Lichen are unique organisms made up of a combination of fungi and algae that are symbiotic, supporting each other.
The algae makes food through photosynthesis, which helps the fungi. In return, the fungi provide structure and retain moisture for the algae. Together, they form a self-sufficient partnership.
Lichen can grow on non-living things like rocks, powerlines, or fences but are often found on tree bark.
Trees that grow slowly tend to have more lichen on their trunks and branches. Faster-growing trees produce new growth rings each year, causing the bark to expand and any lichen on the surface to fall off. Slower-growing trees don’t expand their bark as much, allowing more lichen to grow.
Identification
There are many types of lichen around the world, with a wide range of textures and colors. Some lichen form long, ornate structures up to two inches tall. Others create small cup-like shapes or grow flat like leaves.
Different species of lichen can often be found in the same area, looking like a colorful coral reef. Lichen colors often become more vibrant after it rains.
A common lichen you may find in the environment is the cracked-shield lichen,Parmelia sulcata. It is light blue, almost white, with a flat, bark-like texture.
Another common lichen found in Texas is the slender orange-bush,Teloschistes exillis, which is bright orange and grows very low, sometimes blending in with the rocks.
Management
Lichen are self-sustaining and do not harm trees or people. While some people remove lichen to improve aesthetics, this is only a temporary fix, as lichen may continue to grow over time. It’s best to leave them alone.
They provide food and shelter for many small animals and nesting material for birds like hummingbirds and warbling vireos. Throughout history, people have used lichen for food, dyes for clothing, and medicine. Many lichen are sensitive to pollution and if present, can indicate that air quality is good.
Orange/yellow colors in lichens indicate it contains usnic acid, a molecule supposedly used by the human body to convert consumed protein into muscle mass. Info in alt
Foraging Texas: Lichen www.foragingtexas.com/2007/07/lich...
#TheOutpost 🌱🌿🚶♂️🍄
#FungiFriends
09.03.2026 17:06
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was a "these two men and their parties are exactly the same so what does it matter, let's protest vote for Nader, lol"
12.03.2026 02:40
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if it’s gonna suck for everyone i very specifically want it to suck for farmers who absolutely knew better because trump fucked them over the first time
11.03.2026 20:09
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poor little guy, i'm glad he's okay
11.03.2026 18:46
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1989 I'm fifteen and my mother is in front of our television on her knees touching the screen as people knock down the Berlin Wall with sledgehammers and songs
11.03.2026 17:49
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The public display of virtue is vital if you want a virtuous society! This is why reactionaries/conservatives hate it, undermining civic virtue is essential to their authoritarian desires.
11.03.2026 17:31
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oh no! hope everyone's okay
11.03.2026 17:17
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it turns out extended time inside the widening gyre is bad
11.03.2026 16:26
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3/10, 1st Round: (2) Soul Asylum vs (15) Patty Loveless — March Sadness 90s Edition
Why oh why, @marchxness.bsky.social committee, must this be a 1st round matchup! One of these beautiful essays by @kathleenmrooney.bsky.social & @emilylauracosta.bsky.social will undeservedly bow out of the tournament this morning. Score is close, SO READ & VOTE NOW!
marchxness.com/1stround-sou...
11.03.2026 13:47
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Teasels set against a grey, cloudy sky
Teasels in winter.
#bloomscrolling #ClassicMono #nature #photography
11.03.2026 13:46
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The way to own it.
11.03.2026 14:10
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the @lawrence-miles.bsky.social Monster Mash insight...we've never heard the actual "Monster Mash."
11.03.2026 14:09
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A: You know, it’s at times like this, when I’m trapped in a Vogon airlock with a man from Betelgeuse, and about to die of asphyxiation in deep space that I really wish I’d listened to what my mother told me when I was young.
FORD: Why, what did she tell you?
A: I don’t know, I didn’t listen.
11.03.2026 10:39
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A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
11.03.2026 11:13
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GenAI being fundamentally based on a rejection of consent is obvious, but it's not as obvious that it destroys the inhibitions of the people who already reject consent.
It makes them act in public the way they used to only act when cornering their employees by the punch bowl or in their office
11.12.2025 09:55
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i've ended up just buying my high schooler texts for his classes, it's so frustrating to have to have *everything* online and at least this way he has some sort of respite
11.03.2026 01:52
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don't believe it'll matter to him unless it affects him personally- like his house, his golf clubs, himself.
10.03.2026 23:34
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To those who never stop asking well, what do you expect the Democrats to DO???
Stop doing this for starters.
10.03.2026 20:56
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10.03.2026 17:31
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Here's my Blooski statement that Sen. Kennedy calls hyperbolic. I will defend natural law until the day I die, Senator. People's rights come from their humanity, not their government. If ordered to act unethically, you should always refuse. Do Republicans now disagree?
10.03.2026 18:13
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A broken, blue heart
With a broken Blue Bomber heart, I am no longer the voice of Mega Man.
I was asked to return for Mega Man: Dual Override, but only on the condition I work without the protections of a union contract.
10.03.2026 16:58
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“Girls Just Want to Have Fun” peaks at #2 today in ‘84
“We got every racial group of girl—mixed, Spanish, white, black, Asian,” said Lauper, “so that every little girl who looked at that video would .. understand that every young woman, older woman, every person is entitled to a joyful experience.”
10.03.2026 18:12
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I saw a group post this and have to say that it is amazing.
10.03.2026 17:58
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Reality show where posters who romanticize back-breaking labor do it full-time for a year.
10.03.2026 15:27
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Wide eyed black puppy, looking at your soul
Who needs some afternoon McLovin?
10.03.2026 16:51
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The Pokémon Company Is Actively Recruiting PhD Holders With Backgrounds in Ecology to Work in Tokyo
Special research.
I know there are *so* many of you evolution and ecology fiends out there who'd be perfect!! "The Pokémon Company is specifically looking for those with research experience in animal and plant ecology, with Japanese and English language skills on top." (IGN) nordic.ign.com/pokemon-poko... #SciComm 🧪
10.03.2026 14:31
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‘Hey’ came before ‘hi,’ and ‘hi' came before ‘hello.’
‘Hi’ is most likely a variant of ‘hey.’
‘Hello’ is not related to either.
Goodbye.
10.03.2026 16:17
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small joyful thing: i have several bluebonnet volunteers from the last year of planted bluebonnets
10.03.2026 14:18
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in case you've never seen it, this is Roger Ebert on The Mummy
10.03.2026 14:02
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