Close-up photo showing the stem with scattered hairs. The hairs are transparent, with a thick, sac-like base and long, slender, needle-like tip

Uritica dioica trichomes (hairs): The tip is glass-like, & the base of the hair is flexible. Press onto the hair, & the tip breaks as it penetrates flesh. Flexing squeezes the hair’s contents (histamines, etc.) into the wound. 📷: Jerome Prohaska CCBYSA3 #Uriticaceae #trichome #Botany 🌾🧪🌱