''Helenium campestre'' is a North American

perennial plant A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...

in the sunflower family, commonly known as oldfield sneezeweed. It is native to the southeastern United States, in

Arkansas Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the Osage ...

and northwestern

Louisiana Louisiana , group=pronunciation (French: ''La Louisiane'') is a state in the Deep South and South Central regions of the United States. It is the 20th-smallest by area and the 25th most populous of the 50 U.S. states. Louisiana is borde ...

.Biota of North America Program 2014 county distribution map
/ref> ''Helenium campestre'' is an perennial herb up to 100 cm (40 inches) tall. One plant can produce as many as 20

flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

, in branching arrays. The head is spherical or egg-shaped, with sometimes as many as 700

disc floret The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

s, each floret yellow near the base but purple or brown towards the tip. There are also 9-15 yellow

ray florets The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

. The species grows in ditches, fields, and streambanks.Flora of North America, ''Helenium campestre'' Small, 1903. Oldfield sneezeweed
/ref>

References

Flora of the Southeastern United States Plants described in 1903 campestre Flora without expected TNC conservation status {{Asteroideae-stub