Photo: Grindelia squarrosa 1.
Botanical name:
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.
