Order: Pertusariales       Family: Pertusariaceae Species: Lepra multipuncta (Pertusaria multipuncta) Growth type crustose. Photos: On oak. Glengarriff woods, Co. Cork, SW Ireland. Identification confirmed by John Douglass Variable. Thallus whitish-grey, thin and smooth or thick, warted and +/- cracked. Scattered white, +/- flat, sorediate warts with 1-5 pale to dark brown apothecia within each wart. Asci are 1-spored, spores 90-170 x 30-70 µm. Microscope photographs below. Found on smooth acidic bark, especially on twigs and young branches. Most frequent on trees in old, undisturbed woodlands. K+ yellow, C-, KC+ yellow, P+ orange-red, UV- or glaucous.

Microscope photographs



Lepra multipuncta (Pertusaria multipuncta). November 2009 and January 2011