Observation 95720: Physciella chloantha (Ach.) Essl.

When: 2012-05-28

Collection location: Carver-Roehl County Park, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

57% (1)
Recognized by sight
86% (1)
Eye3 Eyes3
Used references: ID provided by T.Esslinger

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Physciella chloantha, after all…
By: Andrew Khitsun (Andrew)
2014-06-29 19:46:55 CDT (-0400)
I guess I didn’t understand term “subterminal” either :-(
By: Andrew Khitsun (Andrew)
2012-06-26 23:35:51 CDT (-0400)

Most of the soralia are in these dense rosettes on the tips of the lobs, some are semi-circles (labriform?), but many are circular, kind of like flat-top ice cream cones with icing or crushed peanuts on top. Some of the lobs are very short side lobes, though, coming up from the middle of the main lobe and immediately erupting into soralia that curles up, appearing to be on the top surface of the main lobe. I’ve found (very few) soralia that are actually sitting smack on the top surface of the lobe, but it seems more like an anomaly. Maybe those short side lobes aren’t considered lobes at all, but just a stem for the soralia?

Yeah, I would’ve gone another way
By: Jason Hollinger (jason)
2012-06-26 01:49:39 CDT (-0400)

Labriform soralia don’t really look like “lips” to me, either. But the critical thing here is whether all the soralia are on the margin, or whether some are in the center of the lobes. I have a hard time deciding with these. There are so many soralia in the second photo, for example(!), who’s to say?? I’ve seen photos of P. melanchra somewhere (probably Sharnoff’s) which clearly showed some laminal soralia… not just “subterminal”. (I think subterminal strictly means “not quite terminal”, not “underneath the tips”. Hypotrachyna species frequently are described as having subterminal pustules or soralia, and they never have these structures underneath.)

Physciella chloantha?
By: Andrew Khitsun (Andrew)
2012-06-25 22:05:36 CDT (-0400)

I’ve found more of these in the area, and it seems to me that they have lots of labriform soralia, suggesting P. chloantha.
Yet on the other hand, I never fully understood term “labriform” (just like most of the rest of the lichen terms :-) The soralia on these are on the bottom of upturned lobe tips, which should qualify them to be called “subterminal” – characteristic of P. melanchra.
Yet on the other hand, it’s exactly what Brodo and Sharnoff show for P. chloantha. Brrrr…

It’s all white below.
By: Andrew Khitsun (Andrew)
2012-05-29 20:09:52 CDT (-0400)

Some guy named Jason taught me to take samples :-)

By: Jason Hollinger (jason)
2012-05-29 14:35:51 CDT (-0400)

Does this resemble Phaeophyscia pusilloides from above to you, as well? Are there differences in lobe shape or something else you use to help suggest Physciella? (Or do you just check the lower surface of every one like I do!)

Nothing to brag about,
By: Andrew Khitsun (Andrew)
2012-05-28 22:00:51 CDT (-0400)

but I decided to upload these photos, since there aren’t many of this species on MO.

Created: 2012-05-28 21:49:44 CDT (-0400)
Last modified: 2014-06-29 19:46:17 CDT (-0400)
Viewed: 127 times, last viewed: 2018-03-04 16:08:11 CST (-0500)
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