North America Native Plant

Chromatochlamys Lichen

Botanical name: Chromatochlamys muscorum var. octospora

USDA symbol: CHMUO

Habit: lichen

Native status: Native to North America  

Synonyms: Pyrenidium octosporum Looman (PYOC5)   

Chromatochlamys Lichen: A Mysterious North American Native If you’ve ever wondered about the tiny, often overlooked organisms quietly living on rocks, bark, and soil in your garden, you might be curious about chromatochlamys lichen. This fascinating little organism, scientifically known as Chromatochlamys muscorum var. octospora, represents one of nature’s most ...

Chromatochlamys Lichen: A Mysterious North American Native

If you’ve ever wondered about the tiny, often overlooked organisms quietly living on rocks, bark, and soil in your garden, you might be curious about chromatochlamys lichen. This fascinating little organism, scientifically known as Chromatochlamys muscorum var. octospora, represents one of nature’s most intriguing partnerships between fungi and algae.

What Exactly Is Chromatochlamys Lichen?

Unlike the flowering plants and shrubs we typically think of when planning our gardens, chromatochlamys lichen isn’t a plant at all. It’s actually a composite organism made up of a fungus and an alga working together in perfect harmony. This partnership, called symbiosis, allows lichens to survive in some pretty tough conditions where neither partner could make it on their own.

This particular lichen is also known by its scientific synonym Pyrenidium octosporum Looman, though you’re unlikely to hear anyone casually dropping that name at the local garden center!

Where Does It Call Home?

Chromatochlamys lichen is a native North American species, meaning it has been quietly doing its thing on this continent long before European settlers arrived. However, specific details about exactly where in North America you’re most likely to encounter this particular variety remain somewhat of a botanical mystery.

Is It Beneficial for Your Garden?

While chromatochlamys lichen might not add the splash of color or dramatic height that traditional garden plants provide, lichens in general can be surprisingly beneficial garden residents:

  • They’re excellent indicators of air quality – lichens are sensitive to pollution, so their presence suggests clean air
  • They help prevent soil erosion on slopes and bare patches
  • Some wildlife species use lichens as food or nesting material
  • They add subtle texture and interest to natural garden designs

How to Identify This Lichen

Here’s where things get a bit tricky – identifying specific lichen varieties often requires a keen eye and sometimes even a microscope. Unfortunately, detailed identification characteristics for Chromatochlamys muscorum var. octospora aren’t widely documented in accessible gardening resources.

If you’re interested in the lichens in your garden, your best bet is to:

  • Take clear, close-up photos of any lichens you find
  • Note where they’re growing (on bark, rocks, soil)
  • Contact your local extension office or botanical society
  • Consider joining a local naturalist group that focuses on non-flowering plants

The Bottom Line for Gardeners

While you probably won’t be heading to the nursery to specifically purchase chromatochlamys lichen for your landscape design, appreciating these quiet garden residents can add a whole new dimension to your gardening experience. If you spot lichens in your garden, consider yourself lucky – you’ve got some of nature’s most resilient and fascinating organisms as neighbors.

Rather than trying to remove them, why not embrace their subtle beauty? They’re doing no harm to your plants and might actually be telling you that your garden has pretty clean air. Plus, there’s something wonderfully mysterious about having a garden inhabitant that scientists are still working to fully understand!

Chromatochlamys Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order
Family

Thelenellaceae O.E. Erikss. ex H. Mayrhofer

Genus

Chromatochlamys Trevis. - chromatochlamys lichen

Species

Chromatochlamys muscorum (Fr.) H. Mayrh. & Poelt - chromatochlamys lichen

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