Photo: Grindelia squarrosa 1.

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Botanical name: 
Photo: Grindelia squarrosa 1.

Closeup of flowers - no gum in sight. Boardman, OR, US. Wild. 1996-07-17.


Grindelia squarrosa (Pursh) Dunal
Engl.: curlycup gumweed, ague weed, scaly grindelia.
Deu.: Sperriges Gummikraut, Harzkraut.
Bot. syn.: Grindelia perennis A. Nels., Grindelia serrulata Rydb.