IUBio

question about purple dead nettle - lamium purpureum

Stewart Robert Hinsley {$news$} at meden.demon.co.uk
Tue Apr 22 16:14:16 EST 2003


In article <Xns935F93A60811FSaltyThumb at 199.45.49.11>, Salty Thumb of
Death <salty at notsogreenthumb.fake> writes
>
>Does anyone one know why it's called dead nettle?  Something to do with 
>death or is it a corruption of some other language?  Is it true that it's 
>presence indicates heavy metals (particularly lead) in the soil?  From 
>hearsay, I've gathered that it tends to grow in 'wasteland' which makes 
>sense if the part about heavy metals is true.
>
White dead nettle, _Lamium album_, when not in flower, looks very like a
true nettle, _Urtica dioica_. I conjecture that the name dead (meaning
non-stinging) nettle was originally applied to this species, and
subsequently extended to other species of _Lamium_.

In my younger days I was led to believe that the resemblance of _Lamium
album_ to _Urtica dioica_ was a case of mimicry - for purposes of
herbivore deterrence. Now I'm not sure whether that is true, or an urban
legend - as herbivores do consume nettles, and as herbivores may well
recognise plants by smell, rather than sight.

_Lamium album_ is not the only plant that can be mistaken for a nettle;
one of the British species of _Stachys_ can fool me (again when out of
flower). The hemp-nettles are quite so similar.
-- 
Stewart Robert Hinsley



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