North America Native Plant

Lichenothelia Lichen

Botanical name: Lichenothelia tenuissima

USDA symbol: LITE11

Habit: lichen

Native status: Native to North America  

Lichenothelia Lichen: A Mysterious North American Species If you’ve stumbled upon the name lichenothelia lichen in your quest to understand the tiny organisms living in your garden, you’re in for a fascinating journey into one of nature’s most mysterious partnerships. Lichenothelia tenuissima is a lichen species native to North America, ...

Lichenothelia Lichen: A Mysterious North American Species

If you’ve stumbled upon the name lichenothelia lichen in your quest to understand the tiny organisms living in your garden, you’re in for a fascinating journey into one of nature’s most mysterious partnerships. Lichenothelia tenuissima is a lichen species native to North America, though it remains one of the more elusive members of the lichen world.

What Exactly Is a Lichen?

Before we dive into this particular species, let’s clear up what a lichen actually is – because it’s definitely not what most people think! A lichen isn’t a single organism at all. Instead, it’s 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 the arrangement.

The fungus provides structure and protection, while the algae or cyanobacteria do the heavy lifting of photosynthesis, creating food for both partners. It’s like having a friend who’s great at building houses team up with someone who’s excellent at cooking – together, they create something neither could manage alone.

The Elusive Lichenothelia Tenuissima

Lichenothelia tenuissima is one of those species that keeps botanists and lichenologists on their toes. As a North American native, this lichen calls our continent home, but beyond that, specific details about its distribution and characteristics remain largely unknown to the general public.

Is This Lichen Beneficial in Your Garden?

Here’s the thing about lichens in general – they’re actually fantastic indicators of environmental health! Most lichens are incredibly sensitive to air pollution, so finding any lichen species in your garden is usually a good sign that your local air quality is decent.

Lichens also play several beneficial roles in garden ecosystems:

  • They help break down rock and other surfaces, contributing to soil formation over time
  • Some birds use certain lichens as nesting material
  • They can provide food for various small creatures
  • They add interesting textures and subtle colors to natural landscapes

Spotting Lichens in Your Space

Since specific identification details for Lichenothelia tenuissima aren’t widely documented, your best bet for lichen identification is to look for the general characteristics that all lichens share. You’ll typically find them growing on:

  • Tree bark
  • Rocks and stones
  • Soil surfaces
  • Old wooden structures

Lichens come in three main growth forms: crusty (crustose), leafy (foliose), and branching (fruticose). They often appear as colorful patches or intricate branching structures, ranging from bright yellows and oranges to subtle grays and greens.

The Bottom Line

While Lichenothelia tenuissima remains something of a mystery in terms of specific growing requirements and detailed characteristics, lichens as a group are wonderful additions to any natural garden space. They’re not something you typically plant in the traditional sense – they’ll show up on their own when conditions are right.

If you’re interested in encouraging lichens in your garden, focus on maintaining good air quality, avoiding harsh chemical treatments on surfaces where they might grow, and being patient. These slow-growing partnerships between fungi and algae operate on their own timeline, but they’re worth the wait for the subtle beauty and environmental benefits they bring to your outdoor space.

Lichenothelia Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Dothideales

Family

Lichenotheliaceae Henssen

Genus

Lichenothelia D. Hawksw. - lichenothelia lichen

Species

Lichenothelia tenuissima Henssen - lichenothelia lichen

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