#xanthoria
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piotrgasiorowski.bsky.social
Xanthoria parietina – different degrees of pigmentation. Koziegłowy, Wielkopolska (western Poland).
#lichens #porosty #fungi #grzyby #lichenology #mycology #lichenfriends #fungifriends
February 2, 2026 at 9:11 PM
ianpaulsieren.bsky.social
Maritime Sunburst (Xanthoria parietina)
#Winter #lichens #fungi
A bright yellow Xanthoria colony growing on a fallen branch
February 1, 2026 at 10:15 PM
ianpaulsieren.bsky.social
Xanthoria, and Physconia
#Winter #lichens #fungi
A white Physconia lichen growing with a yellow Xanthoria lichen
January 30, 2026 at 8:52 AM
jeffontherock.bsky.social
Lichen on a stick (Xanthoria?). NWT, Canada.
#lichen #fungi #fungifriends
Photo of a small, bright orange lichen on a woody shrub branch. The lichen has a few dozen cheerio-like discs (the apothecia) which are deep orange inside and light orange on the rim. The lichen is in the shape of a small, “Hersheys Kiss” shaped mound.
January 25, 2026 at 12:17 AM
piotrgasiorowski.bsky.social
A few #lichens from my area. Physcia cf. aipolia (accompanied by Xanthoria parietina and others). Hypogymnia tubulosa, and Pseudevernia furfuracea (with Parmelia sulcata).
#porosty #fungi #grzyby #lichenfriends #fungifriends #lichenology #mycology
January 24, 2026 at 9:16 PM
jeffontherock.bsky.social
Our conifers are often completely covered in that species (regardless of nearby Xanthoria)
January 22, 2026 at 1:12 AM
broonhillda.bsky.social
also! next you see a xanthoria, look to the nearest tree. You'll probably catch a plastimatia glauca!
January 22, 2026 at 12:54 AM
broonhillda.bsky.social
Xanthoria and Xanthoparmelia are really common in Nitrogen heavy areas; is this area near a street or perhaps a farm?
January 22, 2026 at 12:52 AM
broonhillda.bsky.social
In the Americas we've started to lump Rusavskia with Xanthoria, and I do think you've a Xanthoria, but I'm not sure about elegans--elegans typically doesn't have a lumping growth. But I also can't find any others it would be, so! :)
January 22, 2026 at 12:41 AM
jeffontherock.bsky.social
@spribille.bsky.social is this Xanthoria parietina? Or possibly X. aureola? This is in eastern Newfoundland, on seaside cliffs. I know X. aureola is a European species(and X. parietina is common in NL), but the narrowish lobes had me wondering if it might be X. aureola.
January 21, 2026 at 4:01 AM
iandmedeiros.bsky.social
My guess for the "Xanthoria" is Polycauliona polycarpa.
January 19, 2026 at 2:14 PM
jeffontherock.bsky.social
Lichens on a stick. The white/grey lichen is a Hypogymnia and the yellow lichen is, I think, a Xanthoria (sunburst) lichen.
NWT, Canada. #lichen #fungi #fungifriends
Photo of lichens on a small shrub twig. A roundish lichen in the centre is white and grey. On either side of this lichen is a yellow lichen, growing along the length of the twig. The yellow lichen is covered in small, yellow discs (apothecia).
January 19, 2026 at 10:22 AM
jeffontherock.bsky.social
Lichens on a stick. The large orange #lichen is a sunburst lichen (Xanthoria sp). NWT, Canada. #fungi #fungifriends
Photo of several lichens growing on a small tree branch. The centre of the pic shows a roundish, bright orange lichen partially covered in orange discs (apothecia). Other lichen species around the orange lichen are yellow and grey in colour. Combined, the lichens almost completely cover the branch.
January 17, 2026 at 11:58 PM
stevieparsons.bsky.social
Some nice close-ups of that beautiful green Xanthoria parietina. On a wet and shady stile in Dorset. #lichen
Usually bright yellow, appears green in shady conditions because it reduces production of its yellow UV-protective pigment (parietin), allowing its green algal partner (Trebouxia) to show through.
January 17, 2026 at 7:29 PM
stevieparsons.bsky.social
Xanthoria parietina, usually bright yellow, appears green in shady conditions because it reduces production of its yellow UV-protective pigment (parietin), allowing its green algal partner (Trebouxia) to show through. On a wet stile in Dorset. #lichen
January 17, 2026 at 7:23 PM
sarahfaulkner.bsky.social
After heavy rain this morning the sun has come out so this gorgeous Common Sunburst Lichen seems perfect for #FungiFriday. 🍄 I love the orange cup-shaped apothecia.

Being new to #Lichen I was thrilled to find a fab Intro to Lichen on @bsbibotany.bsky.social YouTube channel: youtu.be/qJa1OlJ3vRs?...
Common Sunburst Lichen (Xanthoria parietina) growing on a concrete fence post. And close-up showing the apothecia - jam-tart like, orange coloured cup-shaped discs which are the sexual reproductive part of this lichen.
January 16, 2026 at 1:43 PM
robyaxley.bsky.social
I’ve just been doing a bit of lichen verifying on irecord, and have seen more photos of Xanthoria parietina than you would have thought possible…
A series of photos on screen of the yellow lichen Xanthoria parietina
January 14, 2026 at 6:23 PM
ikei.bsky.social
Xanthoria calcicola
🇳🇱 Oranje dooiermos

Both in big plaques and in circular form.
A bright orange yellow coloured lichen on a dark brick wall A bright orange yellow coloured lichen on a dark brick wall
January 13, 2026 at 8:22 PM
metalichen.bsky.social
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Black field with a macro image of a bright orange lichen Xanthoria in one of the corner. Little diagrams showing a structure of a lichen thallus with different layers in grey and green, a phylogenetic tree, and an alphafold generated structure of a protein. White text says "PhD position in Stockholm University / SciLifeLab. Lichen Biology, Symbiosis, Microbial Ecology & Evolution,Meta-omics Fully funded for 4 years. Start Apr-Sep 2026. Deadline for application: Feb 1st."
January 12, 2026 at 2:15 PM
lllichen.bsky.social
Yes, I’ve read that too. This lichen is, I think, a Stereocaulon sp. a rock foam, and likes to live in barren areas and on nutrient poor substrates - I think it looks like sea spray. Not sure if chemically it handles the salt in the same way as Xanthoria parietina but it seems to be doing well here.
January 12, 2026 at 11:31 AM
valere-de-lionsac.bsky.social
I've read that some lichens like Xanthoria parietina like the seawater's alkalinity and don't mind the salt.
January 11, 2026 at 1:17 PM
sarahsramblings.bsky.social
Busy start to the New Year so was delighted to finally able to get out on a 10 mile walk through the snow yesterday. Spotted one huddled ladybird on the gate post plus a single fungi and Yellow scales (Xanthoria parietina) lichen on a fallen tree I was negotiating climbing over #WildWebsWednesday
January 7, 2026 at 9:00 AM
followerofclay.bsky.social
It´s all about lichen!
Xanthoria parietina
#lichen #beauty #macro #photography
January 6, 2026 at 5:59 PM
clint-megathrust.bsky.social
Well, I got into the hobby by using one of those species ID apps so usually I just let the phone tell me since I'm not really an expert. Apparently it's yellow wall lichen (Xanthoria parietina).
January 6, 2026 at 2:06 AM
europesays.bsky.social
Latvia’s lichen of the year makes a comeback after 15 year hiatus / Article

https://www.europesays.com/2680484/

The yellow wall lichen Xanthoria parietina, commonly found in cities, has been chosen as the lichen of the…
Latvia's lichen of the year makes a comeback after 15 year hiatus / Article - EUROPE SAYS
The yellow wall lichen Xanthoria parietina, commonly found in cities, has been chosen as the lichen of the year for 2026, according to the Latvian Mycological
www.europesays.com
January 5, 2026 at 8:31 AM