Order: Caliciales       Family: Caliciaceae Species: Orcularia insperata (Rinodina biloculata) Growth type crustose Photos: Knockgorm and Dromore, Co. Cork, SW Ireland. Thin greyish-green thallus, small (to 0.3mm diam) black discs with brown or colourless true exciple, thalline margin absent or poorly developed. Hypothecium brown, spores 1-septate, 11-19 x 6-9 µm and thickened at the septum. Micrographs below. Chemical results negative. Sometimes host to Lichenodiplis fallaciosa Usually found on the soft, basic bark of Elder, Elm or Buddleia. As the apothecia are very small it is easily missed and possibly under-recorded. Similar: Amandinea punctata and Catillaria nigroclavata

Microscope photograph



Orcularia insperata (Rinodina biloculata). May 2012, August 2024