Observation 20037: Peltigera Willd.

When: 2009-03-31

Collection location: Istanbul, Turkey [Click for map]

Who: Adnan Sınar (mushroomaniac)

Specimen available

Found among moss. Looks like the leaves of cabbage. There are firs and oaks around. Has a leathery structure. On the back side, there are protrusions (spines) like the ones on a sea urchin but they are very soft and flexible.


Proposed Names

-80% (1)
Recognized by sight
56% (1)
Recognized by sight: I would call this a dog’s lichen, Peltigera sp.
55% (1)
Recognized by sight: This looks a lot like yours, Adnan. It even has those spines.
Thanks, Gerhard, for winnowing it down to a genus!

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= Observer’s choice
= Current consensus


Add Comment
By: Jason Hollinger (jason)
2009-04-08 13:51:55 CDT (-0400)

Thanks for taking a photo of the underside! It is especially critical for identification within Peltigera: appearance and distribution of rhizines, whether the veins are raised or colored or narrow, and presence of tomentum are all important.

P. membrancea quite possible
By: Jason Hollinger (jason)
2009-04-08 13:47:40 CDT (-0400)

But it’s hard to be 100% sure without a few details: P. membranacea should have “fuzzy, rope-like” rhizines (as opposed to smooth); and it should have a heavily tomentose surface (I can’t tell from the photo if it is merely pruinose or powdery instead of hairy, although I think it’s unusual for pruinose species to be that heavily frosted).