Grindelia squarrosa

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

Grindelia Squarrosa.

Classic texts: Petersen 1905.

Grindelia Squarrosa.

Classic texts: Ellingwood 1919.

Photo: Grindelia squarrosa 1.

Photo: Grindelia squarrosa 1. Closeup of flowers - no gum in sight. Boardman, OR, US. Wild. 1996-07-17.

Photo: Grindelia squarrosa.

Photo: Grindelia squarrosa. Flowering plant. Boardman, OR, US. Wild. 1996-07-17.