Grindelia howellii

Grindelia howellii
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Grindelia
Species:	G. howellii
Binomial name
	Grindelia howellii; Steyerm. 1934

Grindelia howellii, or Howell's gumweed,^[1] is a North American species of flowering plants in the daisy family. 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[]

^ "Grindelia howellii". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 18 July 2015.
^ Jump up to: ^a ^b Flora of North America, Grindelia howellii Steyermark, 1930
^ Steyermark, Julian Alfred. 1934. Annals of the Missouri Botanical Garden 21(3): 549-550 diagnosis in Latin, description and commentary in English)
^ Steyermark, Julian Alfred. 1934. Annals of the Missouri Botanical Garden 21(3): 540 line drawing of Grindelia howellii (figure 30 in center)

This Astereae article is a stub. You can help Wikipedia by .

[1] "Grindelia howellii". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 18 July 2015.

[n-2] Jump up to: ^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)

[1]

[2]

[3]

[4]