North America Native Plant

Trichodon Moss

Botanical name: Trichodon cylindricus var. oblongus

USDA symbol: TRCYO

Habit: nonvascular

Native status: Native to North America  

Synonyms: Ditrichum boreale (R.S. Williams) Grout (DIBO3)  ⚘  Trichodon borealis R.S. Williams (TRBO9)   

Trichodon Moss: A Native North American Moss Worth Knowing Meet trichodon moss (Trichodon cylindricus var. oblongus), a fascinating little native that’s quietly doing its part in North American ecosystems. While you might not be rushing to your local nursery to pick up a flat of moss seedlings, understanding this humble ...

Rare plant alert!

Region: Conservation status by state

Status: S4S5T2T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Trichodon Moss: A Native North American Moss Worth Knowing

Meet trichodon moss (Trichodon cylindricus var. oblongus), a fascinating little native that’s quietly doing its part in North American ecosystems. While you might not be rushing to your local nursery to pick up a flat of moss seedlings, understanding this humble bryophyte can help you appreciate the complex web of life happening right under your nose—or should we say, under your feet!

What Exactly Is Trichodon Moss?

Trichodon moss belongs to that amazing group of plants we call bryophytes—the mosses, liverworts, and hornworts that were some of the first plants to make the leap from water to land millions of years ago. This particular variety is a terrestrial moss, meaning it’s perfectly happy living on dry land rather than being submerged in water.

You might also encounter this moss under its scientific synonyms Ditrichum boreale or Trichodon borealis in older field guides or research papers—botanists do love to shuffle names around as they learn more about plant relationships!

Where Does Trichodon Moss Call Home?

This moss is a true North American native, though the specific geographic distribution of this particular variety remains somewhat mysterious in the botanical literature. Like many mosses, it likely has a preference for specific microhabitats that provide just the right combination of moisture, light, and substrate.

Is This Moss Garden-Friendly?

While trichodon moss isn’t something you’d typically plant intentionally, it might very well find its way into your garden on its own—and that’s actually a good thing! Here’s why having native mosses around is beneficial:

  • They help prevent soil erosion with their dense, mat-like growth
  • Mosses act as tiny sponges, helping to retain moisture in the soil
  • They provide habitat for countless microscopic organisms
  • Native mosses support local ecosystem balance

How to Identify Trichodon Moss

Like most mosses, trichodon moss is an herbaceous plant that forms low-growing patches. You’re most likely to find it attached to solid surfaces like rocks, fallen logs, or tree bark rather than growing directly in soil. This moss has a particular fondness for these hard substrates, which help distinguish it from soil-dwelling moss species.

The variety oblongus suggests this moss may have somewhat elongated or oblong-shaped features, though you’d need a hand lens or microscope to really appreciate the fine details that separate this variety from its close relatives.

Conservation Considerations

Interestingly, this moss carries a Global Conservation Status of S4S5T2T4, which indicates varying levels of conservation concern across different regions. While not critically endangered, this designation suggests we should appreciate and protect the native moss communities where we find them.

Living Alongside Native Mosses

The best way to support trichodon moss and other native bryophytes is simply to let them be. If you discover moss growing on rocks, logs, or tree bark in your garden, resist the urge to scrape it off. These tiny ecosystems are providing valuable services and supporting biodiversity in ways we’re only beginning to understand.

Consider leaving some wild corners in your landscape where mosses can establish naturally. Dead logs, rock piles, and undisturbed shady areas all provide potential habitat for native mosses like trichodon moss to thrive.

So next time you’re out in your garden, take a moment to appreciate the small green carpets that might be quietly growing on that old stump or garden wall—you just might be looking at trichodon moss, a tiny but important piece of North America’s native plant heritage.

Trichodon Moss

Classification

Group

Moss

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Bryophyta - Mosses

Subdivision

Musci

Class

Bryopsida - True mosses

Subclass

Bryidae

Order

Dicranales

Family

Ditrichaceae Limpr.

Genus

Trichodon Schimp. - trichodon moss

Species

Trichodon cylindricus (Hedw.) Schimp. - trichodon moss

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