Peter Braubach
@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.
Tonight I tried to replicate the "on-slide" test for usnic acid published by B. McCune 2024 with adaptations. Results look promising - further evaluation is necessary. #lichen
E. prunastri has a strong red reaction. Probably second compound reacting brown?
P. grisea is negative.
L. saligna + 1/
E. prunastri has a strong red reaction. Probably second compound reacting brown?
P. grisea is negative.
L. saligna + 1/
November 6, 2025 at 8:59 PM
Tonight I tried to replicate the "on-slide" test for usnic acid published by B. McCune 2024 with adaptations. Results look promising - further evaluation is necessary. #lichen
E. prunastri has a strong red reaction. Probably second compound reacting brown?
P. grisea is negative.
L. saligna + 1/
E. prunastri has a strong red reaction. Probably second compound reacting brown?
P. grisea is negative.
L. saligna + 1/
From a different playground...
November 2, 2025 at 10:39 PM
From a different playground...
Please take these of Gyalecta nidarosiensis.
October 31, 2025 at 6:23 PM
Please take these of Gyalecta nidarosiensis.
Paraphyes are strongly coherent and become free on K. Branched and sometimes (probably) anastomosing.
To the side I found one structure which might be a pycnidium with filiform conidia and one single spore, slightly bend and not attributable to the lichen with confidence... 3/4
To the side I found one structure which might be a pycnidium with filiform conidia and one single spore, slightly bend and not attributable to the lichen with confidence... 3/4
October 31, 2025 at 10:04 AM
Paraphyes are strongly coherent and become free on K. Branched and sometimes (probably) anastomosing.
To the side I found one structure which might be a pycnidium with filiform conidia and one single spore, slightly bend and not attributable to the lichen with confidence... 3/4
To the side I found one structure which might be a pycnidium with filiform conidia and one single spore, slightly bend and not attributable to the lichen with confidence... 3/4
I was not able to find asci in multiple apothecia. Going via exclusion I have tendencies towards M. peliocarpa.
Apothecia are dark coloured, blue-greenish on K and red on C. (cinereorufa-green? and gyrophoric acid).
2/4
Apothecia are dark coloured, blue-greenish on K and red on C. (cinereorufa-green? and gyrophoric acid).
2/4
October 31, 2025 at 10:04 AM
I was not able to find asci in multiple apothecia. Going via exclusion I have tendencies towards M. peliocarpa.
Apothecia are dark coloured, blue-greenish on K and red on C. (cinereorufa-green? and gyrophoric acid).
2/4
Apothecia are dark coloured, blue-greenish on K and red on C. (cinereorufa-green? and gyrophoric acid).
2/4
I have a mystery #lichen I've been working on for the last 3 days and would love some input on.
Its on unshaded mineral rich soil between Baeomyces rufus (sterile) and early colonizer moss on the edge of a earth heap.
Small black apothecia on brown thallus. I am thinking Micarea sp.; however... 1/4
Its on unshaded mineral rich soil between Baeomyces rufus (sterile) and early colonizer moss on the edge of a earth heap.
Small black apothecia on brown thallus. I am thinking Micarea sp.; however... 1/4
October 31, 2025 at 10:04 AM
I have a mystery #lichen I've been working on for the last 3 days and would love some input on.
Its on unshaded mineral rich soil between Baeomyces rufus (sterile) and early colonizer moss on the edge of a earth heap.
Small black apothecia on brown thallus. I am thinking Micarea sp.; however... 1/4
Its on unshaded mineral rich soil between Baeomyces rufus (sterile) and early colonizer moss on the edge of a earth heap.
Small black apothecia on brown thallus. I am thinking Micarea sp.; however... 1/4
We have this nice bubble bath toy. Unfortunately it stopped working and the screws seem to cemented in. I cannot open it 😭.
October 31, 2025 at 9:32 AM
We have this nice bubble bath toy. Unfortunately it stopped working and the screws seem to cemented in. I cannot open it 😭.
Developing stain with Lugol's. Hemiamyloid reaction in the hymenium - light blue turning reddish.
October 28, 2025 at 10:49 PM
Developing stain with Lugol's. Hemiamyloid reaction in the hymenium - light blue turning reddish.
I re-printed the ballstage base in TPU. PLA on PLA was too slippery. Also I bought some lead balls for ballast. The prototype is filled with sand which sometimes does not shift and the stage stays unstable.
Eventually I want to cover the base in cork to pin samples.
#3Dprint #microscopy
Eventually I want to cover the base in cork to pin samples.
#3Dprint #microscopy
October 28, 2025 at 9:31 PM
I re-printed the ballstage base in TPU. PLA on PLA was too slippery. Also I bought some lead balls for ballast. The prototype is filled with sand which sometimes does not shift and the stage stays unstable.
Eventually I want to cover the base in cork to pin samples.
#3Dprint #microscopy
Eventually I want to cover the base in cork to pin samples.
#3Dprint #microscopy
A prototype for a 3d printed ball stage for the stereomicroscope. Turned out larger than I expected it to be - does not run as smoothly as the commercial one - but I'm happy for the first try. It rotates around a centre 15 mm above the plate
October 28, 2025 at 5:44 PM
A prototype for a 3d printed ball stage for the stereomicroscope. Turned out larger than I expected it to be - does not run as smoothly as the commercial one - but I'm happy for the first try. It rotates around a centre 15 mm above the plate
Some technicalities. I had good experience with Olympus compatible c-mount camera adapters from China/Aliexpress to build up confidence in "third party" optics.
Now I have tried new eyepieces for my stereo microscope. A pair of 10x/25 to replace my 10x/22. These work well*
Now I have tried new eyepieces for my stereo microscope. A pair of 10x/25 to replace my 10x/22. These work well*
October 27, 2025 at 2:07 PM
Some technicalities. I had good experience with Olympus compatible c-mount camera adapters from China/Aliexpress to build up confidence in "third party" optics.
Now I have tried new eyepieces for my stereo microscope. A pair of 10x/25 to replace my 10x/22. These work well*
Now I have tried new eyepieces for my stereo microscope. A pair of 10x/25 to replace my 10x/22. These work well*
Details of hymenium with spores, apothecial margin and photobiont in the granular thallus.
October 18, 2025 at 9:21 PM
Details of hymenium with spores, apothecial margin and photobiont in the granular thallus.
Microchemical reaction to C+ (positive, red and very fast)
I like to do them on camera and take pictures with a foot pedal (or take a movie).
I like to do them on camera and take pictures with a foot pedal (or take a movie).
October 18, 2025 at 9:21 PM
Microchemical reaction to C+ (positive, red and very fast)
I like to do them on camera and take pictures with a foot pedal (or take a movie).
I like to do them on camera and take pictures with a foot pedal (or take a movie).
Agonimia tristicula #lichen on bryophytes over hard limestone.
I still have to find this one with perithecia, my sample is unfortunately sterile.
I still have to find this one with perithecia, my sample is unfortunately sterile.
October 18, 2025 at 8:42 PM
Agonimia tristicula #lichen on bryophytes over hard limestone.
I still have to find this one with perithecia, my sample is unfortunately sterile.
I still have to find this one with perithecia, my sample is unfortunately sterile.
Microscopy details.
October 16, 2025 at 7:02 PM
Microscopy details.
The spores are a bit too small for L. erysibe so I will look into this again. I'd be happy to hear your thoughts.
October 13, 2025 at 9:08 PM
The spores are a bit too small for L. erysibe so I will look into this again. I'd be happy to hear your thoughts.
I think this is Lecania erysibe #lichen on a limestone boulder.
Some small yellow nightmare parasitizes on the green blastidiate crust (however I have not collected this one yet).
Some small yellow nightmare parasitizes on the green blastidiate crust (however I have not collected this one yet).
October 13, 2025 at 9:08 PM
I think this is Lecania erysibe #lichen on a limestone boulder.
Some small yellow nightmare parasitizes on the green blastidiate crust (however I have not collected this one yet).
Some small yellow nightmare parasitizes on the green blastidiate crust (however I have not collected this one yet).