sterile xanthoria polycarpa

Ffranny ffranny at
Fri Sep 25 12:16:49 EST 1998

Anyone ever seen a sterile xanthoria polycarpa? Usually you can't see the
thallus for the apothecia, but these two plants look just like what a polycarpa
would look like if it had no fruits. Maybe they did a swap with the parmelia
minarum, which is supposed to be sterile here in Britain, but sometimes isn't.

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