North America Native Plant

Strangospora Lichen

Botanical name: Strangospora microhaema

USDA symbol: STMI9

Habit: lichen

Native status: Native to North America  

Synonyms: Biatorella microhaema Norman (BIMI4)   

Strangospora Lichen: A Mysterious Native Find in North American Gardens Have you ever noticed tiny, colorful patches growing on rocks, tree bark, or soil in your garden and wondered what they might be? You might have encountered a fascinating organism that’s neither plant nor animal – a lichen! Today, we’re ...

Strangospora Lichen: A Mysterious Native Find in North American Gardens

Have you ever noticed tiny, colorful patches growing on rocks, tree bark, or soil in your garden and wondered what they might be? You might have encountered a fascinating organism that’s neither plant nor animal – a lichen! Today, we’re diving into the world of Strangospora microhaema, commonly known as strangospora lichen, a native North American species that quietly contributes to our local ecosystems.

What Exactly is Strangospora Lichen?

Before we get too deep into the details, let’s clear up what we’re dealing with here. Strangospora lichen isn’t actually a plant at all – it’s a lichen! Lichens are remarkable partnerships between fungi and algae (and sometimes bacteria) that work together as a single organism. Think of it as nature’s ultimate roommate situation, where everyone benefits from the arrangement.

Strangospora microhaema belongs to the crustose lichen family, which means it forms a crust-like growth that’s tightly attached to whatever surface it calls home. You might also see it referred to by its scientific synonym, Biatorella microhaema Norman, in older botanical references.

Where You’ll Find This Native Treasure

This little lichen is native to North America, making it a true local resident that’s been quietly doing its thing long before our gardens existed. While specific distribution details aren’t widely documented, native lichens like this one typically have established themselves across various regions where conditions suit their particular needs.

Is Strangospora Lichen Good for Your Garden?

Here’s the wonderful thing about discovering lichens in your garden – they’re generally excellent indicators of good air quality! Unlike many plants that can struggle in polluted environments, lichens are quite sensitive to air pollution. So if you spot strangospora lichen hanging out in your space, it’s actually a positive sign that your local air quality is pretty decent.

Lichens also play several beneficial roles in garden ecosystems:

  • They help break down rock and create soil over time
  • Some provide food sources for wildlife
  • They add natural, subtle beauty to garden surfaces
  • They require no maintenance from you whatsoever

How to Identify Strangospora Lichen

Identifying specific lichen species can be tricky, even for experts, and strangospora lichen is no exception. As a crustose lichen, it will appear as a thin, crust-like growth that seems almost painted onto its surface. However, without detailed microscopic examination and chemical testing, it’s nearly impossible for the average gardener to definitively identify this particular species.

If you’re curious about lichens in your garden, your best bet is to:

  • Take clear photos of any lichen growth you find
  • Note what surface they’re growing on
  • Contact your local extension office or botanical society
  • Consider joining a local naturalist group that studies lichens

The Hands-Off Approach to Lichen Appreciation

Here’s the best part about having lichens in your garden – you don’t need to do anything at all! These remarkable organisms are completely self-sufficient. They create their own food through photosynthesis (thanks to their algae partners), absorb moisture and nutrients directly from the air, and grow incredibly slowly without any input from you.

In fact, trying to help lichens often does more harm than good. They’re sensitive to disturbance and changes in their environment, so the kindest thing you can do is simply leave them alone to do their thing.

A Quiet Marvel in Your Garden

While strangospora lichen might not be the showstopper that catches every visitor’s eye, it represents something pretty special – a native organism that’s been quietly contributing to North American ecosystems for potentially centuries. These tiny partnerships between fungi and algae remind us that some of the most interesting life in our gardens happens on a scale we might easily overlook.

So next time you’re wandering through your garden, take a moment to appreciate any crusty, colorful patches you might spot on rocks, tree bark, or other surfaces. You might just be looking at strangospora lichen or one of its many fascinating relatives, all doing their part to keep our local ecosystems healthy and balanced.

Strangospora Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Acarosporaceae Zahlbr.

Genus

Strangospora A. Massal. - strangospora lichen

Species

Strangospora microhaema (Norman) R. Anderson - strangospora lichen

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