Any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally, often poisonous to livestock
English: gumweed, gum plant, tarweed, rosinweed
rosinweedEnglish
rosinweed, Silphium laciniatum, gum plant, gumweed, tarweed
Noun
North American perennial having a resinous odor and yellow flowers
English: rosinweed, Silphium laciniatum