Echinacea serotina

{{Short description|Species of flowering plant}}

{{Hatnote|This article is about the species Echinacea serotina. For the species represented by the taxonomic synonym of the same name, see Echinacea purpurea.}}

{{Speciesbox

|image =

|genus = Echinacea

|species = serotina

|authority = (Nutt.) DC.

|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/gcc-126545 The Plant List, Echinacea serotina (Nutt.) DC. ][http://www.tropicos.org/Name/50217636 Tropicos, Echinacea serotina (Nutt.) DC.]

|synonyms =

• Brauneria serotina (Sweet) Bergmans
• Rudbeckia purpurea var. serotina Nutt.
• Rudbeckia serotina (Nutt.) Sweet 1823 not Nutt. 1834
• Echinacea purpurea var. serotina (Nutt.) L.H.

}}

Echinacea serotina, the narrow-leaved purple coneflower or blacksamson echinacea, is a species of flowering plant in the family Asteraceae. It is native to the states of Arkansas and Louisiana in the United States.[https://www.biodiversitylibrary.org/page/723931#page/178/mode/1up Nuttall, Thomas 1818. Genera of North American Plants 2: 178] as Rudbeckia purpurea var. serotina Nutt. The species is sometimes listed as being found only in Louisiana, but the type collection was made in Arkansas, part of Louisiana at the time.[http://www.tropicos.org/Name/50132418 Tropicos, Rudbeckia purpurea var. serotina Nutt]

Echinacea serotina is very similar to E. purpurea but with stiffer, bristly hairs on the foliage.[https://www.biodiversitylibrary.org/page/19620672#page/534/mode/1up Bailey, Liberty Hyde 1914. Standard Cyclopedia of Horticulture 2: 1088.] as Echinacea purpurea var. serotina (Nutt.) L.H. Bailey