Mature Stinging Nettle plant 3-7 feet tall showing opposite heart-shaped leaves with serrated edges and prominent stinging hairs (visible in detail), square stems (characteristic of mint family), long taproot, clusters of tiny greenish flowers in leaf axils (or hanging catkins for male plants), botanical illustration style with WARNING about stinging hairs highlighted in red, watercolor on white background, label: "Mature/Blooming Stage"
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