Ramalina in upper splash zone

Ramalina in upper splash zone

Observation - Ramalina in upper splash zone. Description: Another frustrating day with the lichens - is this one species or more? Considerable variation in fruiting bodies from flat to globular, from white to black and black-ringed. R.siliquosa is said to be very variable, so I am going for this as it doesn't

Another frustrating day with the lichens - is this one species or more? Considerable variation in fruiting bodies from flat to globular, from white to black and black-ringed. R.siliquosa is said to be very variable, so I am going for this as it doesn't look like any of the others.