North America Native Plant

Staurothele Monicae

Botanical name: Staurothele monicae

USDA symbol: STMO6

Habit: lichen

Native status: Native to North America  

Synonyms: Endocarpon monicae Zahlbr. (ENMO2)   

Discovering Staurothele monicae: A Mysterious North American Lichen Meet Staurothele monicae, one of nature’s quieter residents that you’ve probably walked past countless times without noticing. This humble lichen might not have the flashy appeal of a showy wildflower, but it plays its own important role in North American ecosystems. What ...

Discovering Staurothele monicae: A Mysterious North American Lichen

Meet Staurothele monicae, one of nature’s quieter residents that you’ve probably walked past countless times without noticing. This humble lichen might not have the flashy appeal of a showy wildflower, but it plays its own important role in North American ecosystems.

What Exactly Is Staurothele monicae?

Before we dive deeper, let’s clear up what we’re dealing with here. Staurothele monicae is a lichen – not a plant in the traditional sense, but rather a fascinating partnership between fungi and algae working together. You might also see it referred to by its scientific synonym, Endocarpon monicae, in older botanical literature.

This lichen is native to North America, making it a true local character in our continent’s diverse biological tapestry. However, like many of its lichen cousins, it tends to fly under the radar, quietly going about its business without much fanfare.

Where Can You Find It?

While we know Staurothele monicae calls North America home, the specifics of its distribution remain somewhat of a mystery. This isn’t uncommon in the lichen world – these organisms are often understudied compared to their more conspicuous plant neighbors.

Is It Beneficial for Your Garden?

Here’s where things get interesting. Unlike the flowers and shrubs you deliberately plant, Staurothele monicae isn’t something you can pick up at your local nursery. Lichens like this one are indicators of environmental health and air quality, so if you spot them naturally occurring in your area, consider it a good sign!

While this lichen won’t attract butterflies or hummingbirds like your favorite native wildflowers, it contributes to the ecosystem in its own quiet way:

  • Helps with soil formation and stabilization
  • Provides food for small insects and other tiny creatures
  • Acts as a natural air quality monitor
  • Adds to the overall biodiversity of your local ecosystem

How to Identify Staurothele monicae

Identifying specific lichen species can be tricky business, even for experienced naturalists. Staurothele monicae belongs to a group of crustose lichens, which means it forms a crust-like growth pattern on its substrate. Without getting too technical, you’ll want to look for small, often inconspicuous growths on rocks, bark, or soil.

If you suspect you’ve found this lichen, your best bet is to consult with local mycologists, botanists, or lichen specialists who can help with proper identification. Many areas have naturalist groups that would be thrilled to help solve the mystery!

Creating Lichen-Friendly Spaces

While you can’t plant Staurothele monicae like you would a native wildflower, you can create conditions that welcome lichens in general:

  • Minimize air pollution around your property
  • Avoid using harsh chemicals or pesticides
  • Leave some natural, undisturbed areas in your landscape
  • Maintain good air circulation
  • Preserve existing rocks, old trees, and other surfaces where lichens might establish

The Bottom Line

Staurothele monicae might not be the star of your native plant garden, but it represents an important piece of North America’s natural heritage. These quiet organisms remind us that biodiversity comes in all shapes and sizes – sometimes in packages so small we barely notice them.

If you’re passionate about supporting native species, focus on creating healthy, chemical-free environments where lichens like this one can thrive naturally. And who knows? You might just become one of the few people who can say they’ve spotted this elusive North American native in the wild.

Staurothele Monicae

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Verrucariales

Family

Verrucariaceae Eschw.

Genus

Staurothele Norman - wart lichen

Species

Staurothele monicae (Zahlbr.) Wetmore

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