North America Native Plant

Chocolate Chip Lichen

Botanical name: Solorina crocea

USDA symbol: SOCR60

Habit: lichen

Native status: Native to North America  

Chocolate Chip Lichen: A Fascinating Find in Your Natural Garden Have you ever spotted what looks like tiny chocolate chips scattered across rocks or soil in your garden? You might have discovered one of nature’s most interesting partnerships – the chocolate chip lichen, scientifically known as Solorina crocea. This remarkable ...

Chocolate Chip Lichen: A Fascinating Find in Your Natural Garden

Have you ever spotted what looks like tiny chocolate chips scattered across rocks or soil in your garden? You might have discovered one of nature’s most interesting partnerships – the chocolate chip lichen, scientifically known as Solorina crocea. This remarkable organism isn’t actually a plant at all, but rather a fascinating fusion of fungus and algae working together in perfect harmony.

What Exactly Is Chocolate Chip Lichen?

Lichens are among nature’s most successful collaborations. The chocolate chip lichen consists of a fungal partner that provides structure and protection, while microscopic algae live within its tissues, producing food through photosynthesis. This incredible partnership allows them to thrive in environments where neither organism could survive alone.

As a native species to North America, Solorina crocea plays an important role in natural ecosystems, particularly in boreal and subarctic regions. You’ll find this lichen naturally occurring across northern parts of the continent, where it contributes to the complex web of life in these challenging environments.

Identifying Chocolate Chip Lichen

The chocolate chip lichen gets its charming common name from its distinctive appearance. Here’s what to look for:

  • Gray-green to brownish thallus (the main body of the lichen) that forms crusty patches
  • Bright orange to reddish-brown fruiting bodies called apothecia that really do resemble chocolate chips
  • These chocolate chips are typically 2-8mm across and sit on the surface like little buttons
  • The overall appearance is of chocolate chips sprinkled on a grayish cookie

Where You Might Spot It

Chocolate chip lichen prefers specific growing conditions that make it somewhat picky about where it calls home:

  • Acidic soil, moss, or rock surfaces
  • Cool, moist environments with good air circulation
  • Areas with minimal air pollution (lichens are excellent air quality indicators!)
  • Partially shaded locations protected from intense sun

Is It Beneficial for Your Garden?

While you can’t plant or cultivate chocolate chip lichen like traditional garden plants, finding it in your landscape is actually wonderful news! Its presence indicates several positive things about your garden environment:

  • Good air quality – lichens are sensitive to pollution and only thrive in clean air
  • Balanced ecosystem conditions
  • Minimal chemical interference in your landscape

The lichen also provides subtle ecological benefits by helping prevent soil erosion and contributing to nutrient cycling in natural areas.

Can You Grow Chocolate Chip Lichen?

Here’s where things get interesting – you can’t actually plant or propagate chocolate chip lichen in the traditional sense. Unlike plants, lichens can’t be grown from seeds or cuttings. They form naturally when the right fungal and algal partners meet under suitable conditions.

However, you can encourage lichen diversity in your landscape by:

  • Maintaining chemical-free gardening practices
  • Preserving natural rock and moss features
  • Avoiding excessive cleanup of messy natural areas
  • Being patient – lichens grow extremely slowly

A Living Indicator of Garden Health

Think of chocolate chip lichen as nature’s stamp of approval on your gardening practices. If you’re fortunate enough to discover this fascinating organism in your landscape, take a moment to appreciate both its unique beauty and what it represents – a healthy, balanced environment where one of nature’s most ancient partnerships can flourish.

While you might not be able to add chocolate chip lichen to your shopping list at the garden center, you can certainly celebrate its presence as a sign that your garden is supporting the incredible diversity of life that makes our natural world so remarkable.

Chocolate Chip Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Peltigerales

Family

Peltigeraceae Dumort.

Genus

Solorina Ach. - chocolate chip lichen

Species

Solorina crocea (L.) Ach. - chocolate chip lichen

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