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Buying a new lichen field guide and then going out to try to identify as many as possible was amazingly humbling. I'm gonna need someone to hold my hand through this process, because it's more difficult than I thought. If you are good at this, I need your help--it might be good to know these are all on Great Blue Hill, on a wet day. Ready? Here goes:

lichen01 photo P1010125_zps57207bb4.jpg
Porpidia crustulata, Concentric boulder lichen.

lichen06 photo P1010064_zps44b4c9a5.jpg
Unidentified crustose lichen on rock.

lichen07 photo P1010046_zps931688fa.jpg
Flavoparmelia caperata, Green tree shield lichen.

lichen05 photo P1010113_zpsfebd0677.jpg
Xanthoparmelia sp.

lichen03 photo P1010117_zps4c2cc007.jpg
Unknown crustose lichen on rock.

lichen08 photo P1010034_zps9401c729.jpg
Possibly Arctoparmelia centrifuga.

lichen02 photo P1010118_zps5df9c973.jpg
Unknown crustose lichen on rock.

lichen04 photo P1010116_zpsc35dabf1.jpg
Unidentified crustose lichen on tree bark.

lichen14 photo P1010054_zps6a1383f1.jpg
Unknown foliose lichen on rock (Peltigera sp.?)

lichen11 photo P1010055_zpsebb796e5.jpg
Underside of the same.

lichen15 photo P1010059_zps56195353.jpg
Unknown crustose lichen on rock.

lichen16 photo P1010052_zps90a19ebb.jpg
Unknown foliose lichen on rock (Umbilicaria sp.?)

lichen12 photo P1010058_zps4e9612bc.jpg
Underside of the same.

lichen09 photo P1010056_zpsdb590135.jpg
Unknown foliose lichen on rock (Lasallia papulosa?)

lichen13 photo P1010053_zpse8cd5669.jpg
Unknown crustose lichen on rock.

lichen10 photo P1010067_zpsd25c014c.jpg
Multiple foliose lichens on rock.


( 6 comments — Leave a comment )
Dec. 23rd, 2014 02:39 am (UTC)
Love the photos!

Are you aware of this blog: New Hampshire Gardens Solutions? He has a lot of material on lichens (and lists that guide as one of his references.) I absolutely adore his writing style - I wish he were my next door neighbor.
Dec. 23rd, 2014 11:15 am (UTC)
I was not aware--I'll have to check that out!
Allen Norcross
Dec. 24th, 2014 12:26 am (UTC)
Thanks for the glowing recommendation!
Dec. 23rd, 2014 02:09 pm (UTC)
Here's what Malcolm says (via email, since he couldn't comment here anonymously)...

Dear Jef,
Sara asked me to help you with lichen ID. I’m a southern lichen guy, so a northern lichenologist might be able to do something with some photos that puzzle me. For instance, the crusts in photos 1, 5 and 6 are mysteries (and I think you should be cautious about calling Photo 1 Porpidia crustulata, as there are several possibilities). So take all this with a grain of salt, but here are some possible IDs:
Photos 2, 11 and 15 are all Porpidia albocaerulescens.
Photo 7 is a Lecanora sp.
I think you’re right on 3 and 4.
Photo 8 is a Physcia, possibly P. aipolia.
Photos 9, 10 and 14 are Lasallia papulosa.
Photos 12 and 13 are Umbilicaria mammulata.
Photo 16 is of Lasallia and Umbilicaria together, and it took this southern boy a while to realize the white fluffy stuff is snow, and not a lichen reproductive structure!
Hope this helps. Feel free to contact me directly, mhodges1957@gmail.com
Yours—Mal Hodges
Dec. 23rd, 2014 04:20 pm (UTC)
Wow, thanks so much! This is very helpful and I really appreciate it, thanks Sarah, thanks Mal!
Allen Norcross
Dec. 24th, 2014 12:24 am (UTC)
Your second photo from the top is of smoky eye boulder lichen (Porpidia albocaerulescens) You have several shots of this lichen here.
Your 9th photo is of toadskin lichen (Lasallia papulosa). You also have two or three photos of this one.
Your last shot is of rock tripe lichen (Umbilicaria mammulata).
It takes a while to learn how to identify lichens, but you'll get there. It's a fascinating subject!
( 6 comments — Leave a comment )


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