North America Native Plant

Pyrrhospora Cinnabarina

Botanical name: Pyrrhospora cinnabarina

USDA symbol: PYCI4

Habit: lichen

Native status: Native to North America  

Synonyms: Lecidea cinnabarina Sommerf. (LECI7)  ⚘  Protoblastenia cinnabarina (Sommerf.) Rasanen (PRCI3)   

Pyrrhospora cinnabarina: The Fiery Orange Lichen Adding Natural Color to Your Landscape Have you ever noticed bright orange or reddish patches on tree bark and wondered what they might be? You might be looking at Pyrrhospora cinnabarina, a fascinating lichen species that brings unexpected splashes of vibrant color to North ...

Pyrrhospora cinnabarina: The Fiery Orange Lichen Adding Natural Color to Your Landscape

Have you ever noticed bright orange or reddish patches on tree bark and wondered what they might be? You might be looking at Pyrrhospora cinnabarina, a fascinating lichen species that brings unexpected splashes of vibrant color to North American forests and landscapes.

What Exactly Is Pyrrhospora cinnabarina?

Pyrrhospora cinnabarina is a crustose lichen – essentially a partnership between fungi and algae that forms colorful, crusty patches on surfaces. The name cinnabarina refers to its striking cinnabar-red to bright orange coloration, making it one of the more eye-catching lichens you’ll encounter in nature.

This lichen was previously known by other scientific names, including Lecidea cinnabarina and Protoblastenia cinnabarina, but regardless of what you call it, its fiery appearance makes it unmistakable.

Where You’ll Find This Colorful Character

As a native North American species, Pyrrhospora cinnabarina naturally occurs across northern regions of the continent, particularly in boreal and subarctic areas. You’re most likely to spot it in USDA hardiness zones 1-6, where it thrives in the cooler climates it prefers.

Identifying Pyrrhospora cinnabarina

Spotting this lichen is relatively straightforward thanks to its distinctive features:

  • Bright orange to cinnabar-red coloration
  • Crusty, patch-like growth form that adheres tightly to surfaces
  • Typically found on tree bark and dead wood
  • Forms irregular, spreading patches rather than organized shapes

Is It Beneficial for Your Garden?

While you can’t plant Pyrrhospora cinnabarina like a traditional garden plant, its presence is actually a wonderful sign for your landscape. Here’s why having lichens like this around is beneficial:

  • Air quality indicator: Lichens are sensitive to air pollution, so their presence suggests clean, healthy air
  • Natural beauty: Adds year-round color and texture to tree bark and wooden structures
  • Ecosystem health: Contributes to biodiversity and serves as a food source for some wildlife
  • No maintenance required: Once established, it requires absolutely no care from you

Creating Lichen-Friendly Conditions

While you can’t actively cultivate Pyrrhospora cinnabarina, you can encourage lichens in general by:

  • Maintaining clean air quality around your property
  • Avoiding chemical treatments on trees and wooden structures
  • Preserving mature trees that provide suitable bark surfaces
  • Leaving some dead wood in natural areas of your landscape

The Bottom Line

Pyrrhospora cinnabarina isn’t something you’ll find at your local nursery, and that’s perfectly fine! This native lichen is nature’s way of adding unexpected pops of orange and red to the landscape. If you’re lucky enough to have it appear naturally on your property, consider yourself blessed with both clean air and a touch of wild beauty that requires zero effort on your part.

Rather than trying to cultivate lichens, focus on creating healthy, chemical-free environments where these remarkable organisms can establish themselves naturally. Sometimes the best garden additions are the ones that simply show up on their own!

Pyrrhospora Cinnabarina

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Lecanoraceae Körb.

Genus

Pyrrhospora Körb. - pyrrhospora lichen

Species

Pyrrhospora cinnabarina (Sommerf.) M. Choisy

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