Observation 269841: Physconia Poelt

When: 2017-02-13

Collection location: Round Valley Regional Preserve, Contra Costa Co., California, USA [Click for map]

Who: Pgrunow

No specimen available

Notes:
frosty pale gray foliose lichen on rock

Images

Proposed Names

29% (1)
Recognized by sight

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= Observer’s choice
= Current consensus

Comments

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You are right. I misread the text.
By: Pgrunow
2017-02-16 10:40:28 PST (-0800)

Looks like I would need to do chemistry tests to get anywhere.

I think this has marginal soredia
By: Jason Hollinger (jason)
2017-02-16 10:24:02 PST (-0800)

I didn’t propose a name because there are three possibilities then; P. isidiigera, P. enteroxantha and P. leucoleiptes. Even P. detersa may be a (distant) possibility. It’s way easier to identify P. perisidiosa with its distinctive little reflexed, splayed tips. (When it actually bothers to do that! Some specimens of perisidiosa are pretty ambiguous.)