Gregorella humida, un lichen nouveau pour la Belgique, et notes sur le statut belge de deux autres cyanolichens, Fuscopannaria nebulosa et Protopannaria pezizoides ...

Gregorella humida , a new lichen for Belgium, and notes on the Belgian status of two other cyanolichens, Fuscopannaria nebulosa and Protopannaria pezizoides . – During surveys of abandoned quarries in Entre-Sambre-et-Meuse in recent years, two superficially similar cyanolichens considered extinct or absent from Belgium were collected. The first, Gregorella humida (Arctomiaceae), is reported for the first time from Belgium. The species colonizes the soil of a kaolin sand quarry in Oret. It was only collected once in 2004, so this pioneer lichen could already have disappeared due to forest recol... Mehr ...