#punctelia

[lichenaday]

Punctelia subrudecta

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[stoptheworld-please]

[nature-travel-photography]

The Elegance of Punctelia - Author: WideEyes369

[blogbirdfeather]

Punctelia subrudecta

Lisboa/Portugal (25/03/2025)

[Nikon D7100; AF 105mm Micro-Nikkor F2,8]

[rebeccathenaturalist]

TBT this nice Punctelia lichen (maybe P. missouriensis?) I found in the northern Ozarks back in October. I really love the texture on this species.

[cedar-glade]

Unfortunately I can't get a good ID on it but you have a two choices based on the color and morph for that region. Since It appears to be on bark I would consider Flavoparmelia capereta as my preference the reasoning is the nonconsistant isidiate center and how smooth it is overall with know vein like folding, meaning I wouldnt consider moonlight hammered shield (Parmelia sulcata), or rough speckled sheild( Punctelia rudecta) but powdery axil bristle would be the only secondary option I could think of (Myelochroa aurulenta)

I wish I was better with moss to help you but I definitely need to memorize key features before I even try to get it down to genus. It almost looks like an anomadon but prob not knowing my luck lol

i was clearing out the memory card on my good camera and i found this very affectionate photo i took a little over a year ago, apparently somewhere in wisconsin. my pocket knife is about 4 or so inches across when unfolded…idk the actual species but it looks to me like a species of parmelia, the shield lichens. i have no memory of taking this but the artistic framing suggests ‘look at this big chungus’ and i have to agree 

[balthazarslostlibrary]

The same shield lichen, first after rain, and second two days after hot sunny weather. Lichens only photosynthesise when they have available water, and otherwise can go completely dry and dormant for months if needed.

Genus Punctelia, Speckled Shield Lichen, Aotearoa. Photo credit me.

[cedar-glade]

two dope ass macrolichens I got very excited about in a walnut tree last spring (55 dbh walnut 115 feet top to bottom which is the biggest black walnut i’ve ever climbed hidden in this valley in Mt. Airy forest in Cincinnati. )

I was excited because I don’t see these in Cincinnati though they are common in southern Ohio despite the fact. Really uncommon in city regions due to heat island issues low rainfall compared to past rain due to deforestation and climate change, and the classic air pollution problem. We got lucky, this walnut was in a valley and surrounded by forest, the tips were caked in one of these though the other was just pure luck to begin with. My first time seeing this species out of high quality habitat like Adams county Ohio or RRG region Kentucky.

Top is my favorite lichen, a somewhat variable species that appears on moss thats on dolomite, or moss thats on trees.

Shaggy-fringe Lichen, like even the apothecia are fringed!, when hydrated the thallus is an emerald green, its puffy sometimes and looks like a fringy tube lichen and sometimes the thallus looks thin like this picture, Anaptychia palmulata

Moondust Speckled Lichen with its dope apothecia large and in charge, Punctelia caseana

[indefenseofplants]

Rough speckled shield lichen (Punctelia rudecta) really enjoyed all that rain. #lichen #symbiosis #illinois #forest #foresthealth #ecology #trees #nature #outdoors #springrain #springiscoming #punctelia #fungi #algae #evolution

[thebashfulbotanist]

Punctelia bolliana can get to be a seriously big lichen! It’s pretty recognizable by its large, brown apothecia (the spore-bearing structures of the lichen). It’s preferred habitat is on bark in areas exposed to sun, such as this tree at the edge of a field. 

[dendroica]

Rough Speckled Shield Lichen, Punctelia rudecta (by me)

[lichenaday]

Punctelia borreri

Blinking speckleback lichen

This foliose lichen grows in rounded rosettes up to 10 cm in diameter. It has rounded, contiguous lobes which grow closely attached to the substrate. The upper surface is gray-green to place gray in color, and speckled with white, punctiform pseudocyphellae. It produces granular soredia out of those pseudocyphellae and out of capitate soralia. The lower surface is black toward the center and brown toward the lobe margins, with simple, black rhizines. It only very rarely produces apothecia which are bowl-shaped, and have a red-brown disc. P. borrei typically grows on the bark of deciduous trees in mild-temperate and humid climates. It is considered cosmopolitan as it is found pretty much all over. Also, here is a super cute historical drawing of it done in 1808 by Dawson Turner for its original description:

Future tattoo idea maybe?

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info: source | source | source

[lichenaday]

A tree near my house (Southern UK) is completely covered in all kinds of different lichens, which I frequently admire on my morning walks. This is the largest I can see (about 3-4 inches across) and I thought you may appreciate it.

Gorgeous! Ramalina AND Cetrelia (or Punctelia, I can't quite tell lol). A gorgeous pair! Plus everything else growing there. You must have pretty good air quality. Congrats!

[lichenaday]

Lichen and moss on branches of an old (cherry?) tree our neighbors cut down. There's another one still standing in their front yard and it's also covered in lichen and moss.

Whoa! That is a thick patch of Punctelia. Cherry trees and other cultivated Rosacea trees tend to host A LOT of lichens. I am not entirely sure why, but I think it has a lot to do with their slow growth and fairly neutral bark.

[cedar-glade]

Some super common macro lichens in the midwest you can readily learn. Generalized to mainly wood surface and not super generalized on rock.

Common Greenshield Lichen, Flavoparmelia caperata

vs

Punctelia rudecta, and recent split Punctelia missouriensis (see those white speckled lobes. during full developement and we see a different colored isidiate core. this is why it’s commonly known as the rough speckled shield ) (this concept can be seen in the lower specimen.) (The upper though developes consistently less isidiate core and instead has overlapping squamulobes which gives it a mealy look.) (Called Mealy Speckled Shield lichen.)

What isn’t as common is large thallus mats with proper apothecia developement. Its like a light blue core if it’s the case unlike moon glow lichen which has a brown apothecia core and smooth axle bristle which looks green when hydrated and has an orange like tint when dry. imishaga doesn’t seem to produce apothecia or an isidiate core while rough speckled can produce both though the apothecia are supposed to be small like seen above on this Quercus muehlenbergii

the green shield will be smooth, baltimore green shield is a rock species where as smooth(rare) and common are both on wood, not an isidiate display, and fully same colored thallus wet or dry.

the bottom picture is the two colored thallus of rough speckled sheild without an isidiate core that i put water on to see if i could get hydrated colors.

[lichenaday]

Punctelia reddenda

This gorgeous foliose lichen grows in rosettes up to 6 cm in diameter. The upper surface is gray-green to yellow-green with white, punctiform (point or dot like) pseudocyphella which turn into soralia which produce granular or nodular soredia. The lower surface is black toward the center and lightens to brown near the rounded margins of the overlapping lobes. P. reddenda grows on mossy tree trunks and rock in Africa, Macaronesia, North and South America, and Europe.

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info: source | source | source