North America Native Plant

Asahina’s Cup Lichen

Botanical name: Cladonia asahinae

USDA symbol: CLAS5

Habit: lichen

Native status: Native to North America  

Asahina’s Cup Lichen: A Mysterious Native Lichen Worth Knowing Meet Asahina’s cup lichen (Cladonia asahinae), one of North America’s more enigmatic native lichen species. While you might not find this particular lichen at your local nursery, understanding what it is and its role in our native ecosystems can help you ...

Asahina’s Cup Lichen: A Mysterious Native Lichen Worth Knowing

Meet Asahina’s cup lichen (Cladonia asahinae), one of North America’s more enigmatic native lichen species. While you might not find this particular lichen at your local nursery, understanding what it is and its role in our native ecosystems can help you become a more informed gardener and nature enthusiast.

What Exactly is Asahina’s Cup Lichen?

First things first – let’s clear up what we’re dealing with here. Asahina’s cup lichen isn’t actually a plant in the traditional sense. Lichens are fascinating composite organisms made up of a fungus and an alga (or cyanobacterium) living together in a mutually beneficial partnership. Think of it as nature’s ultimate roommate situation that actually works!

This particular lichen is native to North America, though specific details about its exact range and distribution remain somewhat mysterious in the scientific literature.

Is This Lichen Beneficial in Your Garden?

While you won’t be planting Asahina’s cup lichen like you would a wildflower or native shrub, lichens like this one can be incredibly beneficial to have around your property:

  • They’re excellent indicators of air quality – lichens are sensitive to pollution, so their presence suggests clean air
  • They provide habitat and food for various small wildlife species
  • They help with soil formation and stabilization over time
  • They add unique texture and visual interest to natural landscapes

How to Identify Asahina’s Cup Lichen

Identifying specific lichen species can be tricky, and Asahina’s cup lichen is no exception. Like other cup lichens in the Cladonia genus, it likely features:

  • Small, cup-shaped or funnel-like structures (called podetia)
  • A crusty or scaly base (the primary thallus)
  • Colors that may range from grayish-green to pale green
  • Growth on soil, rotting wood, or sometimes rock surfaces

However, positive identification of this specific species would require expert knowledge and possibly microscopic examination, as many cup lichens look quite similar to the untrained eye.

Creating Lichen-Friendly Spaces

Rather than trying to cultivate this particular lichen, you can create conditions that encourage native lichens in general:

  • Minimize air pollution around your property
  • Avoid using harsh chemicals or pesticides
  • Leave some undisturbed areas with natural substrates
  • Maintain good air circulation in your landscape
  • Be patient – lichens grow very slowly!

The Bottom Line

While Asahina’s cup lichen might not be the showstopper centerpiece of your native garden, it represents the incredible diversity of North America’s native species. These small but mighty organisms play important roles in their ecosystems, and learning to appreciate them can deepen your connection to the natural world right outside your door.

If you spot what you think might be this or other cup lichens on your property, consider yourself lucky to be hosting these fascinating organisms. Just remember – look but don’t touch, as lichens are delicate and slow-growing. Let them be the quiet, mysterious inhabitants they’re meant to be!

Asahina’s Cup Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Cladoniaceae Zenker

Genus

Cladonia P. Browne - cup lichen

Species

Cladonia asahinae J.W. Thomson - Asahina's cup lichen

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