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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. 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.
Yellowdicks · Helenium argentinum · Arizona sneezeweed · Helenium aromaticum · Common sneezeweed · Bigelow's sneezeweed · Coastal sneezeweed · Shortleaf sneezeweed · Oldfield sneezeweed · Helenium chihuahuensis · Fringed sneezeweed · Pretty sneezeweed
Text excerpted from the Wikipedia article Helenium apterum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
