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. 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.
Bahiopsis parishii known commonly as Parish goldeneye or shrubby goldeneye, is a North American species of flowering shrubs in the family Asteraceae.
Dicoria canescens is a North American flowering plant in the family Asteraceae known by several common names including desert twinbugs and bugseed. This is a desert plant of the southwestern United States and northwestern Mexico, found in Sonora, Baja California, southern California, Nevada, Arizona, Utah, southwestern Colorado, and northwestern New Mexico.
Cirsium neomexicanum is a North American species of thistle known by the common names New Mexico thistle, powderpuff thistle, lavender thistle, foss thistle and desert thistle.
Encelia virginensis is a North American species of flowering plants in the family Asteraceae known by the common name Virgin River brittlebush. This shrub is native to the southwestern United States and northwestern Mexico, particularly the Mojave Desert and the Sonoran Desert. It has been found in Baja California, southern California, Nevada, Arizona, southwestern Utah, and southwestern New Mexico.
Heliomeris is a genus of flowering plants in the family Asteraceae known generally as false goldeneyes.
Hymenoxys cooperi is a species of flowering plant in the daisy family known by the common name Cooper's rubberweed. It is native to the southwestern United States and Great Basin, where it grows in rocky soils in arid regions from southern California to New Mexico, north as far as Idaho and Oregon.
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.
Bidens lemmonii is a North American species of flowering plant in the family Asteraceae. It is native to the southwestern United States and Mexico.
Brickellia coulteri, or Coulter's brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to Mexico and the southwestern United States.
Haploesthes greggii, common name false broomweed, is a North American species of flowering plants in the family Asteraceae. It grows in northeastern Mexico and in the south-central and southwestern United States.
Hedypnois rhagadioloides, the Cretanweed or scaly hawkbit, is a species of plant in the tribe Cichorieae within the family Asteraceae. It is native to the Mediterranean Region and neighboring areas from Canary Islands to Iran, and naturalized in Australia and in parts of the Americas.
Helianthella microcephala, common name purpledisk helianthella, is a North American plant species in the family Asteraceae. It grows in the southwestern United States, in the states of Arizona, New Mexico, Colorado, and Utah.
Heliomeris soliceps is a rare North American species of flowering plants in the family Asteraceae called the tropical false goldeneye or paria sunflower. It has been found only in the state of Utah in the southwestern United States. It has a very restricted range in only one county in the southern part of the state, although it forms large, extensive populations within that small region.
Heliomeris longifolia is a North American species of flowering plants in the family Asteraceae called the longleaf false goldeneye. It is widespread across much of Mexico from Chihuahua and Sonora south to Chiapas, and found also in the southwestern United States from Nevada to western Texas.
Heliomeris multiflora is a North American species of flowering plants in the family Asteraceae called the showy goldeneye. It grows in Mexico and the western United States from Montana to Jalisco.
Heliomeris obscura is a rare Mexican species of flowering plants in the family Asteraceae. It has been found only in a remote area of dry shrublands in eastern Mexico, in the states of Puebla and Veracruz.
Hymenopappus flavescens, the collegeflower, is a North American species of flowering plant in the daisy family.
Hymenothrix wrightii is a North American species of flowering plant in the daisy family. It grows in northwestern Mexico and the southwestern United States.
Hymenoxys rusbyi is a North American species of flowering plant in the daisy family known by the common names Rusby's rubberweed or Rusby's bitterweed. It has been found only in the states of Arizona and New Mexico in the southwestern United States.
