Silphium is a genus of North American plants in the tribe Heliantheae within the family Asteraceae.
Picris (oxtongues) is a genus of flowering plants in the family Asteraceae described as a genus by Linnaeus in 1753.
The Circaea, or enchanter's nightshades, are a genus of flowering plants in the evening primrose family Onagraceae. About two dozen taxa have been described, including eight species. Plants of the genus occur throughout the temperate and boreal forests of the Northern Hemisphere. Three taxa occur in North America: Circaea alpina, Circaea canadensis, and the hybrid Circaea × sterilis. The generic name Circaea refers to the enchantress Circe from Greek mythology who is said to have used the herb as a charm.
Triglochin is a plant genus in the family Juncaginaceae described by Carl Linnaeus in 1753. It is very nearly cosmopolitan in distribution, with species on every continent except Antarctica. North America has four accepted species, two of which can also be found in Europe: Triglochin palustris and Triglochin maritima. Australia has many more.
Eriophorum is a genus of flowering plants in the family Cyperaceae, the sedge family. They are found throughout the arctic, subarctic, and temperate portions of the Northern Hemisphere in acid bog habitats, being particularly abundant in Arctic tundra regions.
Cenchrus is a widespread genus of plants in the grass family. Its species are native to many countries in Asia, Africa, Australia, the Americas, and various oceanic islands.
Erigeron canadensis is an annual plant native throughout most of North America and Central America. It is also widely naturalized in Eurasia and Australia. Common names include horseweed, Canadian horseweed, Canadian fleabane, coltstail, marestail, and butterweed. It was the first weed to have developed glyphosate resistance, reported in 2001 from Delaware.
Sideroxylon is a genus of trees in the family Sapotaceae described as a genus by Linnaeus in 1753. They are collectively known as bully trees. The generic name is derived from the Greek words σιδηρος (sideros), meaning "iron", and ξύλον (xylon), meaning "wood."
Iva is a genus of wind-pollinated plants in the family Asteraceae, described as a genus by Linnaeus in 1753. Plants of this genus are known generally as marsh elders. The genus is native to North America.
Sigesbeckia is a genus of annual plants in the family Asteraceae. St. Paul's wort is a common name for some of the species. Sigesbeckia is widely distributed and has been traditionally used for the management of chronic diseases, including arthritis.
Arctium tomentosum, commonly known as the woolly burdock or downy burdock, is a species of burdock belonging to the family Asteraceae. The species was described by Philip Miller in 1768.
Tillandsia utriculata, commonly known as the spreading airplant or the giant airplant, is a species of bromeliad that is native to Florida and Georgia in the United States, the Caribbean, southern and eastern Mexico, Central America, and Venezuela.
Polymnia canadensis, commonly known as whiteflower leafcup, is a flowering perennial plant in the family Asteraceae. It is native to eastern North America from Ontario south to Alabama and from Kansas, Oklahoma, and Minnesota east to North Carolina, Vermont and Connecticut. It is considered endangered in the last two states. It is typically found in moist forests over calcareous rocks.
Spigelia is a genus of flowering plants in the family Loganiaceae. It contains around 60 species, distributed over the warmer parts of the Americas, from the latitude of Buenos Aires to the Southern United States. It was named after Adriaan van den Spiegel by Carl Linnaeus in his 1753 Species Plantarum; the type species is Spigelia anthelmia. Pinkroot is a common name for plants in this genus.
Smilax china is a climbing plant species in the genus Smilax. It is native to China, Korea, Taiwan, Japan, Philippines, Vietnam, Thailand, Myanmar, and India. It also known as china root, china-root, or chinaroot, as is the related Smilax glabra.
Rubus canadensis is a North American species of flowering plant in the rose family known by the common names smooth blackberry, Canadian blackberry, thornless blackberry and smooth highbush blackberry. It is native to central and eastern Canada and the eastern United States.
Sigesbeckia orientalis, commonly known as Indian weed or common St. Paul's wort, is a species of flowering plant in the family Asteraceae. It is a small, upright, sparsely branched shrub with yellow flowers and widespread in Asia, Africa and Australia.
Solidago bicolor, with several common names including white goldenrod, silverrod and verge d’or bicolore, is a plant species native to much of eastern North America. It is found in Canada and in the United States. It prefers sandy and rocky soils, and can frequently be found along roadsides.
Hypericum virginicum, the marsh St. Johns-wort or Virginia marsh St. Johnswort, is a species of flowering plant in the family Hypericaceae. It is native to the central and eastern United States and eastern Canada.
Polymnia johnbeckii, commonly called Beck's leafcup, is a species of flowering plant in the family of Asteraceae. It is a perennial forb found in a single state of the United States. It has white/yellow flowers.
