North America Native Plant

Convoluted Barbula Moss

Botanical name: Barbula convoluta var. gallinula

USDA symbol: BACOG

Habit: nonvascular

Native status: Native to North America  

Convoluted Barbula Moss: A Tiny Native Worth Knowing Meet the convoluted barbula moss (Barbula convoluta var. gallinula), a small but fascinating native moss that’s part of North America’s often-overlooked botanical tapestry. While you might not be planning to plant this tiny species in your garden, understanding these native mosses can ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2?Q: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Uncertain taxonomy: ⚘ 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) ⚘ 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. ⚘

Convoluted Barbula Moss: A Tiny Native Worth Knowing

Meet the convoluted barbula moss (Barbula convoluta var. gallinula), a small but fascinating native moss that’s part of North America’s often-overlooked botanical tapestry. While you might not be planning to plant this tiny species in your garden, understanding these native mosses can help you appreciate the complex ecosystem right under your feet.

What Exactly Is Convoluted Barbula Moss?

This little moss belongs to the fascinating world of bryophytes – those ancient, non-flowering plants that have been quietly doing their thing for millions of years. Unlike the flashy perennials we typically focus on, Barbula convoluta var. gallinula is a terrestrial moss that prefers to make its home attached to solid surfaces like rocks, tree bark, or dead wood rather than growing directly in soil.

As an herbaceous plant, it stays green and soft throughout its life cycle, never developing the woody stems we see in trees and shrubs. Think of it as nature’s living carpet – small, unassuming, but surprisingly important.

Where You’ll Find This Native Moss

This variety of barbula moss calls North America home, though specific distribution details for this particular variety remain somewhat mysterious to researchers. What we do know is that it’s part of our continent’s native flora, having evolved alongside our other indigenous plants over thousands of years.

A Word About Rarity

Here’s something important to note: convoluted barbula moss has a somewhat uncertain conservation status. Its global conservation ranking of S5T2?Q indicates that scientists aren’t entirely sure about its population status – that question mark tells us there’s still research to be done. This uncertainty suggests we should treat it with respect and avoid disturbing any populations we might encounter.

Is This Moss Good for Your Garden?

While you probably won’t be shopping for this moss at your local nursery, finding it naturally occurring in your landscape is actually a good sign! Native mosses like this one contribute to the ecosystem in several ways:

  • They help prevent soil erosion by creating living mats on surfaces
  • They provide habitat for tiny creatures like springtails and other soil organisms
  • They contribute to the overall biodiversity of your yard’s microhabitats
  • They can indicate healthy environmental conditions

How to Identify Convoluted Barbula Moss

Spotting this particular variety requires a keen eye and possibly a hand lens, as mosses can be tricky to distinguish from one another. Look for small, terrestrial moss growing on rocks, tree bark, or fallen logs rather than directly on soil. The convoluted part of its name likely refers to some twist or curl in its structure, though you’ll need to look closely to see the distinguishing features that separate it from its moss cousins.

Supporting Native Moss Populations

The best way to support native mosses like Barbula convoluta var. gallinula is simply to leave them alone when you find them. Here are some moss-friendly practices:

  • Avoid using herbicides or fungicides that could harm these sensitive plants
  • Leave fallen logs and natural rock formations undisturbed when possible
  • Resist the urge to clean up every bit of natural debris in your landscape
  • Consider creating habitat by leaving some areas of your garden a little wilder

The Bigger Picture

While convoluted barbula moss might not be the star of your garden design, it represents something important: the incredible diversity of our native plant communities. These tiny species are threads in the complex web of life that supports everything from soil health to wildlife habitat.

Next time you’re walking through your garden or a natural area, take a moment to look closely at the small stuff. Those little green patches clinging to rocks and bark might just be hosting some of North America’s most ancient and resilient residents – including perhaps this very special variety of barbula moss.

Convoluted Barbula Moss

Classification

Group

Moss

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Bryophyta - Mosses

Subdivision

Musci

Class

Bryopsida - True mosses

Subclass

Bryidae

Order

Pottiales

Family

Pottiaceae Hampe

Genus

Barbula Hedw. - barbula moss

Species

Barbula convoluta Hedw. - convoluted barbula moss

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