North America Native Plant

Peltula Lichen

Botanical name: Peltula obscurans var. deserticola

USDA symbol: PEOBD

Habit: lichen

Native status: Native to North America  

Synonyms: Heppia deserticola Zahlbr. (HEDE11)   

Peltula Lichen: A Desert Crusty Friend You Didn’t Know You Had Meet the peltula lichen (Peltula obscurans var. deserticola) – one of nature’s most understated survivors that’s probably been quietly doing its thing in North American deserts while you weren’t looking. This isn’t your typical garden plant, and honestly, you ...

Peltula Lichen: A Desert Crusty Friend You Didn’t Know You Had

Meet the peltula lichen (Peltula obscurans var. deserticola) – one of nature’s most understated survivors that’s probably been quietly doing its thing in North American deserts while you weren’t looking. This isn’t your typical garden plant, and honestly, you can’t really grow it in the traditional sense. But stick around, because this little crusty character has some pretty fascinating secrets worth knowing about!

What Exactly Is a Peltula Lichen?

First things first – lichens aren’t actually plants! They’re fascinating partnerships between fungi and algae (or sometimes cyanobacteria) that work together like the ultimate odd couple. The peltula lichen is a member of this quirky biological alliance, specifically adapted to harsh desert conditions where most other organisms would throw in the towel.

This particular variety, scientifically known as Peltula obscurans var. deserticola (formerly called Heppia deserticola), is native to North America and has earned its deserticola name honestly – it’s a desert specialist through and through.

Where Can You Find It?

As a North American native, peltula lichen calls the continent’s arid regions home, though specific distribution details remain somewhat mysterious – much like the lichen itself. These hardy organisms typically colonize desert soils, rocks, and other surfaces where they form what looks like crusty patches or small, scaly formations.

Is Peltula Lichen Good for Your Garden?

Here’s where things get interesting! While you can’t exactly plant peltula lichen like you would a tomato, having it show up naturally in your landscape is actually a wonderful sign. Lichens are excellent indicators of good air quality and environmental health. If peltula lichen appears in your desert or xeriscape garden, consider it nature’s stamp of approval!

Benefits of having lichens around include:

  • Natural soil stabilization and erosion control
  • Indication of clean, unpolluted air
  • Subtle, natural texture and color variation in rock gardens
  • Part of the fascinating desert ecosystem web

How to Identify Peltula Lichen

Spotting peltula lichen requires getting up close and personal with your landscape. Look for small, crusty or scaly patches that might initially seem like discoloration on rocks or soil. These lichens tend to form thin, closely adhering crusts that blend remarkably well with their surroundings – they’re masters of desert camouflage!

The key identification features include their crusty texture and their preference for arid environments. However, positive identification often requires expert knowledge and sometimes microscopic examination, as many desert lichens can look quite similar to the untrained eye.

Can You Encourage Peltula Lichen in Your Space?

While you can’t plant lichens from seed packets, you can create conditions that might welcome them naturally. If you’re developing a desert or drought-tolerant landscape, focus on:

  • Maintaining clean air quality around your property
  • Avoiding excessive use of fertilizers and chemicals
  • Including natural stone and mineral elements in your design
  • Being patient – lichens are notoriously slow colonizers

The Bottom Line

Peltula lichen isn’t something you’ll find at your local nursery, and it’s not going to be the showstopper centerpiece of your garden. But if you’re lucky enough to discover these quiet desert dwellers making themselves at home in your landscape, take a moment to appreciate these remarkable survivors. They’re living proof that sometimes the most interesting garden residents are the ones that choose you, rather than the ones you choose!

Remember, lichens are incredibly slow-growing and sensitive to disturbance, so if you spot them, the best thing you can do is simply let them be and enjoy knowing that your little corner of the world is healthy enough to support these fascinating organisms.

Peltula Lichen

Classification

Group

Lichen

Kingdom

Fungi - Fungi

Subkingdom
Superdivision
Division

Ascomycota - Sac fungi

Subdivision
Class

Ascomycetes

Subclass
Order

Lichinales

Family

Peltulaceae Büdel

Genus

Peltula Nyl. - peltula lichen

Species

Peltula obscurans (Nyl.) Gyel. - peltula lichen

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