Robert W. Freckmann Herbarium

  Grindelia squarrosa (Pursh) Dunal image
Photographer: Emmet J. Judziewicz           

Emmet J. Judziewicz

Keir Morse

Keir Morse
Family Asteraceae
Grindelia squarrosa (Pursh) Dunal
curly-cup gum-weed, gum-plant, gum-weed
Grindelia: named for David Hieronymous Grindel (1776-1836), a German pharmacologist, physician and professor of botany at Riga, Estonia
squarrosa: squarrose for "spreading horizontally; curved at the ends"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
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Status: Introduced - naturalized
Plant: erect, biennial/perennial, 4"-40" tall, smooth forb branched toward the top, base occasionally woody; taprooted
Flower: head 1"- 1 1/2" wide, sticky, 25-40 yellow rays; 1/2"-3/4" wide, yellow disk; inflorescence with many heads in branched clusters; blooms Aug.-S
Fruit:dry seed with no fluffy pappus
Leaf:alternate, dotted with resinous glands, toothed
Habitat: sun; dry; disturbed sites

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(for list of synonyms - see the varieties)

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