Synonyms for Rosinweed (same or very similar meaning)
WordNet sense 1 (North American perennial having a resinous odor and yellow flowers):
Silphium laciniatum
WordNet sense 2 (any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock):
gumweed, tarweed, gum plant
From the ODE community, based on WordNet
add/edit