peterbraubach.bsky.social
Thoracic pathologist, with a focus on ILD and transplant. Dad of 2 👱👱 (03/18, 08/21). Bakes bread 🍞. Cares for a garden 🌻. Bikes to work 🚲. Biodiversity enthusiast. Mainly thinking about lichens here.
2,382 posts
1,209 followers
1,090 following
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Ich kann mich nicht mehr erinnern. Bin der Anleitung in Lutz Geißlers Buch gefolgt.
Damals habe ich erst meinen 2 Versuch akzeptiert. Der 1. hat mir vom Geruch nicht zugesagt (war geschmacklich aber ok).
Den R2/W2 (je Ro U. Weizen) habe ich jetzt schon 5j+ und nie wieder neu spontan angesetzt.
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Sounds like an exciting plan!
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IKI- asci, microchemical reactions to C and K both -ve.
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That's absolutely fantastic😍 and definitely a child of its time (I see 1989).
The current equivalent would be "art of grossing - mindful sous vide".
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What is this about? I can think about many things but none make sense.
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... when keying it out with ITALIC I come to Verrucaria mimicrans, the description of which also fits pretty well.
It is described as "differing from V. muralis in the larger spores" which I think is funny because V. muralis was my initial guess when starting out.
So - what do you think?
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When keying this out I come to V. viridula with the German key (Wirth 2013) and the LGBI3 Verrucaria key.
It is mentioned that "the apex somewhat extended into a short beak" - I cannot appreciate that in my sample.
LGBI3 and italic are not congruent in the description of the involucrellum ...
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spores are large-ish approx. 27x15 µm
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Perithecia are partially immersed in a pit in the limestone pebble, they are dome shaped. The involucrellum is diverging form the perithecium in some cases and reaches about 1/2 of the perthecial diameter.
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Is there any way to change to scientific names? I have absolutely no clue about the vulgar names.
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I am relieved that I am not the only one travelling with a microscope (! @lilithelina.bsky.social). Unfortunately the compound hat to stay at home - we have a small trunk and 2 kids so only the stereo microscope was allowed to come with us.
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Thank you Sue.
I just noticed that there are several records on observation org. and those compare favorably.
observation.org/species/1829...
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On siliceous and limestone rocks and pebbles, or on concrete or brick, tolerant of shade, frequent and widely distributed. Distinguished by the small perithecia, small ascospores, and more or less conical involucrellum.
Not 100% sure about the "conical". Rest seems fitting.
What do you think?
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Same results with the ITALIC 8 key and the Orange 2013 key. With Wirth 2013 no good result (stuck on 27/27* which bisects at spore measurements right around my mean)
How does it hold up?
LGBI3 spores for V. dolosa vs. my measurement:
mean lgt 15.9 vs 15.96 µm
mean wdh 7.0 vs. 6,85 µm
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Involucrellum not conspicuously thick in the upper part
102>103
Perithecia prominent, involucrellum well-developed, often conical; in terrestrial habitats
103>Verrucaria dolosa🎉
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Perithecia not immersed, or an involucrellum is present
98>99
Thallus various; perithecia smaller; terrestrial or freshwater habitats
99>100
... spore measurements (here it gets muddy)
100>101 rather than 104
Thallus various, but epinecral layer absent
101>102
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Involucrellum present
75>80
Ascospores more than 3 µm diam. (often much more)
(diametre here ~6-9 µm)
80>81
Thallus not subgelatinous
81>89
Thallus in section not composed of goniocysts
89>92
Ascospores smaller, average length no more than 25 µm
92>98
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Ascospores between 14-18 µm long, oval to ovoid.
Average ascospore length higher, at least 12 µm, extreme lengths as low as 9 µm
67>75
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Thallus mostly superficial (although sometimes thin) 39*>48
Thallus without densely pigmented areas, not maritime
48>58>59
Thallus various ... involucrellum present, not parasitic
59>64>67
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I was lucky to have someone wit a lot of experience point it out to me.
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Detail view of perithecial ostiole, alge and epinecral layer,
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Tolle Bilder. Vielen dank fürs Zeigen.
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Going from the number of likes and interactions on bsky for Verrucaria vs. Cladonia it is. Good that this is no important measure.
I'll just go to my corner with my microscope now.
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Das ist natürlich sehr schön - ich hatte ein bisschen auf eine alte Einfriedung die noch nie einen Kärcher gesehen hat spekuliert.
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Deinen Garten würde ich gerne mal sehen - wobei ich wahrscheinlich mehr zeit an der Gartenmauer verbringen würde, aber in einem schönen Garten wäre das natürlich besonders schön.
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There is again an high res (please zoom in!) image in my album: photos.app.goo.gl/SWVbZLbf6ZmZ...
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So, what do you think. Is attempting to ID Verrucaria #lichen a waste of time?
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Comparison of Verrucaria cf. muralis (left) and Verrucaria cf. fuscoatroides (right).
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Microscopic details.
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Beautiful! (I am a bit jealous).
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Microscopy. Italic: An apparently rather widespread, but still poorly known species described from Germany
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I added a high res panorama of Acrocordia conoidea: photos.app.goo.gl/SWVbZLbf6ZmZ...
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"surrounded by a perispore which appears verrucose in water, smooth in K" - I see the verrucated perispore but cannot fully replicate the smoothing in K.
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Large perithecia and Trentepohlia sp. photobiont.