''Echinacea serotina'', the narrow-leaved purple coneflower or blacksamson echinacea, is a species of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

in the family

Asteraceae 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 ...

. It is native to the states of

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 O ...

and

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 ...

in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

. The species is sometimes listed as being found only in

, but the type collection was made in

, part of

at the time.Tropicos, ''Rudbeckia purpurea'' var. ''serotina'' Nutt
/ref> ''Echinacea serotina'' is very similar to '' E. purpurea'' but with stiffer, bristly hairs on the foliage.Bailey, Liberty Hyde 1914. Standard Cyclopedia of Horticulture 2: 1088.
as ''Echinacea purpurea'' var. ''serotina'' (Nutt.) L.H. Bailey

References

serotina Flora of the Southern United States Plants described in 1818 {{medicinal-plant-stub