Helianthus is a genus comprising about 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. Except for three South American species, the species of Helianthus are native to North America and Central America. The best-known species is the common sunflower, whose round flower heads in combination with the ligules look like the Sun. This and other species, notably Jerusalem artichoke, are cultivated in temperate regions and some tropical regions as food crops for humans, cattle, and poultry, and as ornamental plants. The species H. annuus typically grows during the summer and into early fall, with the peak growth season being mid-summer.
Boltonia asteroides, the white doll's daisy, false chamomile, or false aster, is a species of plant native to the United States and Canada. It is found primarily in the Mississippi Valley and Great Plains from Saskatchewan south to Texas and Florida, with isolated populations in the eastern United States. Reports of the species in New England, New York, and the Pacific Northwest appear to be introductions.
Boltonia diffusa, the smallhead doll's daisy, is a North American species of plants in the family Asteraceae. It native to the United States, primarily the states along the Gulf of Mexico from Texas to Florida plus the lower Mississippi Valley from Louisiana to Illinois. There additional populations in the eastern United States as far north as Virginia.
Berlandiera is a genus of flowering plants in the aster family, Asteraceae.
Chaetopappa is a genus of plants in the family Asteraceae which are known generally as leastdaisies.
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.
Helenium amarum is a species of annual herb in the daisy family known by the common names yellowdicks, yellow sneezeweed, fiveleaf sneezeweed, and bitter sneezeweed. It is native to much of the south-central United States and northern Mexico, and it is present elsewhere in North America, Australia, and the West Indies as an introduced species.
Houstonia longifolia, commonly known as long-leaved bluet or longleaf summer bluet, is a perennial plant in the family Rubiaceae. It can be found throughout most of the Eastern United States and Canada. It has been reported from every state east of the Mississippi River except Delaware, plus North Dakota, Minnesota, Missouri, Arkansas and Oklahoma, with isolated populations in Kansas and Texas. Also, all Canadian provinces from Quebec to Alberta. It prefers upland woods in poor, dry, often sandy soil, blooming from June to August.
Chaetopappa ericoides is a species of flowering plant in the family Asteraceae known by the common names rose heath and heath-leaved chaetopappa. It is native to the southwestern and western Great Plains regions of the United States, plus northern Mexico. It is found in California, Nevada, Arizona, Utah, New Mexico, Colorado, Wyoming, Texas, Oklahoma, Kansas, Nebraska, Chihuahua, Coahuila, Sonora, Durango, Zacatecas, San Luis Potosí, and Nuevo León.
Salix geyeriana is a species of willow known by the common names Geyer's willow, Geyer willow and silver willow. The type specimen was collected by the botanist Karl Andreas Geyer, for whom it was named. Its conspicuous, yellow flowers begin to bloom as early as March, to as late as the end of June.
Chaetopappa hersheyi is a rare perennial plant species of plant called Hershey's cliff daisy, in the sunflower family. The epithet "hersheyi" honors the plant's discoverer, Alfred Hershey who collected it in 1944. It was formally described by Sidney Fay Blake in 1946.
Chaetopappa bellidifolia , called the Edwards lazy daisy, or whiteray leastdaisy, is a North American species of plants in the family Asteraceae. It has been found only in central Texas, largely in the Edwards Plateau.
Chaetopappa bellioides, called the pretty lazy daisy, or manyflower leastdaisy, is a North American species of plants in the family Asteraceae. It native to northern Mexico and to the Rio Grande Valley in western and southern Texas.
Chaetopappa imberbis, called the awnless lazy daisy, or awnless leastdaisy, is a North American species of plants in the family Asteraceae. It has been found only in south-central Texas.
Chaetopappa parryi, called the Parry's lazy daisy, or Parry's leastdaisy, is a North American species of plants in the family Asteraceae. It is native to northeastern Mexico and to the Big Bend region of western Texas.
Erigeron bellidiastrum, the western daisy fleabane or sand fleabane, is a species of fleabane in the family Asteraceae. It is native to northern Mexico and the western and central United States.
Lactuca ludoviciana, the biannual lettuce, is a North American species of wild lettuce. It is widespread across much of central and western Canada and the western and central United States from Ontario west to British Columbia and south to Louisiana, Texas, and California. Most of the known populations are on the Great Plains; populations west of there may well represent naturalizations.
Hymenopappus artemisiifolius, the oldplainsman, is a North American species of flowering plant in the daisy family. It has been found only in the south-central United States, in Texas, Arkansas, and Louisiana. Its natural habitat is in sandy soils of prairies and open woodlands.
Hymenopappus scabiosaeus, the Carolina woollywhite, is a North American species of flowering plant in the daisy family. It grows in the central and southeastern United States, primarily on the Great Plains an on the Coastal Plain of the Southeast. There are also isolated populations in Illinois and Indiana as well as in the state of Coahuila in northern Mexico.
Symphyotrichum divaricatum is an annual and herbaceous plant commonly known as southern annual saltmarsh aster. It is native to the southern United States and some northern states of Mexico.
