March 2016

The Lesser-known Caloplaca Species

I am putting up the rest of the Caloplacas, for which I have no photographs as a BLOG.

Caloplaca ahtii

Species named after the great Finnish lichenologist Ted Ahti. It is an insignificant little thing which has never been found fertile in the UK. It has an effuse thallus which is bluish grey consisting of squamule like areoles which are to a great or lesser extent, sorediate. It has been found on aspen bark in Central Scotland and is currently considered rare. It could well be under recorded. One for the experts, I think!

Calopla approximata

This species has...