Anthony Speca | Aspen Ecology
@aspenecology.com
Lichen surveying, consultancy, training and education. County Lichen Recorder for Suffolk. Posts mainly about lichens, and occasionally other life-forms, especially if they're overlooked. Rocks now and then, too. Founder @anthonyspeca.bsky.social.
November 24, 2025 at 6:24 PM
November 16, 2025 at 3:52 PM
Similar figures here at Villa Speca, too.
November 15, 2025 at 8:19 PM
Similar figures here at Villa Speca, too.
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November 15, 2025 at 5:24 PM
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November 15, 2025 at 4:50 PM
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November 14, 2025 at 3:43 PM
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November 14, 2025 at 3:31 PM
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November 13, 2025 at 3:31 PM
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November 13, 2025 at 1:47 PM
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I'll be curious to hear what you find. I wouldn't like to continue to depend on an unreliable morphological character!
November 3, 2025 at 8:26 AM
I'll be curious to hear what you find. I wouldn't like to continue to depend on an unreliable morphological character!
Sometimes K+ reaction of parietin is described as 'purple' or 'red-purple' rather than 'red' or 'crimson'. But (in Britain at least) there are no Caloplaca sensu lato species that react C+, apart from one Blastenia and one Kuettlingeria, both extremely unusual and rarely recorded. Typo in your key?
November 2, 2025 at 11:03 PM
Sometimes K+ reaction of parietin is described as 'purple' or 'red-purple' rather than 'red' or 'crimson'. But (in Britain at least) there are no Caloplaca sensu lato species that react C+, apart from one Blastenia and one Kuettlingeria, both extremely unusual and rarely recorded. Typo in your key?
Yes, arguably so: I was led to F oasis by what seemed to be thalline margins, but I can be convinced otherwise. As for the other: I myself have never seen M/P albescens with endolithic thallus and greatly dispersed apothecia: normally thick or even mounded epilithic thallus and clustered apothecia.
November 2, 2025 at 10:51 PM
Yes, arguably so: I was led to F oasis by what seemed to be thalline margins, but I can be convinced otherwise. As for the other: I myself have never seen M/P albescens with endolithic thallus and greatly dispersed apothecia: normally thick or even mounded epilithic thallus and clustered apothecia.
Thanks, Peter. Caloplaca (Gyalolechia) flavovirescens is more strongly associated with calcareous substrates. Perhaps begin with Athallia holocarpa as a hypothesis and work from there? (Not sure what you mean by C+ purple? I think you said it had a K+ reaction, presumably crimson?)
November 2, 2025 at 10:37 PM
Thanks, Peter. Caloplaca (Gyalolechia) flavovirescens is more strongly associated with calcareous substrates. Perhaps begin with Athallia holocarpa as a hypothesis and work from there? (Not sure what you mean by C+ purple? I think you said it had a K+ reaction, presumably crimson?)
Fantastic combination! Thanks, Peter. Did you consider Myriolecis (Polyozosia) dispersa and Flavoplaca (Caloplaca) oasis? I may be deceived due to the distance in the photo. But your lichens seem to me more likely to be those two species, at least at first glance.
November 2, 2025 at 10:14 PM
Fantastic combination! Thanks, Peter. Did you consider Myriolecis (Polyozosia) dispersa and Flavoplaca (Caloplaca) oasis? I may be deceived due to the distance in the photo. But your lichens seem to me more likely to be those two species, at least at first glance.