biodiversiteit… Rare fungus? (No) Gall and white heather 22 aug 201030 dec 2023 White flowering heather, calluna vulgaris...I've never seen before, Knopper gall (Knopper gal) (Andricus quercuscalicis) is not rare but you don't see it often. The fungus seems to be a Dennestekelzwam…