North America Native Plant

Lecania Lichen

Botanical name: Lecania turicensis

USDA symbol: LETU3

Habit: lichen

Native status: Native to North America  

Synonyms: Lecania albariella (Nyl.) Müll. Arg. (LEAL21)   

Lecania Lichen: The Tiny Garden Helper You Never Knew You Had Have you ever noticed those crusty, patch-like growths on tree bark or rocks in your garden and wondered what they were? Meet Lecania turicensis, commonly known as lecania lichen – a fascinating organism that’s probably been quietly living in ...

Lecania Lichen: The Tiny Garden Helper You Never Knew You Had

Have you ever noticed those crusty, patch-like growths on tree bark or rocks in your garden and wondered what they were? Meet Lecania turicensis, commonly known as lecania lichen – a fascinating organism that’s probably been quietly living in your outdoor space without you even realizing it!

What Exactly Is Lecania Lichen?

First things first – lecania lichen isn’t actually a plant at all! It’s a lichen, which is a remarkable partnership between a fungus and algae (or sometimes cyanobacteria) working together in perfect harmony. Think of it as nature’s ultimate roommate situation, where both parties benefit from the arrangement.

Lecania turicensis belongs to a group called crustose lichens, which means they form thin, crusty patches that seem almost painted onto their host surface. You might also see this species referred to by its scientific synonym, Lecania albariella, in older reference materials.

Where You’ll Find This Native Beauty

This particular lichen species is native to North America, making it a true local resident in many gardens and natural areas across the continent. While specific distribution details for Lecania turicensis are limited in current research, lichens in the Lecania genus are typically found in various habitats throughout their native range.

Is Lecania Lichen Good for Your Garden?

Absolutely! While you can’t exactly plant lichens like you would a tomato, having them naturally occur in your garden is actually a wonderful sign. Here’s why lecania lichen is a garden friend:

  • They’re excellent air quality indicators – lichens are sensitive to pollution, so their presence suggests clean air
  • They don’t harm trees or structures they grow on (they’re not parasites)
  • They add natural texture and visual interest to bark and stone surfaces
  • They contribute to the overall ecosystem diversity in your garden
  • They can provide shelter for tiny insects and other microscopic creatures

How to Identify Lecania Lichen

Spotting lecania lichen requires looking closely at the surfaces around your garden:

  • Look for thin, crusty patches on tree bark, rocks, or even concrete surfaces
  • The growth appears tightly attached to its substrate, almost like it’s part of the surface
  • Colors can vary but are typically grayish, whitish, or pale colored
  • The surface may appear smooth or slightly bumpy
  • Unlike moss, it won’t feel soft or spongy to the touch

Encouraging Lichens in Your Garden

While you can’t plant lichens like traditional garden plants, you can create conditions that make them more likely to thrive:

  • Maintain good air quality by avoiding excessive use of chemicals and pesticides
  • Provide diverse surfaces like natural stone, untreated wood, or leave some tree bark undisturbed
  • Avoid scrubbing or cleaning surfaces where lichens might establish
  • Be patient – lichens grow very slowly and establish naturally over time

A Few Things to Keep in Mind

Lecania lichen is completely harmless to plants, structures, and people. If you notice it growing on your trees, don’t worry – it’s not causing any damage. In fact, try to resist the urge to scrub it off, as these slow-growing organisms can take years to reestablish once removed.

The next time you’re wandering through your garden, take a moment to appreciate these tiny, often-overlooked members of your outdoor community. Lecania turicensis and its lichen relatives are quiet contributors to the complex web of life that makes a garden truly thrive!

Lecania Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Bacidiaceae Walt. Watson

Genus

Lecania A. Massal. - lecania lichen

Species

Lecania turicensis (Hepp) Müll. Arg. - lecania lichen

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