North America Native Plant

Flavoparmelia Lichen

Botanical name: Flavoparmelia concreta

USDA symbol: FLCO

Habit: lichen

Native status: Native to North America  

Synonyms: Parmelia concreta Stizenb. (PACO37)   

Flavoparmelia Lichen: A Fascinating Native Species Worth Knowing If you’ve ever noticed pale, leaf-like growths on tree bark during your garden walks, you might have encountered the flavoparmelia lichen (Flavoparmelia concreta). This fascinating organism isn’t actually a plant at all, but rather a unique partnership between fungi and algae that ...

Flavoparmelia Lichen: A Fascinating Native Species Worth Knowing

If you’ve ever noticed pale, leaf-like growths on tree bark during your garden walks, you might have encountered the flavoparmelia lichen (Flavoparmelia concreta). This fascinating organism isn’t actually a plant at all, but rather a unique partnership between fungi and algae that creates something entirely special in our North American landscapes.

What Exactly Is Flavoparmelia Lichen?

Flavoparmelia concreta, commonly known as flavoparmelia lichen, belongs to an incredible group of organisms called lichens. Think of lichens as nature’s ultimate roommates – a fungus and an alga living together in perfect harmony. The fungus provides structure and protection, while the alga produces food through photosynthesis. It’s a win-win relationship that has been working beautifully for millions of years!

This particular lichen is native to North America and was previously known by the scientific synonym Parmelia concreta. You’ll find it naturally occurring across various regions of the continent, particularly in areas with clean air quality.

Identifying Flavoparmelia Lichen

Spotting flavoparmelia lichen is like finding nature’s own decorative medallions scattered throughout the landscape. Here’s what to look for:

  • Pale greenish-gray to slightly yellowish coloration
  • Foliose (leaf-like) structure with distinct lobes
  • Grows flat against tree bark, particularly on deciduous trees
  • Smooth, somewhat glossy appearance when moist
  • Size ranges from small patches to larger colonies several inches across

Is Flavoparmelia Lichen Beneficial in Your Garden?

While you can’t exactly plant flavoparmelia lichen like you would a flowering perennial, its presence in your landscape is actually a wonderful sign! Here’s why you should appreciate finding this lichen:

  • Air Quality Indicator: Lichens are extremely sensitive to air pollution, so their presence indicates clean, healthy air in your area
  • Ecosystem Support: They provide microhabitats for tiny insects and other small creatures
  • Natural Beauty: These living decorations add subtle texture and interest to tree bark
  • Educational Value: Perfect conversation starters about the fascinating world of symbiotic relationships

Creating Lichen-Friendly Conditions

You can’t plant lichens, but you can certainly create conditions that welcome them to your landscape naturally:

  • Maintain mature trees, especially native deciduous species
  • Avoid using chemical pesticides and air pollutants near your property
  • Preserve areas with partial shade and good air circulation
  • Be patient – lichens grow very slowly and establish naturally over time

A Note on Conservation

Remember that lichens like Flavoparmelia concreta are slow-growing and sensitive organisms. While they’re not rare, it’s important to observe and appreciate them without disturbing their growth. Never attempt to remove or transplant lichens, as this typically results in their death and disrupts the delicate ecosystem they support.

The Bottom Line

Flavoparmelia lichen represents one of nature’s most successful partnerships, quietly decorating our native trees while serving as a living barometer of environmental health. Rather than something to cultivate, think of it as a rewarding discovery – a sign that your local ecosystem is thriving and your air quality is good. The next time you spot these pale, leafy growths on tree bark, take a moment to appreciate the incredible biological cooperation happening right before your eyes!

Flavoparmelia Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Parmeliaceae F. Berchtold & J. Presl

Genus

Flavoparmelia Hale - flavoparmelia lichen

Species

Flavoparmelia concreta (Stizenb.) ined.? - flavoparmelia lichen

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