Grindelia howellii

Grindelia howellii
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Grindelia
Species:
G. howellii
Binomial name
Grindelia howellii

Grindelia howellii, or Howell's gumweed,[1] is a North American species of flowering plants in the family Asteraceae. It is native to the northwestern United States, in the States of Idaho and Montana.[2]

Grindelia howellii grows in open, sunny sites on rocky slopes and in alluvial deposits. It is a perennial herb sometimes as much as 150 cm (5 feet) tall. The plant usually produces numerous flower heads in crowded, flat-topped arrays. Each head has 18-25 ray flowers, surrounding a large number of tiny disc flowers.[2][3][4]

References

  1. ^ NRCS. "Grindelia howellii". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 18 July 2015.
  2. ^ a b Flora of North America, Grindelia howellii Steyermark, 1930
  3. ^ Steyermark, Julian Alfred. 1934. Annals of the Missouri Botanical Garden 21(3): 549-550 diagnosis in Latin, description and commentary in English)
  4. ^ Steyermark, Julian Alfred. 1934. Annals of the Missouri Botanical Garden 21(3): 540 line drawing of Grindelia howellii (figure 30 in center)


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