North America Native Plant

Nylander’s Lecidea Lichen

Botanical name: Lecidea nylanderi

USDA symbol: LENY2

Habit: lichen

Native status: Native to North America  

Nylander’s Lecidea Lichen: A Tiny Natural Wonder in Your Garden Have you ever noticed those small, crusty patches of gray-white or pale yellow growth on rocks, stone walls, or concrete surfaces around your garden? You might be looking at Nylander’s lecidea lichen (Lecidea nylanderi), a fascinating little organism that’s more ...

Nylander’s Lecidea Lichen: A Tiny Natural Wonder in Your Garden

Have you ever noticed those small, crusty patches of gray-white or pale yellow growth on rocks, stone walls, or concrete surfaces around your garden? You might be looking at Nylander’s lecidea lichen (Lecidea nylanderi), a fascinating little organism that’s more complex and beneficial than you might think!

What Exactly Is Nylander’s Lecidea Lichen?

First things first – despite its name, this isn’t actually a plant at all! Lecidea nylanderi is a lichen, which is a remarkable partnership between a fungus and an algae (or sometimes cyanobacteria). Think of it as nature’s ultimate roommate situation where both partners benefit from living together. The fungus provides structure and protection, while the algae produces food through photosynthesis.

This particular lichen forms thin, crusty patches that can range from gray-white to pale yellow in color. It’s what scientists call a crustose lichen, meaning it grows flat against its surface like a natural paint job that won’t peel off.

Where You’ll Find This Native Beauty

Nylander’s lecidea lichen is native to North America and can be found across northern regions of the continent, particularly in boreal and montane areas. It’s quite the traveler and has adapted to various climates and elevations throughout its range.

How to Spot Lecidea nylanderi

Identifying this lichen is like becoming a nature detective! Here’s what to look for:

  • Small, thin crusty patches on rock surfaces, stone walls, or concrete
  • Gray-white to pale yellow coloration
  • Smooth to slightly rough texture
  • Tightly adhered to the surface (you can’t peel it off like paper)
  • Small, dark spots (apothecia) that may appear on the surface – these are the lichen’s reproductive structures

Is It Beneficial to Have in Your Garden?

Absolutely! While you can’t exactly plant Nylander’s lecidea lichen, having it appear naturally in your garden is actually a wonderful sign. Here’s why you should celebrate these little crusty patches:

  • Air quality indicator: Lichens are incredibly sensitive to air pollution, so their presence indicates clean, healthy air in your garden
  • Natural beauty: They add subtle texture and natural character to stone features
  • Ecosystem support: While they don’t attract pollinators like flowering plants, they contribute to the overall biodiversity of your garden’s microhabitat
  • Low maintenance: They require absolutely no care from you – nature handles everything!

Creating Conditions Where Lichens Thrive

While you can’t plant lichens like traditional garden plants, you can create an environment where they’re more likely to appear naturally:

  • Include natural stone elements like rock walls, boulders, or stone pathways
  • Avoid using harsh chemicals or pressure washing stone surfaces frequently
  • Maintain good air quality around your property
  • Allow some areas to remain undisturbed – lichens prefer peaceful spots
  • Ensure adequate moisture without creating soggy conditions

A Word of Patience

If you’re hoping to see lichens appear in your garden, remember that they’re incredibly slow growers. We’re talking millimeters per year, so don’t expect overnight results! Some lichen colonies can be decades or even centuries old, making them like tiny living antiques in your landscape.

The Bottom Line

Nylander’s lecidea lichen might be small and unassuming, but it’s a fascinating addition to any natural garden setting. Rather than trying to remove these crusty patches from your stone surfaces, consider them a badge of honor – proof that your garden has clean air and healthy conditions. They’re living reminders that some of nature’s most interesting residents are also the most understated.

So the next time you’re wandering around your garden, take a moment to appreciate these tiny partnerships between fungus and algae. They’ve been perfecting their collaboration for millions of years, and they’re happy to call your garden home!

Nylander’s Lecidea Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Lecideaceae Chevall.

Genus

Lecidea Ach. - lecidea lichen

Species

Lecidea nylanderi (Anzi) Th. Fr. - Nylander's lecidea lichen

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