North America Native Plant

Lecidella Chodatii

Botanical name: Lecidella chodatii

USDA symbol: LECH17

Habit: lichen

Native status: Native to North America  

Lecidella chodatii: The Quiet Champion of Clean Air in Your Garden Have you ever noticed small, pale patches on tree bark in your garden and wondered what they might be? You might be looking at Lecidella chodatii, a fascinating lichen that’s actually doing some pretty amazing work right under your ...

Lecidella chodatii: The Quiet Champion of Clean Air in Your Garden

Have you ever noticed small, pale patches on tree bark in your garden and wondered what they might be? You might be looking at Lecidella chodatii, a fascinating lichen that’s actually doing some pretty amazing work right under your nose. While it might not be the showiest member of your garden community, this humble organism deserves recognition for what it brings to your outdoor space.

What Exactly Is Lecidella chodatii?

Let’s clear up any confusion right away – Lecidella chodatii isn’t a plant you can buy at your local nursery. It’s a lichen, which is actually a remarkable partnership between a fungus and algae (or sometimes cyanobacteria) living together in perfect harmony. Think of it as nature’s ultimate roommate situation, where both parties benefit from the arrangement.

This particular lichen appears as small, crusty patches with a pale gray to whitish coloration. It’s what scientists call a crustose lichen, meaning it forms a thin, crusty layer that’s tightly attached to whatever surface it’s growing on – usually tree bark.

Where You’ll Find This North American Native

Lecidella chodatii is native to North America and can be found across temperate regions of the continent. It’s particularly fond of deciduous trees and tends to show up in areas with good air quality – which brings us to one of its most impressive qualities.

Why This Lichen Is Actually a Garden Hero

Here’s where things get exciting: Lecidella chodatii is what we call a bioindicator. This means its presence tells you something important about your local environment. Lichens are notoriously sensitive to air pollution, so when you spot this little guy thriving in your garden, it’s essentially giving you a thumbs up about your air quality.

While it won’t attract pollinators like flowering plants (lichens don’t produce flowers), it does contribute to your garden’s ecosystem in other ways:

  • Provides microhabitat for tiny insects and other small creatures
  • Adds to the overall biodiversity of your garden
  • Acts as a natural air quality monitor
  • Creates subtle textural interest on tree bark

How to Identify Lecidella chodatii

Spotting this lichen requires a bit of detective work, but it’s quite rewarding once you know what to look for:

  • Location: Look on the bark of deciduous trees, particularly in areas with dappled sunlight
  • Appearance: Small, pale gray to whitish crusty patches
  • Texture: Firmly attached to bark with a somewhat powdery or granular surface
  • Size: Individual patches are typically small, though they may merge to form larger colonies

Is Lecidella chodatii Beneficial for Your Garden?

Absolutely! While you can’t plant it or control where it grows, having Lecidella chodatii in your garden is definitely a good sign. Its presence indicates:

  • Clean air quality in your area
  • A healthy, balanced ecosystem
  • Mature trees that provide suitable habitat
  • Low levels of air pollution

Creating Conditions Where Lichens Thrive

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

  • Maintain mature trees: Older trees with established bark provide the best substrate for lichens
  • Avoid chemical sprays: Pesticides and fungicides can harm these sensitive organisms
  • Reduce air pollution: Use environmentally friendly practices in your garden and encourage others to do the same
  • Be patient: Lichens grow slowly and appear when conditions are right

A Word of Appreciation

The next time you’re walking through your garden, take a moment to appreciate these quiet champions. Lecidella chodatii and other lichens might not have the flashy flowers or dramatic foliage that catch our attention, but they’re working hard to indicate the health of our environment. In a world where air quality is increasingly important, having these natural monitors in our gardens is truly something to celebrate.

Remember, if you’re lucky enough to have Lecidella chodatii in your garden, consider it a badge of honor – you’re providing habitat for one of nature’s most interesting partnerships while maintaining an environment clean enough for these sensitive organisms to thrive.

Lecidella Chodatii

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Lecanoraceae Körb.

Genus

Lecidella Körb. - lecidella lichen

Species

Lecidella chodatii (Sampaio) Knoph & Leuckert

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