North America Native Plant

Almquist’s Allantoparmelia Lichen

Botanical name: Allantoparmelia almquistii

USDA symbol: ALAL60

Habit: lichen

Native status: Native to North America  

Synonyms: Parmelia almquistii Vain. (PAAL24)   

Discovering Almquist’s Allantoparmelia Lichen: A Fascinating Garden Visitor Have you ever noticed crusty, grayish patches growing on the rocks or tree bark in your garden and wondered what they might be? You might be looking at Almquist’s allantoparmelia lichen (Allantoparmelia almquistii), a remarkable organism that’s neither plant nor animal, but ...

Discovering Almquist’s Allantoparmelia Lichen: A Fascinating Garden Visitor

Have you ever noticed crusty, grayish patches growing on the rocks or tree bark in your garden and wondered what they might be? You might be looking at Almquist’s allantoparmelia lichen (Allantoparmelia almquistii), a remarkable organism that’s neither plant nor animal, but something wonderfully unique.

What Exactly Is This Mysterious Organism?

Almquist’s allantoparmelia lichen is a fascinating example of nature’s cooperation at its finest. This native North American species is actually a partnership between a fungus and algae, working together in perfect harmony. The fungus provides structure and protection, while the algae produces food through photosynthesis – it’s like having the ultimate roommate arrangement!

You might also encounter this lichen listed under its scientific synonym, Parmelia almquistii, in older field guides or research papers.

Where You’ll Find This Natural Wonder

As a native species to North America, Allantoparmelia almquistii has been quietly making its home across the continent for countless years. This lichen has adapted to various climates and conditions throughout its natural range.

Is It Beneficial to Have in Your Garden?

Absolutely! While you can’t plant or cultivate Almquist’s allantoparmelia lichen like you would a flower or shrub, having it appear naturally in your garden is actually a wonderful sign. Here’s why you should celebrate its presence:

  • Air quality indicator: Lichens are incredibly sensitive to air pollution, so their presence suggests you have relatively clean air in your area
  • Ecosystem health: A thriving lichen community indicates a balanced, healthy environment
  • Natural beauty: These organisms add subtle texture and color to rocks, tree bark, and other surfaces
  • Low maintenance: They require absolutely no care from you – they’re completely self-sufficient!

How to Identify Almquist’s Allantoparmelia Lichen

Spotting this lichen is easier than you might think once you know what to look for:

  • Appearance: Look for gray-green to yellowish-green crusty patches with a somewhat wrinkled or bumpy texture
  • Location: You’ll typically find it growing on rock surfaces or tree bark
  • Size: Individual patches can vary in size but often form irregular, spreading colonies
  • Texture: The surface has a distinctive crusty, almost paint-like appearance that’s firmly attached to its host surface

Living Alongside Your Lichen Neighbors

The best thing about Almquist’s allantoparmelia lichen is that it asks for nothing from you as a gardener. You don’t need to water it, fertilize it, or worry about pruning. In fact, trying to remove it or disturb it is unnecessary and potentially harmful to your local ecosystem.

If you’re lucky enough to have this lichen growing naturally in your garden, simply appreciate it for the remarkable organism it is. It’s been perfecting its survival strategy for millions of years, long before humans started cultivating gardens!

A Quiet Marvel Worth Appreciating

While Almquist’s allantoparmelia lichen may not have the showy blooms of your favorite flowers or the dramatic foliage of ornamental plants, it represents something equally special – the incredible diversity and resilience of native species. Next time you’re walking through your garden, take a moment to appreciate these small but mighty organisms that have been silently enriching our landscapes for generations.

Remember, a garden that welcomes lichens is a garden that’s truly in harmony with nature!

Almquist’s Allantoparmelia Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lecanorales

Family

Parmeliaceae F. Berchtold & J. Presl

Genus

Allantoparmelia (Vain.) Essl. - allantoparmelia lichen

Species

Allantoparmelia almquistii (Vain.) Essl. - Almquist's allantoparmelia lichen

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