Cornish Lichen ID please

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Fof
New user
Posts: 2
Joined: Sat Apr 17, 2021 4:50 pm

Cornish Lichen ID please

Post by Fof » Sat Apr 17, 2021 5:04 pm

Guys
I would be very grateful if you would ID these 3 or 4 lichens for me.
Looks a bit like Sea Ivory, but located about 2 miles inland on a granite monolith
Looks a bit like Sea Ivory, but located about 2 miles inland on a granite monolith
Looks a bit like Sea Ivory, but located about 2 miles inland on a granite monolith
Looks a bit like Sea Ivory, but located about 2 miles inland on a granite monolith
Located on a granite monolith
Located on a granite monolith
Located on an old Malus sylvestris (Crab Apple) tree on moorland
Located on an old Malus sylvestris (Crab Apple) tree on moorland
Located on an old Malus sylvestris (Crab Apple) tree on moorland
Located on an old Malus sylvestris (Crab Apple) tree on moorland
TIA
Fof

Mark Powell
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Posts: 92
Joined: Mon Jan 07, 2019 4:31 pm

Re: Cornish Lichen ID please

Post by Mark Powell » Mon Apr 19, 2021 6:21 am

I am going to skip past your first two (Ramalina) photos, leaving those for someone else to comment on.

Your yellow lichen on the granite monolith is Xanthoria parietina. One might hope or expect something more specialist on a monolith but we tend to find a mixture of scarce specialists and common species on such stones. The following drawings are of one of the sarsen standing stones at Avebury, one drawing showing the specialists on the stone and the other showing the common species.
avebury1.jpeg
avebury2.jpeg
avebury3.jpeg
The grey foliose lichen on Malus looks very much like Parmotrema perlatum. I am fairly confident that the genus is Parmotrema but I would need closer images and perhaps the result of chemical tests to be certain of its identity.

The subtle but distinctive yellow-grey-green colour of your last photo indicates that this is a species of Flavoparmelia. The wrinkly surface, and the way that it is not closely appressed to the bark suggest that this is F. caperata (rather than F. soredians).
http://www.lichens.lastdragon.org/Flavo ... erata.html

Fof
New user
Posts: 2
Joined: Sat Apr 17, 2021 4:50 pm

Re: Cornish Lichen ID please

Post by Fof » Mon Apr 19, 2021 10:31 am

Mark
Thank you very much, for your reply.
I love to see lichens, but I have to admit that what I know about them, and their IDs, can be written on the head of a pin and still leave room for the Encyclopedia Britannica :lol: :lol:
Interesting to see that you include Ramalina siliquosa on the drawing of the Sarsen specialists. This is the species I thought was Sea Ivory, found on the granite cliffs of Cornwall. Hmmm!! Wrong again?? :oops: :!: :!:
Fof
Ramalina siliquosa (sea ivory)  01 (small).jpg
Ramalina siliquosa (sea ivory)  04 (small).jpg

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