Hoarhound-Marrubium vulgare

This non-native plant that often grows in disturbed areas is hoarhound (Marrubium vulgare), a member of the mint family (Lamiaceae). It has square stems and opposite leaves. It is native to Europe, Asia, and northern Africa and brought over to the U.S. as a garden plant with various medicinal properties. However, it escaped gardens and now grows out in the wild.
The small white flowers are followed by burs with hooks that can catch on anything that brushes up against them.
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