0 Members and 1 Guest are viewing this topic.
Hi all, as an Astrogeek I know next to nothing about plants (except how to grow and eat them.) After doing some weeding a stinging nettle brushed against my skin and hurt for several hours if not a full day.What I want to know is how and why does it hurt? What is on the plant that irritates your skin?
Stinging nettle[attachment=3660]The surface of a stinging nettle leaf. The large stinging hairs are hollow tubes with walls of silica making them into tiny glass needles. The bulb at the base of each hair contains the stinging liquid, which includes formic acid, histamine, acetylcholine and 5-hydroxytryptamine (serotonin). The tips of the glassy hairs are very easily broken when brushed, leaving a sharp point, which can pierce the skin to deliver the sting.
The nettle familyhttp://en.wikipedia.org/wiki/Urticaceaeisn't the same as the dead nettle family.http://en.wikipedia.org/wiki/Lamiaceae