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Known by the common name of Oregon gumweed, this perennial or subshrub attains mature height of 20 to 150 centimeters. Stems are green to deep purplish red; the oblong to lanceolate leaves are one to fifteen centimeters long. These leaves manifest as generally fleshy, and may exhibit green or red veins. The flower heads may vary in number from a singlet to multiples. There are numerous disk flowers, and the corolla throat is abruptly wider than the tube.