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list of poisonous plants
In article . com,
wrote: While the saps of Toxicodendron (poison sumac(h)s) are highly allergenic for most people, do you have a cite that shows that all other sumachs have "toxic burn" saps? We do converse in odd places! Not really. I have seen such references in gardening books, but they are notoriously unreliable. Several people have witnessed it for at least Rhus typhina (though at a MUCH lesser level), and I can for Cotinus coggygria. I am not a 'sensitive' person. The last produces very little sap, so the chances are low. In my case, neither Rhus typhina nor Cotinus coggygria cause me as much reaction as Toxicodendron diversilobum, though the course of the reaction is similar. And they can penetrate only thin skin, whereas the last gets through medium skin (but not thick). They aren't much worse than Vinca major on me. And, in all of those other cases, there is no toxin carried on the surface of the leaves, so that it causes trouble only when pruning/removing and then the sap gets on thin skin. In my limited experience, a fair proportion of the effect of Toxicodendron diversilobum is because the surface oil carries the toxin. There are many plants whose sap is quite seriously irritant, but which produce very little even when cut and none at all if merely brushed against - they then get classified as non-toxic. I have evidence that these include Humulus lupus. Regards, Nick Maclaren. |
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