Image of dimple lichen

Description:

Half dry conditions. Eventually Gyalecta leucaspis? According to Wirth a very rare species for Germany. Pruegger et all. 'Alphabetical list of lichenized fungi for the six phytogeographical regions of Slovenia' has this species listed. G. leucaspis has vividly pink to light orange thallus and its apothecia rim disintegrate into 5-10 radial sections when old (Wirth, 1995). This corresponds well to my pictures. However, I can not find thick gray-white pruina on apothecia which is also a typical character for G. leucapsis. On the other hand, in literature and on web I have never found mentioning vivid orange as a possible thallus color of G. jenensis. G. jenensis is quite common here and also a possibility. Observing spores would resolve the dilemma. Habitat: Road scarp rocks of a dirt road, humid shady place, mixed forest and grassland around, no insolation during winter months, often wet, north oriented, 1.5 mm off the road level, exposed to precipitations, precipitations ~3.000 mm/year, average temperature 7-9 deg C, elevation 400 m (1.300 feet), alpine phytogeographical region. Substratum: vertical calcareous rock surface. Ref.: http://members.chello.at/johannes.pruegger/uni/slovenia/ , Wirth, (1995), Die Flechten Baden-Wuerttembergs, Ulmer, Vol.1., p410, Brodo, Sharnoff, Sharnoff (2001), Lichens of North Ameria, Yale Uni.Press, p329.