Rubberweed (2)
Rubberweeds, also commonly called Bitterweeds, usually have 8 petals with three-toothed tips which droop when the plant ages. The yellow disk flowers form a dome. Leaves are divided into narrow segments. See also Old-Man-of-the-Mountain.
Pingue Rubberweed Family:
Sunflower (Asteraceae) Grows to 18" with up to 10 woody stems and 30 flower heads per plant. Flowers are ¾" across. Flora of North America reference. |
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Colorado Rubberweed Family:
Sunflower (Asteraceae) Very similar in appearance to Pingue Rubberweed but on a much smaller scale. Grows to less than 10" high with up to 20 stems and 200 flower heads. The flowers are less than ½" across. Flora of North America reference. |