Observation 112475: Parmotrema hypotropum (Nyl.) Hale
When: 2012-10-06
(35.5618° -84.2371° 259m)
No herbarium specimen

Notes: Possibly several species (?) of lichen growing on my deck.

Proposed Names

28% (1)
Eye3
Recognized by sight
84% (1)
Eyes3
Recognized by sight: first one (image 269340) based on very loose, ascending, broad lobes with abundant long cilia, and pale areas near margin underneath

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Jason
By: Christine Braaten (wintersbefore)
2012-10-06 19:44:50 CEST (+0200)

I knew you’d be along shortly to give me a very informed ID! Thank you very much!

Yes, multiple species
By: Jason Hollinger (jason)
2012-10-06 19:39:44 CEST (+0200)

Third photo has Flavoparmelia baltimorensis (right / bottom-right), and maybe the one in the upper left is the same thing. Look at the lobe tips: they are identical shape and color. And there are some laminal raised soralia starting. Ah! Maybe the second one is going to be F. caperata. F. baltimorensis is exclusively on rock; F. caperata can be either in other parts of the range, but in my experience it is impossible to find F. caperata in rock in the Smokies region. But… maybe this one is growing on top of the F. baltimorensis… The important difference is the quality of the soralia when they are young. In F. baltimorensis they start as fully-corticate pustulate swellings which eventually break up into coarse “dactyls” (granular fragments that look sort of soredia-like but which clearly have bits of cortex attached still). The specimen in the upper left appears to be sorediate right from the very start — that’s F. caperata. But it’s hard to be sure until it develops further.

Created: 2012-10-06 19:07:03 CEST (+0200)
Last modified: 2012-10-06 19:34:25 CEST (+0200)
Viewed: 43 times, last viewed: 2016-10-24 17:36:50 CEST (+0200)
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