| Helenium campestre | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Helenium |
| Species: | H. campestre |
| Binomial name | |
| Helenium campestre Small 1903 | |
Helenium campestre is a North American perennial plant in the sunflower family, commonly known as oldfield sneezeweed or arkansas sneezeweed. [1] It is native to the southeastern United States, in Arkansas and northwestern Louisiana. [2]
Helenium campestre is an perennial herb up to 100 cm (40 inches) tall. One plant can produce as many as 20 flower heads, in branching arrays. The head is spherical or egg-shaped, with sometimes as many as 700 disc florets, each floret yellow near the base but purple or brown towards the tip. There are also 9-15 yellow ray florets. The species grows in ditches, fields, and streambanks. [1]
The plant is often misidentified as Southern Sneezeweed ( Helenium flexuosum ) but it can be identified by the number of lobes on the disk florets. H. Campestre has 5 lobes, while H. flexusom has 4. The flowers on H. campestre are larger and droop more.
This species has a very limited distribution, occurring only in Arkansas and Louisiana. Within Louisiana, it has been documented in Bossier Parish and Webster Parish. [2]
Helenium is a genus of annuals and herbaceous perennial plants in the family Asteraceae, native to the Americas.
Packera obovata, commonly known as roundleaf ragwort, spoon-leaved ragwort, or roundleaf groundsel is an erect perennial herb in the Asteraceae (aster) family native to eastern North America. It was previously called Senecio obovatus. Basal and lower leaves are obovate with toothed margins, while upper leaves are pinnately divided. The ray flowers are yellow and the disk flowers orange-yellow, the inflorescences being held well above the foliage.
Helenium autumnale is a North American species of poisonous flowering plants in the family Asteraceae. Common names include common sneezeweed and large-flowered sneezeweed.
Helenium bigelovii is a North American perennial plant in the sunflower family, commonly known as Bigelow's sneezeweed. It grows in moist areas such as meadows, marshes, or streamsides. It is found at moderate and higher elevations (3000–10,000 ft) in the foothills and mountains of California and Oregon: Cascades, Coast Ranges, Klamath Mountains, Sierra Nevada, etc. Cultivars of the species are used in gardening as ornamentals.
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.
Helenium bolanderi is a North American species of flowering plant in the family Asteraceae known by the common name coastal sneezeweed. It is native to southern Oregon and northern California as far south as Mendocino County, primarily along the seacoast.
Helenium puberulum is a North American species of flowering plants in the daisy family known by the common name rosilla. It is native to California and Baja California, where it can be found in moist habitats such as riverbanks and meadows. It has also been found in Oregon, although these might possibly be naturalized populations.
Helenium virginicum is a rare species of flowering plant in the aster family known by the common name Virginia sneezeweed. It occurs in the United States, where it has a disjunct distribution; it is known only from Virginia and Missouri. It is limited to a specific type of habitat and it is threatened by modification of this habitat. It was federally listed as a threatened species of the United States in 1998.
Helenium flexuosum is a North American plant species in the daisy family known by the common name purple sneezeweed or southern sneezeweed. It is widespread across much of eastern and central United States and Canada, from Nova Scotia west to Ontario, Minnesota, and Kansas, south to Florida, Louisiana, and eastern Texas.
Balduina uniflora, commonly called oneflower honeycombhead, savannah honeycombhead or oneflower balduina, is a North American species of plants in the sunflower family. It is native to the southeastern United States. It is the type species of the genus Balduina.
Helenium arizonicum is a North American perennial plant in the Sunflower Family, commonly known as Arizona sneezeweed. It is native only to Arizona in the Southwestern United States, having been found only in four counties in that state: Apache, Navajo, Gila, and Coconino.
Helenium brevifolium is a North American perennial plant in the sunflower family, commonly known as shortleaf sneezeweed. It is native to the southeastern United States, from Virginia to eastern Louisiana and inland as far as Tennessee.
Helenium drummondii is a species of perennial plant in the Sunflower Family, commonly known as fringed sneezeweed. It is native to the south- central United States, in eastern Texas, Arkansas, and Louisiana.
Helenium elegans is a North American perennial plant in the sunflower family, commonly known as pretty sneezeweed. It is native to the south-central United States and to northeastern Mexico.
Helenium linifolium is a North American perennial plant in the sunflower family, commonly known as slimleaf sneezeweed. It is found only in southern Texas.
Helenium microcephalum is a North American perennial plant in the family Asteraceae, commonly known as smallhead sneezeweed. It is found in the southwestern and south-central United States and northern Mexico.
Helenium pinnatifidum is a North American perennial plant in the sunflower family, commonly known as southeastern sneezeweed. It is found in the southeaster United States.
Helenium quadridentatum is a North American plant in the family Asteraceae, commonly known as longdisk sneezeweed. It is found in the southeastern and south-central United States as well as Mexico, Cuba, Guatemala, and Belize.
Helenium thurberi is a North American plant in the sunflower family, commonly known as Thurber's sneezeweed. It is native to Mexico and the southwestern United States (Arizona).
Helenium vernale is a North American species of flowering plant in the aster family known by the common name Savanna sneezeweed or spring sneezeweed. It is native to the southeastern United States, from Louisiana to the Carolinas.
 | This Asteroideae article is a stub. You can help Wikipedia by expanding it. |
