Spiny cocklebur, Xanthium spinosum L., non-native
also called "spiny clodbur"
- a dicot in the Asteraceae family -
The spiny cocklebur has sharp thorns that can be up to 3 inches long

Spiny cocklebur grows to 2 feet tall. The rounded cluster on the very top are the males flowers.
The female flowers are lower on the plant and form the burs after being pollinated from the male
flowers above. Below is a specimen without thorns but has a 12 spotted cucumber beetle visiting. This plant is also lovingly called the "Velcro weed."
chickweed is active in early spring
common in western meadow
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