Callistephus is a monotypic genus of flowering plants in the aster family, Asteraceae, containing the single species Callistephus chinensis. Its common names include China aster and annual aster. It is native to China and Korea. and it is cultivated worldwide as an ornamental plant in cottage gardens and as a cut flower.
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.
Gaillardia pulchella is a North American species of short-lived perennial or annual flowering plants in the sunflower family.
Crepis capillaris, the smooth hawksbeard, is a species of flowering plant in the tribe Cichorieae within the family Asteraceae, and is native to Europe. It has become naturalized in other lands and is regarded as a weed in some places.
Calendula officinalis, the pot marigold, common marigold, ruddles, Mary's gold or Scotch marigold, is a flowering plant in the daisy family Asteraceae. It is probably native to southern Europe, though its long history of cultivation makes its precise origin unknown, and it may possibly be of garden origin. It is also widely naturalised farther north in Europe and elsewhere in warm temperate regions of the world.
Erigeron acer is a widespread herbaceous flowering plant in the family Asteraceae. Common names include bitter fleabane and blue fleabane. The species is native to Canada, colder parts of the United States, northern, central, and southeastern Asia, and most of Europe.
Buphthalmum salicifolium is a species of flowering plant in the aster family, Asteraceae. It is known by the common name ox-eye. It is native to Europe.
Euthamia graminifolia, the grass-leaved goldenrod or flat-top goldentop, is a North American species of plants in the family Asteraceae.
Erigeron strigosus is a species of flowering plant in the family Asteraceae known by the common names prairie fleabane, common eastern fleabane, and daisy fleabane.
Heteranthemis is a monotypic genus of plants in the daisy family containing the single species Heteranthemis viscidehirta, which is known by the common name oxeye, or sticky oxeye. This plant is native to the Iberian Peninsula and adjacent areas in North Africa, but it can be found in other parts of the world as an introduced species. This is an annual herb growing erect stems 20 to 80 centimeters tall. Its abundant leaves are a few centimeters long, wavy to curly and divided into irregular toothed lobes. The stem and foliage are glandular and produce a sticky exudate. The plants produce bright yellow daisylike flower heads, with bases covered in large green phyllaries. The center of the head is filled with many yellow disc florets and the edge is fringed with toothed yellow ray florets about 2 centimeters long.
Hypochaeris glabra is a species of flowering plant in the tribe Cichorieae within the family Asteraceae known by the common name smooth cat's ear. It is native to Europe, North Africa, and the Middle East but it can be found on other continents where it is an introduced species and a widespread weed. It has become widespread in Africa, southern and southeastern Asia, Australia, and parts of the Americas.
Leontodon saxatilis is a species of hawkbit known by the common names lesser hawkbit, rough hawkbit, and hairy hawkbit. It is native to Europe and North Africa but can be found in many other places across the globe as an introduced species and often a noxious weed. This is a dandelion-like herb growing patches of many erect, leafless stems from a basal rosette of leaves. The leaves are 2 to 15 centimeters long, 0.5 to 2.5 centimeters wide, entire or lobed, and green in color. Atop the stems are solitary flower heads which are ligulate, containing layered rings of ray florets with no disc florets. The florets are yellow with toothed tips. The fruit is a cylindrical achene with a pappus of scales. Fruits near the center of the flower head are rough, while those growing along the edges of the head are smooth.
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.
Calendula arvensis is a species of flowering plant in the daisy family known by the common name field marigold. It is native to central and southern Europe, and it is known across the globe as an introduced species.
Pulicaria paludosa is a species of flowering plant in the aster family known by the common name Spanish false fleabane. It is native to Europe, particularly Spain and Portugal, and it is known as an introduced species in California, Arizona, and Clark County, Nevada, where it grows as a weed on roadsides, wetlands, riparian corridors, and other damp, disturbed areas. It is an annual, biennial, or perennial herb growing a few centimeters tall to well over a meter tall from a rhizomatous root system. The leaves are alternately arranged with blades in a variety of shapes from linear to oblong or oval. The herbage is coated in soft hairs. The inflorescence bears many flower heads. Each head has narrow, pointed, hairy phyllaries, a large dense center of many yellow disc florets, and a short fringe of many rectangular yellow ray florets, which are only about 2 millimeters long each. The fruit is an achene tipped with a pappus of bristles.
Crepis tectorum, commonly referred to as the narrowleaf hawksbeard or narrow-leaved hawk's-beard, is an annual or winter annual plant between 30 and 100 centimetres in height. Originating in Siberia before being introduced to Canada in 1890, the narrowleaf hawksbeard's is an invasive species. Maintaining one branched, hairless and leafy stem during maturity, the narrowleaf hawksbeard has yellow leaves which are arranged in an alternate manner and less than 0.5 inches (13 mm) wide.
Zinnia peruviana, the Peruvian zinnia, is an annual flowering plant in the family Asteraceae. It is native to North America and South America.
Chrysanthemum × morifolium is a hybrid species of perennial plant in the genus Chrysanthemum of the Asteraceae family.
Crepis sibirica is an Asian and eastern European species of plants in the tribe Cichorieae within the family Asteraceae. It has been found in China, Mongolia, Russia, Central Asia, and eastern Europe.
Oedera capensis is a prickly shrublet belonging to the family Asteraceae. It has stems that branch only at the foot and are densely set over their entire length with narrowly triangular leathery leaves with a sharp tip at approximately right angles to the stem. At their tip are what at first sight appears to be a single flowerhead with yellow ray florets and yellow disc florets. In fact, these are mostly nine densely cropped heads, as is suggested by the nine domes of the "disc" of the composite head, the untidy arrangement of the ray florets, and becomes very clear when cutting through the composite head. It is an endemic of the south of the Western Cape province in South Africa.
