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Not sure I can add much
By: Jason Hollinger (jason)
2014-04-02 04:26:34 JST (+0900)

This is a wet specimen, throwing colors off a bit. These apothecia do look marginless. They are paler than I’m used to. I find Fuscopannaria s.l. to be typically more reddish, but never particularly dark. The best difference between Fuscopannaria s.l. and Parmeliella I find to be the shape of the lobes: Fuscopannaria s.l. is made of essentially discrete overlapping squamules, while Parmeliella is truly foliose — very small, even smaller than Fuscopannaria usually, but still the lobes are elongate and not overlapping, esp. seen near the growing margin. Also, I believe most if not all Parmeliella grow on bark, while some Fuscopannaria (the Vahliella in particular?) grow on rocks. (Would be good to find verification of that, though, I’m just speaking about the few species of each genus which I happen to be familiar with.) To be complete, we should mention Pannaria, as well: larger than Parmeliella but also foliose instead of squamulose. And don’t forget Protopannaria pezizoides, very common on soil in northwestern North America, but it has distinctive beaded-rimmed apothecia. That should exhaust the generic options for North America.

British Flora says:
By: zaca
2014-03-26 01:24:42 JST (+0900)

“The species of Parmeliella are superficially quite similar to species of Fuscopannaria from which they are easily distinguished when fertle in Europe by the absense of a thalline margin and the amyloid hymenium.”
Moreover, according to the description given for the species of Fuscopannaria and of Vahliella, the colour of apothecia is much darker the in this specimen (brown, red-brown, black-brown).
Maybe Jason can say something about North AmericaN species.

Definitely Fuscopannaria s. lato
By: Jason Hollinger (jason)
2014-03-25 13:12:59 JST (+0900)

I’m thinking F. leucophaea = Vahliella leucophaea… but there are a whole bunch of other options and I don’t know any of them…

with blue-green algae?
By: Christian (Christian Schwarz)
2014-03-25 12:24:29 JST (+0900)

on rocks embedded in trail bank

Created: 2014-03-25 12:22:11 JST (+0900)
Last modified: 2014-03-25 13:13:43 JST (+0900)
Viewed: 34 times, last viewed: 2019-07-12 09:53:59 JST (+0900)
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