eastern Silvery Minnow | SC | 1978 | |
| Fish | Lota lota | Burbot | SC | 1998 | |
| Fish | Notropis bifrenatus | Bridle Shiner | SC | 1998 | |
| Amphibian | Ambystoma jeffersonianum | Jefferson Salamander | SC | 2000 | |
| Amphibian | Ambystoma laterale | Blue-Spotted Salamander | SC | 2000 | |
| Amphibian | Ambystoma opacum | Marbled Salamander | T | 2001 | |
| Amphibian | Gyrinophilus porphyriticus | Spring Salamander | SC | 1996 | |
| Amphibian | Hemidactylium scutatum | Four-Toed Salamander | SC | 1997 | |
| Amphibian | Scaphiopus holbrookii | Eastern Spadefoot | T | 1999 | |
| Reptile | Carphophis amoenus | Eastern Worm Snake | T | 1976 | |
| Reptile | Clemmys guttata | Spotted Turtle | SC | 1999 | |
| Reptile | Clemmys insculpta | Wood Turtle | SC | 2001 | |
| Reptile | Terrapene carolina | Eastern Box Turtle | SC | 2000 | |
| Bird | Accipiter striatus | Sharp-Shinned Hawk | SC | (PS) | 1951 |
| Bird | Ammodramus henslowii | Henslow's Sparrow | E | 1971 | |
| Bird | Ammodramus savannarum | Grasshopper Sparrow | T | (PS) | 1974 |
| Bird | Bartramia longicauda | Upland Sandpiper | E | 1984 | |
| Bird | Botaurus lentiginosus | American Bittern | E | 1998 | |
| Bird | Circus cyaneus | Northern Harrier | T | 1906 | |
| Bird | Cistothorus platensis | Sedge Wren | E | 1989 | |
| Bird | Falco peregrinus | Peregrine Falcon | E | (PS:LE) | 1935 |
| Bird | Gallinula chloropus | Common Moorhen | SC | (PS) | 1932 |
| Bird | Gavia immer | Common Loon | SC | 1985 | |
| Bird | Haliaeetus leucocephalus | Bald Eagle | E | (PS:LT,PDL) | 1999 |
| Bird | Ixobrychus exilis | Least Bittern | E | 1991 | |
| Bird | Oporornis philadelphia | Mourning Warbler | SC | 1997 | |
| Bird | Podilymbus podiceps | Pied-Billed Grebe | E | 1956 | |
| Bird | Pooecetes gramineus | Vesper Sparrow | T | 1996 | |
| Bird | Tyto alba | Barn Owl | SC | 1981 | |
| Bird | Vermivora chrysoptera | Golden-Winged Warbler | E | 1970 | |
| Mammal | Sorex palustris | Water Shrew | SC | 1997 | |
| Mammal | Synaptomys cooperi | Southern Bog Lemming | SC | 1992 | |
| Mussel | Alasmidonta heterodon | Dwarf Wedgemussel | E | LE | 2001 |
| Mussel | Alasmidonta undulata | Triangle Floater | SC | 2002 | |
| Mussel | Alasmidonta varicosa | Brook Floater (Swollen Wedgemussel) | E | 1997 | |
| Mussel | Ferrissia walkeri | Walker's Limpet | SC | 1974 | |
| Mussel | Lampsilis cariosa | Yellow Lampmussel | E | 2002 | |
| Mussel | Ligumia nasuta | Eastern Pondmussel | SC | 2001 | |
| Mussel | Strophitus undulatus | Creeper | SC | 2001 | |
| Crustacean | Eubranchipus intricatus | Intricate Fairy Shrimp | SC | 1975 | |
| Dragonfly/Damselfly | Aeshna mutata | Spatterdock Darner | E | 1996 | |
| Dragonfly/Damselfly | Boyeria grafiana | Ocellated Darner | SC | 1999 | |
| Dragonfly/Damselfly | Gomphus borealis | Beaverpond Clubtail | SC | 1991 | |
| Dragonfly/Damselfly | Gomphus descriptus | Harpoon Clubtail | E | 1996 | |
| Dragonfly/Damselfly | Gomphus fraternus | Midland Clubtail | E | 1991 | |
| Dragonfly/Damselfly | Gomphus ventricosus | Skillet Clubtail | SC | 1999 | |
| Dragonfly/Damselfly | Neurocordulia yamaskanensis | Stygian Shadowdragon | SC | 1999 | |
| Dragonfly/Damselfly | Ophiogomphus aspersus | Brook Snaketail | SC | 1998 | |
| Dragonfly/Damselfly | Ophiogomphus carolus | Riffle Snaketail | T | 1998 | |
| Dragonfly/Damselfly | Somatochlora elongata | Ski-Tailed Emerald | SC | 1998 | |
| Dragonfly/Damselfly | Stylurus amnicola | Riverine Clubtail | E | 1996 | |
| Dragonfly/Damselfly | Stylurus scudderi | Zebra Clubtail | E | 1997 | |
| Dragonfly/Damselfly | Stylurus spiniceps | A Clubtail Dragonfly | T | 1996 | |
| Beetle | Cicindela duodecimguttata | Twelve-Spotted Tiger Beetle | SC | 1997 | |
| Beetle | Cicindela purpurea | Purple Tiger Beetle | SC | 1941 | |
| Beetle | Desmocerus palliatus | Elderberry Long-Horned Beetle | SC | 1997 | |
| Butterfly/Moth | Apodrepanulatrix liberaria | New Jersey Tea Inchworm | E | 1934 | |
| Butterfly/Moth | Cicinnus melsheimeri | Melsheimer's Sack Bearer | T | 1934 | |
| Butterfly/Moth | Cingilia catenaria | Chain Dot Geometer | SC | 1977 | |
| Butterfly/Moth | Eacles imperialis | Imperial Moth | T | 1905 | |
| Butterfly/Moth | Papaipema sp 2 near pterisii | Ostrich Fern Borer Moth | SC | 1997 | |
| Butterfly/Moth | Pieris oleracea | Eastern Veined White | T | 1987 | |
| Butterfly/Moth | Rhodoecia aurantiago | A Noctuid Moth | T | 1999 | |
| Vascular Plant | Acer nigrum | Black Maple | SC | 1989 | |
| Vascular Plant | Adlumia fungosa | Climbing Fumitory | T | 1997 | |
| Vascular Plant | Alnus viridis ssp crispa | Mountain Alder | T | 1985 | |
| Vascular Plant | Amelanchier sanguinea | Roundleaf Shadbush | SC | 1926 | |
| Vascular Plant | Aplectrum hyemale | Putty-Root | E | 2001 | |
| Vascular Plant | Arabis laevigata | Smooth Rock-Cress | T | 1913 | |
| Vascular Plant | Arabis missouriensis | Green Rock-Cress | T | 2000 | |
| Vascular Plant | Arceuthobium pusillum | Dwarf Mistletoe | SC | 1987 | |
| Vascular Plant | Arisaema dracontium | Green Dragon | T | 1999 | |
| Vascular Plant | Aristida purpurascens | Purple Needlegrass | T | 1913 | |
| Vascular Plant | Artemisia campestris ssp borealis | Boreal Wormwood | E | (PS) | 1934 |
| Vascular Plant | Asclepias purpurascens | Purple Milkweed | E | 1875 | |
| Vascular Plant | Asclepias verticillata | Linear-Leaved Milkweed | T | 2001 | |
| Vascular Plant | Blephilia ciliata | Downy Wood-Mint | E | 1891 | |
| Vascular Plant | Blephilia hirsuta | Hairy Wood-Mint | E | 1913 | |
| Vascular Plant | Bolboschoenus fluviatilis | River Bulrush | SC | 1913 | |
| Vascular Plant | Calystegia spithamaea | Low Bindweed | E | 1977 | |
| Vascular Plant | Cardamine longii | Long's Bitter-Cress | E | 1925 | |
| Vascular Plant | Carex alopecoidea | Foxtail Sedge | T | 1997 | |
| Vascular Plant | Carex backii | Back's Sedge | E | 2001 | |
| Vascular Plant | Carex bushii | Bush's Sedge | E | 1999 | |
| Vascular Plant | Carex glaucodea | Glaucescent Sedge | E | 2000 | |
| Vascular Plant | Carex grayi | Gray's Sedge | T | 1999 | |
| Vascular Plant | Carex hitchcockiana | Hitchcock's Sedge | SC | 1998 | |
| Vascular Plant | Carex lupuliformis | E | 2001 | ||
| Vascular Plant | Carex michauxiana | Michaux's Sedge | E | 1994 | |
| Vascular Plant | Carex pauciflora | Few-Flowered Sedge | E | ||
| Vascular Plant | Carex tuckermanii | Tuckerman's Sedge | E | 1950 | |
| Vascular Plant | Carex typhina | Cat-Tail Sedge | T | 2000 | |
| Vascular Plant | Cerastium nutans | Nodding Chickweed | E | 1914 | |
| Vascular Plant | Cimicifuga racemosa | Black Cohosh | E | 1973 | |
| Vascular Plant | Claytonia virginica | Narrow-Leaved Spring Beauty | E | 1999 | |
| Vascular Plant | Clematis occidentalis | Purple Clematis | SC | 2000 | |
| Vascular Plant | Corallorhiza odontorhiza | Autumn Coralroot | SC | 2000 | |
| Vascular Plant | Crassula aquatica | Pygmyweed | T | 1985 | |
| Vascular Plant | Deschampsia cespitosa ssp glauca | Tufted Hairgrass | E | 1991 | |
| Vascular Plant | Elatine americana | American Waterwort | E | 2000 | |
| Vascular Plant | Eleocharis diandra | Wright's Spike-Rush | E | 2000 | |
| Vascular Plant | Eleocharis intermedia | Intermediate Spike-Sedge | T | 1984 | |
| Vascular Plant | Eleocharis obtusa var ovata | Ovate Spike-Sedge | E | 1899 | |
| Vascular Plant | Elymus villosus | Hairy Wild Rye | E | 1979 | |
| Vascular Plant | Equisetum scirpoides | Dwarf Scouring-Rush | SC | 1995 | |
| Vascular Plant | Eragrostis frankii | Frank's Lovegrass | SC | 1987 | |
| Vascular Plant | Eriophorum gracile | Slender Cottongrass | T | 1923 | |
| Vascular Plant | Goodyera repens | Dwarf Rattlesnake-Plantain | E | 1927 | |
| Vascular Plant | Halenia deflexa | Spurred Gentian | E | 1984 | |
| Vascular Plant | Huperzia selago | Mountain Firmoss | E | 1995 | |
| Vascular Plant | Hypericum ascyron | Giant St. John's-Wort | E | 1974 | |
| Vascular Plant | Juncus filiformis | Thread Rush | E | 1865 | |
| Vascular Plant | Liatris borealis | New England Blazing Star | SC | 2000 | |
| Vascular Plant | Listera cordata | Heartleaf Twayblade | E | 1913 | |
| Vascular Plant | Ludwigia polycarpa | Many-Fruited False-Loosestrife | E | 1999 | |
| Vascular Plant | Lygodium palmatum | Climbing Fern | SC | 2000 | |
| Vascular Plant | Malaxis brachypoda | White Adder's-Mouth | E | 1881 | |
| Vascular Plant | Milium effusum | Woodland Millet | T | 1996 | |
| Vascular Plant | Mimulus alatus | Winged Monkey-Flower | E | 2000 | |
| Vascular Plant | Mimulus moschatus | Muskflower | E | 1999 | |
| Vascular Plant | Minuartia michauxii | Michaux's Sandwort | T | 1903 | |
| Vascular Plant | Moehringia macrophylla | Large-Leaved Sandwort | E | 1994 | |
| Vascular Plant | Morus rubra | Red Mulberry | E | 2000 | |
| Vascular Plant | Nuphar microphylla | Tiny Cow-Lily | E | 1871 | |
| Vascular Plant | Ophioglossum pusillum | Adder's-Tongue Fern | T | 1997 | |
| Vascular Plant | Oxalis violacea | Violet Wood-Sorrel | E | 1999 | |
| Vascular Plant | Panicum philadelphicum | Philadelphia Panic-Grass | SC | 1997 | |
| Vascular Plant | Pedicularis lanceolata | Swamp Lousewort | E | 1994 | |
| Vascular Plant | Penstemon hirsutus | Hairy Beardtongue | E | ||
| Vascular Plant | Petasites frigidus var palmatus | Sweet Coltsfoot | E | 1911 | |
| Vascular Plant | Platanthera dilatata | Leafy White Orchis | T | 1885 | |
| Vascular Plant | Platanthera flava var herbiola | Pale Green Orchis | T | 1984 | |
| Vascular Plant | Poa languida | Drooping Speargrass | E | 2000 | |
| Vascular Plant | Podostemum ceratophyllum | Threadfoot | SC | 2001 | |
| Vascular Plant | Populus heterophylla | E | 1999 | ||
| Vascular Plant | Prenanthes serpentaria | Lion's Foot | E | 1875 | |
| Vascular Plant | Prunus pumila var depressa | Sandbar Cherry | T | 1985 | |
| Vascular Plant | Quercus macrocarpa | Mossy-Cup Oak | SC | 1986 | |
| Vascular Plant | Ranunculus pensylvanicus | Bristly Buttercup | T | 1925 | |
| Vascular Plant | Rumex verticillatus | Swamp Dock | T | 1998 | |
| Vascular Plant | Salix exigua | Sandbar Willow | T | 1990 | |
| Vascular Plant | Sanicula odorata | Long-Styled Sanicle | T | 1903 | |
| Vascular Plant | Scheuchzeria palustris | Pod-Grass | E | 1995 | |
| Vascular Plant | Scleria triglomerata | Tall Nut-Sedge | E | 1829 | |
| Vascular Plant | Senna hebecarpa | Wild Senna | E | 1999 | |
| Vascular Plant | Solidago macrophylla | Large-Leaved Goldenrod | T | 1942 | |
| Vascular Plant | Solidago ptarmicoides | Upland White Aster | E | 1997 | |
| Vascular Plant | Sphenopholis nitida | Shining Wedgegrass | T | 2001 | |
| Vascular Plant | Spiranthes romanzoffiana | Hooded Ladies'-Tresses | E | 1994 | |
| Vascular Plant | Symphyotrichum prenanthoides | Crooked-Stem Aster | T | 1933 | |
| Vascular Plant | Trichostema brachiatum | False Pennyroyal | E | 1904 | |
| Vascular Plant | Trisetum triflorum ssp molle | Spiked False Oats | E | 1990 | |
| Vascular Plant | Verbena simplex | Narrow-Leaved Vervain | E | 2000 | |
| Vascular Plant | Veronicastrum virginicum | Culver's-Root | T | 1998 | |
| Vascular Plant | Viola nephrophylla | Northern Bog Violet | E | 1929 | |
| Vascular Plant | Waldsteinia fragarioides | Barren Strawberry | SC | 1997 |