Peltigeraceae Peltigera didactyla Growth type foliose Chemical results negative Found on recently disturbed ground; roadsides, banks, quarries, dunes, urban waste ground Small thallus, tomentose lobes ascending when fertile. Young lobes with patches of pale soredia, disappearing when apothecia formed. Lower surface with distinct raised veins and simple rhizines. Spores 3-7 septate, 40-75 x 3.5-5 µm. Microscope photograph below. Host to various lichenicolous fungi including Corticifraga fuckelii Similar: P. membranacea is larger with strongly bullate tomentose lobes

Microscope photograph

Peltigera didactyla
Studland, Dorset. September 2012 and June 2013