Observation 117039: Cyanobacteria

When: 2012-09-16

Collection location: Pine Cliff State Natural Area, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

29% (1)
Recognized by sight
29% (1)
Recognized by sight
29% (1)
Recognized by sight
57% (1)
Eye3 Eyes3
Used references: ID provided by Jim Bennett

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I won’t tell them
By: Jason Hollinger (jason)
2012-11-17 18:43:16 EST (-0500)

I’ve no clue what this thing is. The fact that it’s never really greenish at all (even when wet) suggests that it might not have algae in it. Maybe there’s some sort of mold(?) that can subsist off of decaying Lepraria? But for comparison, check out Spilonema, Ephebe and Polychidium (all dwarf-filamentous black-brown lichens). Obviously look for apothecia in the future, as well. (For example, Polychidium muscicola does produce tiny reddish disk-shaped apothecia relatively commonly, you just have to really look for them. Not sure about the other two.)

That’s right – I hope Bryophyta doesn’t sue me for passing them over :-)
By: Andrew Khitsun (Andrew)
2012-11-17 17:32:16 EST (-0500)

There are no leaves, and it soesn’t appear to be branching. It’s just a bunch of filaments, and they’re black when wet and very dark brown (or appear so) when dry. These things are pretty common on Lepraria in shady, moist crevices and under sandstone overhangs.

You’ve got it pretty well bracketed
By: Jason Hollinger (jason)
2012-11-17 16:58:32 EST (-0500)

But you left out Bryophyta. I guess you could tell for sure that it has no leaves under the 4x scope? Is it a mass of black filaments? Or does it look more like a really finely-branched tiny bush? Is there any hue to it under the microscope, say a greenish tint? How about when wet, does it change at all?

Help needed.
By: Andrew Khitsun (Andrew)
2012-11-17 16:37:38 EST (-0500)

The “beast” in question here is black woolly stuff covering Lepraria. Under the microscope it looks like a cleaning pad that’s just been used to clean ricotta container, where “ricotta” is Lepraria soredia balls.

Created: 2012-11-17 16:29:00 EST (-0500)
Last modified: 2014-11-09 12:43:51 EST (-0500)
Viewed: 34 times, last viewed: 2017-08-20 02:21:09 EDT (-0400)
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