Helenium apterum

{{Short description|Species of flowering plant}}

{{Speciesbox

|image =

|genus = Helenium

|species = apterum

|authority = (S.F.Blake) Bierner 1972

|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/gcc-50845 The Plant List, Helenium apterum (S.F.Blake) Bierner ][https://www.biodiversitylibrary.org/page/10008602#page/51/mode/1up Bierner, Mark William. 1972. Sida 5(1): 47]

|synonyms = *Hecubaea aptera S.F.Blake 1924

}}

Helenium apterum is a North American perennial plant in the sunflower family. It has been found only in the state of Durango in northwestern Mexico.[http://www.tropicos.org/Name/50155290 Tropicos, Hecubaea aptera S.F. Blake ] Turner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100

Helenium apterum is a perennial herb up to 100 cm (40 inches) tall with thick rootstocks producing only one stem with a single flower head. Leaves at the base can be up to 30 cm (1 foot) long, the leaves higher on the stem much smaller. The head is about 4 cm (1.6 inches) across, with a hemispherical yellow disc surrounded by about 14 yellow ray flowers.[https://www.biodiversitylibrary.org/page/381968#page/773/mode/1up Blake, Sydney Fay. 1924. Contributions from the United States National Herbarium 22(8): 649–650] as Hecubaea aptera