Arethusa bulbosa, commonly called dragon's mouth orchid, is the only species in the orchid genus Arethusa. The genus is named after a naiad of Greek mythology. This monotypic genus is abbreviated Aret in trade journals.
Corallorhiza maculata, or spotted coralroot, is a North American coralroot orchid. It has three varieties: C. maculata var. occidentalis, C. maculata var. maculata, and C. maculata var. mexicana. It is widespread through Mexico, Guatemala, Canada, St. Pierre & Miquelon, and much of the western and northern United States. It grows mostly in montane woodlands.
Calopogon tuberosus, the tuberous grass pink, is an orchid native to eastern North America.
Epipactis helleborine, the broad-leaved helleborine, is a terrestrial species of orchid with a broad distribution. It is a long lived herb which varies morphologically with ability to self-pollinate.
Malaxis, commonly called adder's mouth, is a genus of terrestrial and semiepiphytic orchids. The generic name signifies "smooth" and alludes to the tender texture of the leaves. There are approximately 182 species, found mostly in tropics but with some species in temperate regions.
Hammarbya paludosa is a small orchid commonly known as bog orchid, bog adder's-mouth or bog adder's-mouth orchid. It grows in bogs in temperate and subarctic regions of the Northern Hemisphere.
Epidendrum magnoliae, sometimes called Epidendrum conopseum or the green-fly orchid, is a species of orchid in the genus Epidendrum. It is the most northern-growing epiphytic orchid in North America, being found wild in the southeastern United States from Louisiana to North Carolina, and also in northeastern Mexico.
Malaxis monophyllos, the white adder's mouth, is a terrestrial species of orchid. It is widespread across much of Europe, Asia, and much of southern Canada. In the United States, it grows mostly in southern Alaska, New England and the Great Lakes region, with isolated populations reported from Colorado and California.
Platanthera huronensis, the Huron green orchid, is a species of orchid native to the United States and Canada. It has a discontinuous range, the eastern range including eastern Canada from eastern Manitoba to Labrador, plus New England and the Great Lakes states. The western range extends along the Rocky Mountains from New Mexico to Alberta, as well as the coastal ranges of Washington, British Columbia and southern Alaska.
Isotria is a genus of flowering plants from the orchid family, Orchidaceae.
Neottia bifolia, common name southern twayblade, is a species of terrestrial orchid found in eastern Canada and the eastern United States.
Platanthera flava, the palegreen orchid, is a species of pale-flowered orchid. It is native to eastern North America, from Texas east to Florida, north to Ontario, Quebec and Nova Scotia.
Corallorhiza odontorhiza, common name fall coral-root or small-flowered coral-root, is a species of orchid widespread across eastern and central United States, and reported also from Mexico, Central America, Quebec and Ontario. In North America, it occurs in forested areas up to an elevation of 2800 m.
Malaxis bayardii, or Bayard's adder's-mouth orchid, is a species of orchid native to northeastern North America. It is found from Massachusetts to North Carolina, with isolated populations in Ohio and Nova Scotia. There are historical reports of the plant formerly growing in Vermont and New Jersey, but it seems to have been extirpated in those two states It grows in dry, open woods and pine barrens at elevations of less than 600 m.
Cleistesiopsis divaricata, the rosebud orchid or small spreading pogonia, is a terrestrial species of orchid native to the eastern United States from New Jersey to Florida.
Liparis liliifolia, known as the brown widelip orchid, lily-leaved twayblade, large twayblade, and mauve sleekwort, is a species of orchid native to eastern Canada and the eastern United States. It can be found in a variety of habitats, such as forests, shrublands, thickets, woodlands, and mountains. The orchid is considered globally secure, but it is considered rare or endangered in many northeastern states.
Malaxis brachystachys is a North American species of orchid native to Mexico, Central America, and the southwestern United States (Arizona). It usually has only one leaf, though occasionally two. Flowers are small and green, in a flat-topped array.
Malaxis porphyrea, the Cochise adder's-mouth orchid, is a species of orchid native to northern Mexico and the southwestern United States. It is an herb up to 45 cm (18 in) tall with only one leaf below tiny purple flowers in an elongated cluster.
Malaxis macrostachya is a species of orchid widespread across much Mexico, Central America, and the southwestern United States. It has only one leaf per plant, along with a tall flower stalk with as many as 160 tiny, green flowers.
Spiranthes ovalis, commonly called the October lady's tresses, is a species of orchid that is native to eastern North America.
