Thuja is a genus of coniferous trees in the Cupressaceae. There are five species in the genus, two native to North America and three native to eastern Asia. The genus is monophyletic and sister to Thujopsis. Members are commonly known as arborvitaes, thujas or cedars.
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus Carex with over 2,000 species.
Cladium is a genus of large sedges, with a nearly worldwide distribution in tropical and temperate regions. These are plants characterized by long, narrow (grass-like) leaves having sharp, often serrated (sawtooth-like) margins, and flowering stems 1–3 m tall bearing a much-branched inflorescence. Like many plants found in wet habitats, it has deeply buried rhizomes that can produce tall shoots with dense canopies.
Allium ampeloprasum is a member of the onion genus Allium. The wild plant is commonly known as wild leek or broadleaf wild leek. Its native range is southern Europe to western Asia, but it is cultivated in many other places and has become naturalized in many countries.
Clintonia borealis is a species of flowering plant in the lily family Liliaceae. The specific epithet borealis means "of the north," which alludes to the fact that the species tends to thrive in the boreal forests of eastern Canada and northeastern United States.
Corallorhiza trifida, commonly known as early coralroot, northern coralroot, or yellow coralroot, is a coralroot orchid native to North America and Eurasia, with a circumboreal distribution. The species has been reported from the United States, Canada, Russia, China, Japan, Korea, India, Nepal, Kashmir, Greenland, Pakistan, and almost every country in Europe.
Hypoxis decumbens is a species of plant in the Hypoxidaceae, considered by some authors to be included within the Liliaceae or Amaryllidaceae. The species is widespread across South America, Central America, Mexico, and the West Indies.
Allium cernuum, known as nodding onion or lady's leek, is a perennial plant in the genus Allium. It grows in dry woods, rock outcroppings, and prairies. It has been reported from much of the United States, Canada and Mexico including in the Appalachian Mountains from Alabama to New York State, the Great Lakes Region, the Ohio and Tennessee River Valleys, the Ozarks of Arkansas and Missouri, and the Rocky and Cascade Mountains of the West, from Mexico to Washington. It has not been reported from California, Nevada, Florida, Louisiana, Mississippi, New Jersey, Delaware, New England, or much of the Great Plains. In Canada, it grows from Ontario to British Columbia.
Allium acuminatum, also known as the tapertip onion or Hooker's onion, is a species in the genus Allium native to North America.
Goodyera oblongifolia is a species of orchid known by the common names western rattlesnake plantain and giant rattlesnake plantain. It is native to much of North America, particularly in the mountains of the western United States and Canada, from Alaska to northern Mexico, as well as in the Great Lakes region, Maine, Quebec and the Canadian Maritime Provinces.
Paronychia argyrocoma, the silvery nailwort, is a plant species native to the eastern United States. It has a disjunct distribution, found in New England and the Appalachian Mountains of the Southeast but not from New York, New Jersey or Pennsylvania in between. The species grows on rocky sites at elevations of 200–1800 m.
Juncus megacephalus, the bighead rush, is a plant species native to the United States. It is known from every seacoast state from Texas to Maryland, as well as Massachusetts, growing in freshwater marshes, sand dunes, and disturbed sites at elevations less than 100 m.
Eleocharis tuberculosa, the cone-cup spikerush, is a plant species native to the United States and Canada. It has been reported from every state on the Gulf and Atlantic coasts from Maine to Texas, plus Kentucky, Tennessee, Arkansas and Nova Scotia. It is found in wet soil in meadows, woodlands, lake shores and river banks.
Iris prismatica, the slender blue flag or cubeseed iris, is a plant species native to parts of the southern and eastern United States from Maine south to Alabama, as well as to the Canadian provinces of Ontario and Nova Scotia.
Aletris farinosa, called the unicorn root, true unicorn, crow-corn, white colic-root or white stargrass, is a plant species found across much of the eastern United States. It has also been reported from the southern part of Ontario, Canada. It is known from every state east of the Mississippi River except Vermont, as well as Texas, Oklahoma, Arkansas and Louisiana.
Sagittaria ambigua, the Kansas arrowhead, is an aquatic plant species native to the central United States. It grows in wet areas, mostly along the shores of ponds and waterways.
Galium concinnum, the shining bedstraw, is a plant species in the Rubiaceae. It is native to the Midwestern United States and central Canada, especially the Great Lakes Region and the Valleys of the Ohio, lower Missouri, and upper Mississippi Rivers. The range extends from eastern Oklahoma to eastern Nebraska, north to Ontario and east to Virginia and New York.
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.
Peltophyllum is a genus of myco-heterotrophic plants in family Triuridaceae, native to southern South America. It contains the following species:
Nuphar sagittifolia, common name arrow-leaved water-lily or Cape Fear spatterdock, is a plant species known only from North Carolina, South Carolina, and Virginia. It is aquatic, found in lakes, ponds, and slow-moving rivers in the coastal plains of those states. It is also sold in pet shops as greenery to grow in aquaria and water-gardens.
