North America Native Plant

Spitsberg Orange Lichen

Botanical name: Caloplaca spitsbergensis

USDA symbol: CASP22

Habit: lichen

Native status: Native to North America  

Spitsberg Orange Lichen: A Colorful Arctic Survivor You Can’t Grow (But Should Appreciate) If you’ve ever wondered about those bright orange patches you might spot on rocks in the far north, you’ve likely encountered Caloplaca spitsbergensis, commonly known as Spitsberg orange lichen. This fascinating organism isn’t something you can add ...

Spitsberg Orange Lichen: A Colorful Arctic Survivor You Can’t Grow (But Should Appreciate)

If you’ve ever wondered about those bright orange patches you might spot on rocks in the far north, you’ve likely encountered Caloplaca spitsbergensis, commonly known as Spitsberg orange lichen. This fascinating organism isn’t something you can add to your garden wishlist, but it’s definitely worth understanding – especially if you’re curious about the incredible diversity of life that calls North America home.

What Exactly Is Spitsberg Orange Lichen?

Let’s clear up a common misconception right away: lichens aren’t plants! Caloplaca spitsbergensis is actually a remarkable partnership between a fungus and algae (and sometimes bacteria too). Think of it as nature’s ultimate roommate situation – the fungus provides shelter and minerals, while the algae whips up food through photosynthesis. It’s a win-win arrangement that’s been working for millions of years.

This particular lichen species is native to North America and thrives in some of the planet’s most challenging environments. You won’t find it lounging in temperate gardens – it’s built for the big leagues of survival.

Where Does It Call Home?

Spitsberg orange lichen has claimed some pretty exclusive real estate across the Arctic regions. You’ll find it decorating rocks and surfaces throughout northern Canada, Alaska, and other circumpolar Arctic areas. As its name suggests, it was notably documented in Svalbard (formerly Spitsbergen), but its range extends across the Arctic regions of North America.

How to Spot This Orange Beauty

Identifying Caloplaca spitsbergensis is actually pretty straightforward once you know what to look for:

  • Vibrant orange to yellow-orange coloration
  • Crusty, patch-like appearance on rock surfaces
  • Typically found on exposed rocks and mineral-rich substrates
  • Forms irregular patches rather than leafy or branching structures

The bright orange color is your biggest clue – it’s like nature’s highlighter marking some of the world’s most remote rocky surfaces.

Is It Beneficial to Have Around?

While you can’t cultivate Spitsberg orange lichen in your backyard, it plays important ecological roles in its native Arctic environment:

  • Helps break down rock surfaces, contributing to soil formation over geological time
  • Indicates good air quality – lichens are sensitive to pollution
  • Provides food for some Arctic wildlife, including caribou and other herbivores
  • Contributes to the unique biodiversity of Arctic ecosystems

Why You Can’t (And Shouldn’t Try to) Grow It

Here’s the thing about lichens like Caloplaca spitsbergensis – they’re not available at your local nursery, and for good reason. These organisms require:

  • Pristine air quality (they’re incredibly sensitive to pollution)
  • Specific climate conditions found only in Arctic regions
  • Particular rock substrates and mineral compositions
  • The exact right balance of moisture, temperature, and light

Attempting to relocate or cultivate wild lichens is also environmentally irresponsible and typically unsuccessful. These slow-growing organisms can take decades to establish, and disturbing them in their natural habitat can cause lasting damage.

Appreciating Arctic Lichens from Afar

While you can’t bring Spitsberg orange lichen home, you can appreciate its remarkable adaptations and the vital role it plays in Arctic ecosystems. If you’re lucky enough to visit Arctic regions where it grows naturally, consider it a privilege to observe this hardy survivor in its element.

For gardeners interested in supporting native biodiversity closer to home, focus on native plants appropriate for your local climate zone. While they might not have the exotic appeal of Arctic lichens, native flowering plants, grasses, and shrubs will provide genuine benefits to local wildlife and ecosystems – something that’s just as rewarding in its own way.

Spitsberg Orange Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Teloschistales

Family

Teloschistaceae Zahlbr.

Genus

Caloplaca Th. Fr. - orange lichen

Species

Caloplaca spitsbergensis H. Magn. - Spitsberg orange lichen

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