Order: Teloschistales       Family: Teloschistaceae Species: Caloplaca ferruginea Growth type crustose. Photos: On hazel and willow. The Burren and Gougane Barra, Ireland Photo immediately below: BLS Burren meeting 2009 Entire or immersed thin, smooth, pale whitish-grey thallus. Large bright-orange apothecia, often with uneven, flexose margins. Caloplaca species have clavate, usually 8-spored asci with ellipsoid, polarilocular spores. Caloplaca ferruginea: Ascospores 12-14 x 6-8 µm, septum 5 µm to approx 1/2 length of ascospore. Micro photos below. Epiphyte. Most frequent on Hazel and Willow but also occurs on twigs and trunks of other basic-barked trees. K+ crimson / purple. Similar: C. crenularia. Found on siliceous rocks.

Micro photographs




Caloplaca ferruginea. April and September 2009