Helenium microcephalum

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Helenium microcephalum
Helenium microcephalum1.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Helenium
Species:
H. microcephalum
Binomial name
Helenium microcephalum
DC. 1836
Synonyms [1] [2]
  • Helenium oöcliniumA.Gray, syn of var. ooclinium
  • Helenium oocliniumA.Gray, syn of var. ooclinium
  • Heleniastrum ooclinium (A.Gray) Kuntze, syn of var. ooclinium
  • Heleniastrum oöclinium(A.Gray) Kuntze, syn of var. ooclinium

Helenium microcephalum is a North American perennial plant in the sunflower family, commonly known as smallhead sneezeweed. [3] It is found in the southwestern and south-central United States and northern Mexico. [4] [5]

Helenium microcephalum is an annual herb up to 120 cm (3.9 ft) tall, with wings running down the sides of the stems. Leaves are narrow and elliptical. One plant can have 300 or more small spherical or egg-shaped flower heads, generally no more than 12 mm (half an inch) in diameter. Each head can have 400 or more minuscule disc flowers 1.2–2.4 mm (0.047–0.094 in) across, each yellow or yellow-green toward the bottom but brown or red toward the tip. There are also 7-13 red or yellow ray flowers. [3]

Varieties [3] [5]

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<i>Helenium bolanderi</i> Species of flowering plant

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<i>Hymenoxys hoopesii</i> Species of flowering plant

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<i>Helenium flexuosum</i> Species of flowering plant

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<i>Helenium elegans</i> Species of flowering plant

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<i>Helenium pinnatifidum</i> Species of flowering plant

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