Ptelea trifoliata, commonly known as common hoptree, wafer ash, stinking ash, and skunk bush, is a species of flowering plant in the citrus family (Rutaceae). It is native to North America, where it is found in Canada, Mexico, and the United States. It is a deciduous shrub or tree, with alternate, trifoliate leaves.
Rhinanthus minor, known as yellow rattle, is a herbaceous wildflower in the genus Rhinanthus in the family Orobanchaceae. It has circumpolar distribution in Europe, Russia, western Asia, and northern North America. An annual plant, yellow rattle grows up to 10–50 centimetres (3.9–19.7 in) tall, with upright stems and opposite, simple leaves. The fruit is a dry capsule, with loose, rattling seeds.
Orobanchaceae, the broomrapes, is a family of mostly parasitic plants of the order Lamiales, with about 90 genera and more than 2000 species. Many of these genera were formerly included in the family Scrophulariaceae sensu lato. With its new circumscription, Orobanchaceae forms a distinct, monophyletic family. From a phylogenetic perspective, it is defined as the largest crown clade containing Orobanche major and relatives, but neither Paulownia tomentosa nor Phryma leptostachya nor Mazus japonicus.
Collinsonia canadensis, commonly called richweed or stoneroot, is a perennial herb in the mint family.
Echinacea angustifolia, the narrow-leaved purple coneflower or blacksamson echinacea, is a species of flowering plant in the family Asteraceae. It is native to North America, where it is widespread across much of the Great Plains of central Canada and the central United States, with additional populations in surrounding regions.
Pedicularis is a genus of perennial green root parasite plants currently placed in the family Orobanchaceae.
Pedicularis densiflora, known commonly as Indian warrior or warrior's plume, is a plant in the family Orobanchaceae.
Viola canadensis is a flowering plant in the Violaceae family. It is commonly known as Canadian white violet, Canada violet, tall white violet, or white violet. It is widespread across much of Canada and the United States, from Alaska to Newfoundland, south as far as Georgia and Arizona. It is a perennial herb and the Latin specific epithet canadensis means of Canada.
Liatris aspera is a perennial wildflower in the Asteraceae family that is found in central to eastern North America in habitats that range from mesic to dry prairie and dry savanna.
Melampyrum lineare, commonly called the narrowleaf cow wheat, is an herbaceous plant in the family Orobanchaceae. It is native to North America, where it is found in southern Canada and the northern United States, with an extension south in the Appalachian Mountains. It has a wide habitat tolerance, but is usually found in drier and somewhat exposed woodlands.
Apocynum androsaemifolium, the fly-trap dogbane or spreading dogbane, is a flowering plant in the Gentianales order. It is common in North America.
Gentiana andrewsii, the bottle gentian, closed gentian, or closed bottle gentian, is an herbaceous species of flowering plant in the gentian family Gentianaceae. Gentiana andrewsii is native to northeastern North America, from the Dakotas to the East Coast and through eastern Canada.
Mitella diphylla is a clump forming, open woodland plant native to northeast and midwest regions of North America.
Liatris pycnostachya, the prairie blazing star, cattail gayfeather or cattail blazing star, is a perennial plant in the Asteraceae family that is native to the tallgrass prairies of the central United States.
Jeffersonia, also known as twinleaf or rheumatism root, is a small genus of herbaceous perennial plants in the family Berberidaceae. They are uncommon spring wildflowers and grow in limestone soils of rich deciduous forests. Jeffersonia was named for United States President Thomas Jefferson by his contemporary Benjamin Smith Barton. This genus was formerly grouped in genus Podophyllum. Twinleaf is protected by state laws as a threatened or endangered plant in Georgia, Iowa, New York, and New Jersey.
Pedicularis groenlandica is a showy flowering plant in the family Orobanchaceae which is known by the common names elephant's head, elephant-head lousewort and butterfly tongue.
Castilleja sessiliflora is a species of flowering plant in the family Orobanchaceae known by the common names downy Indian paintbrush and downy paintedcup. It is native to the Great Plains of North America from southern Canada, through the central United States, to northern Mexico. It occurs as far west as the eastern slopes of the Rocky Mountains.
Castilleja kerryana is a species of flowering plant in the family Orobanchaceae. It is commonly known as Kerry's Indian paintbrush or Kerry’spaintbrush. It was formally described in 2013 and so far it is known only from a small population in the state of Montana, in the Northwestern United States.
Aureolaria pedicularia, the fernleaf yellow false foxglove, fern-leaved false foxglove, or fernleaf false foxglove, is a parasitic plant of the family Orobanchaceae. Aureolaria pedicularia is native to parts of the eastern US, the Midwest, and adjacent Canada. This plant is known for its distinct leaf shape and overall plant size. The common names for Aureolaria pedicularia come from its fern-like leaves.
Aureolaria levigata, commonly known as entireleaf yellow false foxglove or Appalachian oak-leech, is a species of flowering plant in the family Orobanchaceae. It is native to much of the Appalachian Mountains and surrounding areas in the eastern United States. It is also found in a disjunct population in southwestern Mississippi.
