A genus of flowering plants commonly known as beggar-ticks, characterized by seeds with two or more barbed awns that cling to clothing.
From Latin 'bi-' (two) + 'dens' (tooth), referring to the distinctive two-toothed seed structure. Named for the characteristic seed morphology that aids in animal dispersal.
Bidens plants have mastered one of nature's cleverest hacks—their seeds literally evolved to stick to mammals so effectively that they've become global hitchhikers, spreading across continents on the fur of animals and clothing of humans!
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