Helianthus pumilus | |
---|---|
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Helianthus |
Species: | H. pumilus
|
Binomial name | |
Helianthus pumilus
Nutt. 1841
|
Helianthus pumilus is a North American species of sunflower known by the common name little sunflower [1] or bush sunflower. [2] It is found in the western United States, primarily the Rocky Mountain region of Montana, Wyoming, and Colorado, with a few isolated populations in Utah and Idaho. [3]
Helianthus pumilus grows on dry rocky soil in the mountains and nearby plains. It is a perennial herb up to 100 cm (40 inches) tall. One plant usually produces 1-6 flower heads, each containing 8-13 yellow ray florets surrounding 30 or more yellow or brown disc florets. [1] [4]