In article , Kay writes:
| In article , Nick Maclaren
| writes
|
| There are, indeed, several species in the UK.
|
| Only two, AFAIK, unless you are going to count the wall pellitories
| which are the same family but not the same genus.

You have forgotten Urtica pilulifera, the Roman or small nettle,
I think.

| The annual nettle
| (Urica urens) spreads by seed alone, but the ubiquitous stinging
| nettle (U. dioecia)
|
| Urtica dioica

I always get that one wrong! Thanks.


Regards,
Nick Maclaren.