Observation 208168: Bacidina inundata (Fr.) Vězda

When: 2015-06-28

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

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

29% (1)
Recognized by sight
69% (1)
Recognized by sight: The occurrence on dolomite is unusual and threw me off, as well as not knowing if the habitat was near/under water. The white prothallus is also diagnostic.
Used references: Thomson 2003; new British flora
Based on microscopic features: Atypical spores 55×3, up to 12 septate, acicular; epithecium red/brown; epithecium green in K; hypothecium pale

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Jim, it’s nowhere near the water
By: Andrew Khitsun (Andrew)
2018-03-22 20:09:07 PDT (-0700)

instead, it’s on the Niagara Escarpment in the woods. Now, the wall is the wet one, facing the Lake Winnebago which is less than 50 yards from the wall in that spot. So there is plenty of moisture in the air and multiple seepages in the wall, but nothing like inundation.

I’ve checked Thomson briefly
By: Andrew Khitsun (Andrew)
2015-06-30 22:17:21 PDT (-0700)

13 species of Bacidia mentioned there grow either on trees or mossy rock or sandstone. I haven’t checked other features yet, and in my experience Thomson’s substrate assumptions turn out to be incorrect in light of more modern science.

That’s what I thought, too
By: Jason Hollinger (jason)
2015-06-30 09:13:55 PDT (-0700)

Yikes, there’s a lot of options according to CNALH. (I just looked at a species list searching for Bacidia in Wisconsin.)

I don’t know what the correct terminology for those young white, soft-rimmed apothecia. Maybe “byssoid”? (Like the rims of Byssoloma.)

By: zaca
2015-06-30 01:42:49 PDT (-0700)
Apothecia range from white-rimmed round ones
By: Andrew Khitsun (Andrew)
2015-06-29 18:07:58 PDT (-0700)

to pezizoid (I hope I use the right term here), and from light-red, almost orange, to very dark wine-red. On dolomite of Niagara Escarpment.

Created: 2015-06-29 17:54:16 PDT (-0700)
Last modified: 2018-03-22 20:09:08 PDT (-0700)
Viewed: 77 times, last viewed: 2018-03-23 19:43:00 PDT (-0700)
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