Bidens is a genus of flowering plants in the aster family, Asteraceae. The common names beggarticks, black jack, burr marigolds, cobbler's pegs, Spanish needles, stickseeds, tickseeds and tickseed sunflowers refer to the fruits of the plants, most of which are bristly and barbed, with two sharp pappi at the end. The generic name refers to the same character; Bidens comes from the Latin bis ("two") and dens ("tooth").
Cirsium discolor, the field thistle, is a North American species of plants in the thistle tribe, within the sunflower family. It is native to thirty-three states in the United States as well four Canadian provinces. It occurs across much of eastern and central Canada as well as eastern and central United States. It has been found from New Brunswick west to Saskatchewan and south as far as Texas and Georgia.
Helianthus grosseserratus, commonly known as sawtooth sunflower or thick-tooth sunflower, is a perennial sunflower in the family Asteraceae, with a large flowering head (inflorescence).
Balsamorhiza sagittata is a North American species of flowering plant in the sunflower tribe of the aster family known by the common name Arrowleaf Balsamroot. It is widespread across western Canada and much of the western United States. A specimen was collected by explorer and botanist Meriwether Lewis near Lewis and Clark Pass in 1806.
Bidens laevis is a species of flowering plant in the daisy family known by the common names larger bur-marigold and smooth beggarticks. It is native to South America, Mexico, and the southern and eastern United States. It grows in wetlands, including estuaries and riverbanks.
Bidens vulgata is a species of flowering plant in the family Asteraceae known by the common names big devils beggarticks and tall beggarticks. It is native to eastern and central North America from Nova Scotia to northern Georgia and as far west as the Rocky Mountains. It is an introduced species on the West Coast of North America as well as parts of Europe.
Bidens aristosa is a North American species of plants in the sunflower family. Common names include bearded beggarticks, western tickseed, long-bracted beggarticks, tickseed beggarticks, swamp marigold, and Yankee lice. It is native to eastern and central United States and south-central Canada, from Maine south to Florida and west as far as Ontario, Texas, and Nebraska.
Solidago houghtonii is a rare North American species of flowering plant in the aster family known as Houghton's goldenrod. It is native to southern Ontario, Canada and the northern United States. It is threatened by the loss and degradation of its habitat. It is a federally listed threatened species of the United States and it is designated a species of special concern by Canada's Committee on the Status of Endangered Wildlife in Canada.
Helianthus decapetalus, known by the common names thinleaf sunflower and thin-leaved sunflower, is a perennial forb in the sunflower family. It is native to the Eastern and Central United States and Canada, from New Brunswick west to Iowa, Wisconsin, and Ontario, south as far as Georgia and Louisiana. It produces yellow composite flowers in late summer or early fall.
Solidago puberula, the downy goldenrod, is a plant species native to eastern North America from Nova Scotia and Ontario south to Florida and Louisiana. Two subspecies are commonly recognized:
Smilax pseudochina is a perennial herb in the greenbriar family. It is commonly called bamboo vine or false chinaroot. Its range extends up the Atlantic Coast of the United States, from Long Island in New York State south to Georgia.
Bidens bidentoides is an uncommon North American species of flowering plant in the family Asteraceae. It is native to the northeastern and east-central parts of the United States, the coastal plain of the States of Maryland, Delaware, Pennsylvania, and New Jersey plus the region around the Hudson River estuary in New York. Common name is Delmarva beggar-ticks, in reference to the Delmarva Peninsula in Delaware, eastern Maryland, and eastern Virginia.
Bidens connata , the purplestem beggarticks or London bur-marigold, is a species of flowering plant in the family Asteraceae. It is widespread across much of Eurasia, North Africa, and North America, and naturalized in Australia and on certain Pacific Islands.
Bidens discoidea, the small beggarticks, is a North American species of flowering plant in the family Asteraceae. It is widespread across eastern Canada and the eastern and central United States, from Nova Scotia west to Minnesota, south to Florida and Texas.
Bidens hyperborea is a coastal species of flowering plant in the family Asteraceae. It grows along the coasts of Hudson Bay, the Arctic Ocean, and the North Atlantic Ocean in eastern Canada and the northeastern United States.
Erechtites valerianifolius, common name tropical burnweed is a New World species of plants in the sunflower family. It is native to Mexico, Central America, South America, and the West Indies. It is also naturalized as a weed in much of the tropical Old World.
Tagetes pusilla, the lesser marigold, is a Latin American species of marigolds in the family Asteraceae. It is native Central America and western South America from Guatemala to northern Argentina.
Solidago latissimifolia, common name Elliott's goldenrod, is North American species of flowering plants in the sunflower family. It is native to the Atlantic Coast of the United States and Canada, from Nova Scotia south to Alabama and Florida.
Hieracium longipilum, the hairy hawkweed, is a North American plant species in the dandelion tribe within the sunflower family. It is widespread across much of central Canada and the central United States from Ontario south to Texas and Louisiana. There are old reports of the species growing in Québec, but apparently does not grow there now.
Lactuca hirsuta, the hairy lettuce, is a North American species of wild lettuce. It is widespread across much of central Canada and the eastern and central United States from Ontario, Québec, Prince Edward Island, and Nova Scotia south as far as Texas, Louisiana, and Florida.
