Thanks very much for that most interesting reference. (I'm sure I'd have seen it earlier if I'd not let my sub to Science expire.) "These irritation-inducing m

Thanks very much for that most interesting reference. (I'm sure I'd have seen it earlier if I'd not let my sub to Science expire.) "These irritation-inducing molecules include histamine, acetylcholine, 5-hydroxytryptamine as well as formic acid and other low–molecular weight organic acids." Having been stung by bull-ants and like brethren, I can attest that as bad and as painful as these formic acid/concoction-type stings were they pail against what I experienced from Gympie-Gympie. "…none of these small molecules in the volar forearm of humans was entirely sufficient to reproduce the symptoms of a Dendrocnide sting," That is also fully consistent with my experience. What I find so interesting about this paper (in addition to my interest through experience), is that these are newly discovered toxins which seems somewhat strange given the ubiquity of Gympie-Gympie and its well-known ability to inflict excruciating pain. Presumably, this discovery will spur on further toxins research.