Pseudevernia furfuracea

Pseudevernia furfuracea

Observation - Pseudevernia furfuracea - UK and Ireland. Description: A strap-like lichen on a twig (perhaps hawthorn). Grey on the top surface and dark on the underside with turned-over edges. The specimen had a small number of small apothecia (see lower left of specimen in photo 3); the inside of the apothecia appeared br

A strap-like lichen on a twig (perhaps hawthorn). Grey on the top surface and dark on the underside with turned-over edges. The specimen had a small number of small apothecia (see lower left of specimen in photo 3); the inside of the apothecia appeared brown/tan. Photo 4 shows is a photomicrograph of the isidiate surface. Photo 5 is a photomicrograph of the tip of one of the lobes: is this just the growing tip or some other structure.
All features other than the apothecia are typical of Pseudevernia furfuracea. Apothecia in this species are described as rare and as being large and flat: are these just undeveloped or is my ID wrong?