North America Native Plant

Mycomicrothelia Lichen

Botanical name: Mycomicrothelia inaequalis

USDA symbol: MYIN2

Habit: lichen

Native status: Native to North America  

Understanding Mycomicrothelia Lichen: A Tiny Native Wonder in Your Landscape Have you ever noticed tiny, crusty growths on rocks or bark and wondered what they might be? You might have stumbled upon one of nature’s most fascinating partnerships – a lichen! Today, we’re diving into the world of Mycomicrothelia inaequalis, ...

Understanding Mycomicrothelia Lichen: A Tiny Native Wonder in Your Landscape

Have you ever noticed tiny, crusty growths on rocks or bark and wondered what they might be? You might have stumbled upon one of nature’s most fascinating partnerships – a lichen! Today, we’re diving into the world of Mycomicrothelia inaequalis, commonly known as mycomicrothelia lichen, a small but remarkable native species that calls North America home.

What Exactly Is Mycomicrothelia Lichen?

Before we get too excited about adding this to our garden wishlist, let’s clear something up: mycomicrothelia lichen isn’t a plant you can simply pop into your shopping cart at the local nursery. This tiny organism is actually a lichen – a unique partnership between a fungus and algae (or sometimes cyanobacteria) that work together in perfect harmony.

Think of lichens as nature’s original roommates who actually get along! The fungus provides structure and protection, while the algae whips up food through photosynthesis. It’s a win-win situation that’s been working for millions of years.

Where You’ll Find This Native Beauty

Mycomicrothelia inaequalis is native to North America, though specific details about its exact range aren’t widely documented in standard field guides. Like many lichens, it likely has particular preferences for its growing conditions and substrates.

Is This Lichen Beneficial in Your Garden?

While you can’t exactly plant mycomicrothelia lichen, having lichens like this one naturally occur in your landscape is actually a wonderful sign! Here’s why lichens are garden gold:

  • They’re excellent indicators of air quality – lichens are sensitive to pollution, so their presence suggests clean air
  • They add natural character and age to rocks, bark, and other surfaces
  • They’re part of the native ecosystem and support biodiversity
  • They require zero maintenance – nature’s ultimate low-maintenance groundcover!

How to Identify Mycomicrothelia Lichen

Identifying specific lichen species can be quite challenging, even for experts! Mycomicrothelia lichens are typically small and crustose, meaning they form a crust-like growth on their substrate. Without detailed morphological and chemical analysis, definitive identification often requires specialized knowledge and equipment.

If you’re curious about lichens in your landscape, look for:

  • Small, crusty or scaly growths on rocks, bark, or soil
  • Colors ranging from gray to brown, sometimes with tiny fruiting bodies
  • Growth that seems painted on to the surface

Creating a Lichen-Friendly Environment

While you can’t plant lichens directly, you can certainly encourage them! Here’s how to make your garden more welcoming to these fascinating organisms:

  • Maintain good air quality by avoiding excessive chemical sprays
  • Leave some natural surfaces undisturbed – old rocks, mature tree bark, and weathered wood
  • Be patient – lichens grow incredibly slowly, sometimes just millimeters per year
  • Resist the urge to clean every surface – what looks like dirt might be precious lichen habitat

The Bottom Line

Mycomicrothelia lichen might not be the showstopper annual you’re looking for, but it represents something equally valuable – the quiet, persistent beauty of native organisms that have called North America home for ages. If you’re lucky enough to spot lichens in your landscape, take a moment to appreciate these remarkable partnerships between fungi and algae.

Remember, the best gardens aren’t just about what we plant, but also about what we allow to flourish naturally. Sometimes the smallest residents – like a tiny lichen growing on an old fence post – tell the biggest stories about the health and history of our landscapes.

Mycomicrothelia Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Dothideales

Family

Arthopyreniaceae Walt. Watson

Genus

Mycomicrothelia Keissler - mycomicrothelia lichen

Species

Mycomicrothelia inaequalis (Fabre) D. Hawksw. - mycomicrothelia lichen

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