North America Native Plant

Fringed Lichen

Botanical name: Anaptychia bryorum

USDA symbol: ANBR15

Habit: lichen

Native status: Native to North America  

Synonyms: Anaptychia stippaea (Ach.) Nadv. (ANST13)   

Fringed Lichen: A Fascinating Natural Garden Visitor Have you ever noticed those crusty, leafy growths clinging to tree bark in your yard and wondered what they are? Meet the fringed lichen (Anaptychia bryorum), one of nature’s most interesting composite organisms that might already be calling your garden home – without ...

Fringed Lichen: A Fascinating Natural Garden Visitor

Have you ever noticed those crusty, leafy growths clinging to tree bark in your yard and wondered what they are? Meet the fringed lichen (Anaptychia bryorum), one of nature’s most interesting composite organisms that might already be calling your garden home – without any help from you!

What Exactly Is Fringed Lichen?

Here’s where things get wonderfully weird: fringed lichen isn’t actually a plant at all! It’s a fascinating partnership between a fungus and an algae (and sometimes bacteria too), living together in perfect harmony. Think of it as nature’s ultimate roommate situation – the fungus provides structure and protection, while the algae makes food through photosynthesis. Pretty cool, right?

Anaptychia bryorum is native to North America and can be found naturally establishing itself across temperate regions of the continent. You might also see it referred to by its scientific synonym, Anaptychia stippaea.

Spotting Fringed Lichen in Your Garden

Identifying fringed lichen is like developing a superpower for noticing the tiny wonders around you. Here’s what to look for:

  • Gray-green to brownish, leafy appearance that forms circular patches
  • Distinctive fringed or hair-like edges (cilia) along the lobe margins – this is where it gets its fringed common name
  • Typically grows on tree bark, rocks, or sometimes directly on soil
  • Forms rosette-like patterns that can spread several inches across
  • Feels somewhat papery or leathery to the touch

Is Fringed Lichen Good for Your Garden?

The short answer? Absolutely! While you can’t plant or cultivate fringed lichen (it does its own thing, thank you very much), having it appear naturally in your garden is actually a fantastic sign. Here’s why you should celebrate finding it:

  • Air quality indicator: Lichens are incredibly sensitive to air pollution, so their presence means you have clean air in your garden
  • Ecosystem health: They contribute to the complex web of life that makes gardens thrive
  • No harm to plants: Despite growing on tree bark, lichens don’t damage or parasitize their host plants
  • Natural beauty: They add subtle texture and interest to tree trunks and garden features

The Hands-Off Approach to Lichen Care

Here’s the beauty of fringed lichen – it requires absolutely zero effort from you! In fact, the best thing you can do is simply leave it alone. Lichens establish naturally when conditions are right, and they’re incredibly self-sufficient.

If you want to encourage lichens in your garden, focus on:

  • Maintaining good air quality (avoid excessive use of chemicals)
  • Preserving mature trees with interesting bark textures
  • Keeping some undisturbed areas in your landscape
  • Avoiding pressure washing or scrubbing areas where lichens grow

A Living Barometer in Your Backyard

Think of fringed lichen as your garden’s personal environmental health monitor. Its presence tells you that you’re doing something right – maintaining a space where sensitive organisms can thrive. Plus, once you start noticing lichens, you’ll begin to see them everywhere, turning every garden walk into a mini treasure hunt.

So the next time you spot those fringed, gray-green patches on your trees or rocks, take a moment to appreciate these remarkable organisms. They’re not just surviving in your garden – they’re quietly contributing to its health and complexity, one tiny partnership at a time.

Fringed Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Physciaceae Zahlbr.

Genus

Anaptychia Körb. - fringed lichen

Species

Anaptychia bryorum Poelt - fringed lichen

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA