Observation 100171: Physciella chloantha (Ach.) Essl.

When: 2012-07-08

Collection location: Ledge County Park, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

29% (1)
Recognized by sight
57% (1)
Eye3 Eyes3
Used references: ID provided by Jason Hollinger (+Physcia dubia, + Phaeophyscia orbicularis)

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I don’t know about the Physcia either
By: Jason Hollinger (jason)
2012-07-14 00:03:38 PDT (-0700)

P. pusillodes is promising, because the soralia are pretty well-developed. But I’m just going off of the habitat for P. millegrana. It’s known to do well on manmade structures. (Along with P. adscendens in other parts of the country.) It doesn’t not look like it…

You’re probably right
By: Andrew Khitsun (Andrew)
2012-07-13 19:25:29 PDT (-0700)

Phaeophyscia pusilloides was the species you identified for me from metal junk as a substrate, and we figured the same probably populates old benches and picnic tables. As far as Physcia millegrana – I just don’t know. There isn’t much of the features seen here, and I’m just not used to seeing “baby” ones – I don’t know how they’re supposed to look.

So which species are you thinking?
By: Jason Hollinger (jason)
2012-07-13 17:32:59 PDT (-0700)

Physcia millegrana and Phaeophyscia pusilloides?

Huzzah for perseverance!

Mystery solved (almost)
By: Andrew Khitsun (Andrew)
2012-07-13 17:21:18 PDT (-0700)

I was trying to ID lichens on benches for a long time, but couldn’t get a good shot and a good sample. Got a half-decent shot and few bits and pieces scraped off the bench, finally. It turned out to be two lichen (there are yellow ones too, but I only care about green rosettes at this point). Both appear almost identical from above – light green with soralia that are lip-shaped to nest-shaped. The difference is in the lower surface – one is white and another is dark. So it must be Physcia and Phaeophyscia, respectively. On the photos, you can recognise the two by the rhizines protruding from under the lobes – the former has scarce white rhizines, and the latter has abundant black rhizines with white tips. You can see the two side-by-side in the center of the second photo.

Created: 2012-07-13 17:09:49 PDT (-0700)
Last modified: 2015-12-25 14:39:26 PST (-0800)
Viewed: 39 times, last viewed: 2018-01-21 02:11:39 PST (-0800)
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