Rahul Sharma (Editor)

Helianthus nuttallii

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Kingdom
  
Plantae

Genus
  
Helianthus

Higher classification
  
Sunflowers

Order
  
Asterales

Scientific name
  
Helianthus nuttallii

Rank
  
Species

Helianthus nuttallii Helianthus nuttallii photos Saskatchewan Wildflowers

Similar
  
Sunflowers, Daisy family, Helianthus californicus, Helianthus grosseserratus, Helianthus pauciflorus

Helianthus nuttallii (Nuttall's sunflower) is a species of sunflower native to northern, central, and western North America, from Newfoundland west to British Columbia, south to Missouri, New Mexico, and California.

Helianthus nuttallii BOTANYcz HELIANTHUS NUTTALLII Torr et A Gray Nuttall39s

Helianthus nuttallii is a herbaceous perennial plant growing to 50-400 cm (20-160 inches) tall. The leaves are opposite on the lower part of the stem, alternate higher up, narrow lanceolate, 8–20 cm (3.2-8.0 inches) long and 6–30 mm wide, with a rough texture. The flowers are yellow, produced in a flowerhead approximately 9 cm (3.6 inches) diameter with 10–20 ray florets and at least 60 disc florets; each stem bears one to a few flowerheads.

Helianthus nuttallii SEINet Arizona Chapter Helianthus nuttallii
Subspecies
  • Helianthus nuttallii subsp. nuttallii - Canada, western United States. H. nuttallii subsp. nuttallii is considered by some to be a synonym for H. nuttallii. However, others argue that it is distinct from the species.
  • Helianthus nuttallii subsp. parishii (A.Gray) Heiser - (Los Angeles sunflower). Southern California, endemic. It is an endangered subspecies thought to have been extinct since 1937, but it was rediscovered in southern California in 2001.
  • Helianthus nuttallii subsp. rydbergii (Britton) R. Long. - Central Canada, interior northwestern United States

    • Helianthus nuttallii SEINet Arizona Chapter Helianthus nuttallii subsp nuttallii
    Helianthus nuttallii httpsuploadwikimediaorgwikipediacommonsthu

    Helianthus nuttallii Helianthus nuttallii Nuttall39s sunflower NPIN

    Helianthus nuttallii Helianthus nuttallii Nuttalls sunflower Discover Life

    Helianthus nuttallii Helianthus nuttallii Nuttall39s sunflower NPIN

    References

    Helianthus nuttallii Wikipedia
    (Text) CC BY-SA