Bidens frondosa is a North American species of flowering plant in the aster family, Asteraceae. It is widespread across much of Canada, the United States, and Mexico It is known in many other parts of the world as an introduced species, including Europe, Asia, Morocco, and New Zealand. Its many common names include devil's beggarticks, devil's-pitchfork, devil's bootjack, sticktights, bur marigold, pitchfork weed, tickseed sunflower, leafy beggarticks, and common beggar-ticks.
Arnica spathulata is a rare North American species of flowering plant in the family Asteraceae, known by the common name Klamath arnica. It is native to the Klamath Mountains of northwestern California and southwestern Oregon. It grows in woodland habitat, almost exclusively on serpentine soils.
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.
Eriophyllum jepsonii is a rare North American species of flowering plant in the family Asteraceae known by the common name Jepson's woolly sunflower. It is endemic to California, where it has been found in the Central Coast Ranges and adjacent hills from Contra Costa County to Ventura County.
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. It grows in wet meadows and abandoned fields.
Bidens amplissima, also known as the Vancouver Island beggarticks, is an annual wetland species in the Asteraceae family which displays a broad range of morphological variation and has a geographic range restricted to southwestern British Columbia and adjacent Washington State. Due to its limited global range and susceptibility to anthropogenic threats, B. amplissima is federally listed as Special Concern under Canada's Species at Risk Act and is blue-listed in British Columbia. Bidens amplissima shares a variety of morphological characteristics with two closely related species, B. cernua and B. tripartita, making identification challenging. Accurate identification also often depends on multiple morphological characters such as leaf shape, ray florets and achene shape.
Bidens aurea , the Arizona beggarticks, is a North American species of flowering plant in the family Asteraceae. It is widespread across much of Mexico and found also in Arizona and Guatemala. The species is also naturalized in parts of Europe and South America.
Bidens bigelovii is a North American species of flowering plant in the family Asteraceae. It is native to the southwestern and south-central United States and to Mexico as far south as Oaxaca.
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 heterodoxa, the Connecticut beggarticks, is a North American species of flowering plant in the family Asteraceae. It is native to eastern Canada and the northeastern United States (Connecticut).
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.
Bidens lemmonii is a North American species of flowering plant in the family Asteraceae. It is native to the southwestern United States and Mexico.
Bidens mitis, the smallfruit beggarticks, is a North American species of flowering plant in the family Asteraceae. It is native to the eastern, southeastern, and south-central parts of the United States, from eastern Texas to southern New Jersey.
Bidens tenuisecta , the slim lobe beggarticks, is a North American species of flowering plant in the family Asteraceae. It is native to northern Mexico (Chihuahua) and the western United States. There are also reports of populations in the northeastern United States but these are almost assuredly introductions.
Erigeron elatior is a North American species of flowering plants in the family Asteraceae known by the common name tall fleabane.
Erigeron elatus is a North American species of flowering plants in the family Asteraceae known by the common names swamp fleabane and swamp boreal-daisy.
Erigeron purpuratus is a North American species of flowering plant in the family Asteraceae known by the common name purple fleabane. The species grows in Alaska and Yukon.
Erigeron vreelandii is a North American species of flowering plant in the family Asteraceae known by the common names sticky tall fleabane and Vreeland's erigeron. It grows in northwestern Mexico and in the southwestern United States.
Hieracium traillii is a species of hawkweed known by the common name Maryland hawkweed.
