stinging nettle leaves burning hair pink plant shine through shades of green light light green dark green weed urtica stinging nettle plant urticaceae urtica dioica food plant burn painful faserpflanze protection mechanism burning liquid serotonin histamine acetylcholine sodium formate nettle stings toxic butterflies medicinal plant food processing plant nettle hair true leaves stalked leaf blades elliptical lanceolate leaf buds leaf margin toothed stipules free pictures free photos free images royalty free free illustrations public domain
Hans (pixabay.com)
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