This photograph of stinging nettle (Urtica dioica) leaves was taken at the Kanapaha Botanical Gardens. Stinging nettle plants contain stinging hairs called trichomes which act like hypodermic needles; they inject histamine and other chemicals into animals upon contact.Galleries:Alachua, Kanapaha Botanical Gardens, Other Herbaceous PlantsKeywords:Alachua county, FL, Florida, Gainesville, Kanapaha Botanical Gardens, common nettle, leaves, stinging nettle, urtica dioica, urticaceaePhoto Location: Kanapaha Botanical Gardens, Gainesville, FLPhotographer: Dr. Roy WinkelmanDate of Photo: 07/24/2013Device Make: CanonDevice Model: Canon EOS 5D Mark IIExposure Time: 0.025F Number: 13Original Dimensions: 5616×3744Picture Orientation: LandscapeGPS Coordinates: 29°36'43.89"N 82°24'32.13"WPicture Number: 25039
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