Helianthus hirsutus

Helianthus hirsutus
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Helianthus
Species: H. hirsutus
Binomial name
Helianthus hirsutus
Raf. 1820
Synonyms[1]

Helianthus hirsutus is a North American species of sunflower known by the common name hairy sunflower. It is widespread across south-central Canada, the eastern and central United States, and northeastern Mexico. It ranges from Ontario south to Florida, Coahuila, and Nuevo León, and west as far as Minnesota, Nebraska, and Texas.[2]

Helianthus hirsutus is a perennial sometimes as much as 200 cm (almost 7 feet) tall, spreading by means of underground rhizomes. Leaves and stems are covered with stiff hairs. One plant can produce 1-7 flower heads, each with 10–15 yellow ray florets surrounding 40 or more yellow disc florets. The species grows in sunny locations in open forests or along the edges of forests.[3]

References

  1. ↑ The Plant List, Helianthus hirsutus Raf.
  2. ↑ Biota of North America Program 2014 county distribution map
  3. ↑ Flora of North America, Helianthus hirsutus Rafinesque, 1820. Hairy sunflower

External links

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