Observation 164810: Verrucaria marmorea (Scop.) Arnold
When: 2014-04-19
No herbarium specimen

Notes: I don’t even know if this is lichen! I photographed it on a rock, presumably limestone, at Blevins Gap Land Trust Preserve, Huntsville, Alabama. Rich woods, very rocky, fairly moist.

Proposed Names

27% (1)
Recognized by sight
28% (1)
Recognized by sight: I agree with zaca

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Magnifying the photos …
By: zaca
2014-05-17 03:03:28 CDT (-0500)

it is possible to see some round pits on the stone. Thus I infer that this could be an old thallus of Verrucaria marmorea, due to the colour.

By: Tim Martin (T Martin2010)
2014-05-16 21:54:39 CDT (-0500)

….it was rock, limestone as far as I can tell. Around here it is easy, it is either limestone or sandstone. Usually limestone.

By: Jason Hollinger (jason)
2014-05-08 18:19:34 CDT (-0500)

If this were bark, I’d say Arthonia cinnabarina… but I don’t what it could be if it’s on rock.

Created: 2014-05-07 16:23:47 CDT (-0500)
Last modified: 2014-05-17 03:20:04 CDT (-0500)
Viewed: 21 times, last viewed: 2016-10-27 03:17:37 CDT (-0500)
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