North America Native Plant

Strigula Burmudana

Botanical name: Strigula burmudana

USDA symbol: STBU3

Habit: lichen

Native status: Native to North America  

Strigula burmudana: A Mysterious Native Lichen Worth Knowing If you’ve ever wondered about those crusty, colorful patches you sometimes spot on tree bark or rocks, you might have encountered a lichen! Today, we’re diving into the world of Strigula burmudana, a native North American lichen that’s as fascinating as it ...

Strigula burmudana: A Mysterious Native Lichen Worth Knowing

If you’ve ever wondered about those crusty, colorful patches you sometimes spot on tree bark or rocks, you might have encountered a lichen! Today, we’re diving into the world of Strigula burmudana, a native North American lichen that’s as fascinating as it is elusive.

What Exactly Is Strigula burmudana?

Let’s start with the basics: Strigula burmudana isn’t actually a plant at all! It’s a lichen, which means it’s a unique partnership between a fungus and an algae (or sometimes a cyanobacteria). Think of it as nature’s ultimate roommate situation – the fungus provides structure and protection, while the algae handles the food production through photosynthesis. Pretty clever, right?

This particular lichen is native to North America, making it a legitimate part of our natural heritage. While it might not have the showy flowers or dramatic foliage we typically associate with garden plants, it plays its own important role in our ecosystems.

Geographic Distribution

Strigula burmudana calls North America home, though the specific details of its range remain somewhat mysterious to researchers and gardeners alike. Like many lichens, it likely has specific habitat preferences that determine where you might encounter it in the wild.

Is This Lichen Beneficial for Your Garden?

Here’s where things get interesting! While you can’t exactly plant Strigula burmudana like you would a tomato or a rose bush, having lichens like this one show up naturally in your garden is actually a fantastic sign. Lichens are incredibly sensitive to air pollution, so their presence indicates that your local air quality is pretty good.

If you do spot lichens in your garden, consider yourself lucky. They:

  • Indicate healthy air quality in your area
  • Add natural texture and visual interest to tree bark and rock surfaces
  • Contribute to the overall biodiversity of your garden ecosystem
  • Require absolutely zero maintenance from you

How to Identify Lichens in Your Garden

Identifying specific lichen species like Strigula burmudana can be tricky, even for experts. However, you can learn to recognize lichens in general by looking for:

  • Crusty, leafy, or branching growths on tree bark, rocks, or soil
  • Colors ranging from gray and white to bright orange, yellow, or green
  • Growth patterns that seem painted onto surfaces rather than growing up from them
  • Textures that can be smooth, bumpy, or intricately branched

Supporting Lichens in Your Landscape

The best thing you can do for lichens like Strigula burmudana is simply to leave them alone! Avoid using harsh chemicals or pressure washing areas where lichens are growing. These gentle organisms are doing their own thing quite successfully without any help from us.

If you want to create a lichen-friendly environment:

  • Minimize the use of pesticides and herbicides
  • Avoid disturbing natural bark and rock surfaces
  • Plant native trees and shrubs that provide suitable surfaces for lichen growth
  • Be patient – lichens grow very slowly, sometimes just millimeters per year

The Bottom Line

While Strigula burmudana might not be the showstopper you add to your shopping list at the garden center, it represents something pretty special: a native organism that’s been quietly doing its job in North American ecosystems for countless years. If you’re lucky enough to have lichens in your garden, take a moment to appreciate these remarkable partnerships between fungi and algae. They’re living proof that sometimes the most interesting garden residents are the ones that show up on their own!

Strigula Burmudana

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Sphaeriales

Family

Strigulaceae A.B. Frank

Genus

Strigula Fr. - strigula lichen

Species

Strigula burmudana (Nyl.) R.C. Harris

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