North America Native Plant

Hall’s Bruchia Moss

Botanical name: Bruchia hallii

USDA symbol: BRHA2

Habit: nonvascular

Native status: Native to North America  

Hall’s Bruchia Moss: A Tiny Treasure Worth Protecting Meet Hall’s bruchia moss (Bruchia hallii), one of nature’s smallest and most elusive botanical gems. This tiny moss might not catch your eye like a showy wildflower, but it plays an important role in our native ecosystems and deserves our attention—especially since ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: 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) ⚘

Hall’s Bruchia Moss: A Tiny Treasure Worth Protecting

Meet Hall’s bruchia moss (Bruchia hallii), one of nature’s smallest and most elusive botanical gems. This tiny moss might not catch your eye like a showy wildflower, but it plays an important role in our native ecosystems and deserves our attention—especially since it’s become increasingly rare.

What Exactly Is Hall’s Bruchia Moss?

Hall’s bruchia moss is a bryophyte, which puts it in the same plant family as other mosses, liverworts, and hornworts. These are some of the most ancient plants on Earth, and they’re quite different from the flowering plants we’re used to seeing in our gardens. Instead of roots, stems, and leaves like traditional plants, bryophytes have simpler structures that help them absorb water and nutrients directly from their surroundings.

This particular moss is native to North America and forms small, terrestrial patches. Unlike some mosses that prefer to grow on tree bark or rocks, Hall’s bruchia moss is a ground-dweller that often attaches itself to soil or other solid surfaces.

Where Can You Find It?

Hall’s bruchia moss calls the southeastern United States home, with populations scattered across states like North Carolina, South Carolina, Georgia, Florida, Alabama, Mississippi, Louisiana, and Texas. However, don’t expect to stumble across it on your next nature walk—this moss is quite the hide-and-seek champion.

A Conservation Concern

Here’s where things get serious: Hall’s bruchia moss has a Global Conservation Status of S2, which means it’s considered imperiled. This classification indicates that the species is extremely rare, with typically only 6 to 20 known occurrences and somewhere between 1,000 to 3,000 individual plants remaining. That makes each patch of this moss precious from a conservation standpoint.

Is It Beneficial for Your Garden?

While Hall’s bruchia moss won’t add dramatic color or height to your landscape, it does contribute to biodiversity in subtle ways. Mosses like this one help:

  • Prevent soil erosion by creating a protective ground cover
  • Retain moisture in the soil
  • Provide microhabitats for tiny invertebrates and other small creatures
  • Contribute to the overall ecological health of native plant communities

However, this isn’t a moss you should consider adding to your garden. Given its imperiled status, it’s best appreciated in its natural habitat rather than cultivated.

How to Identify Hall’s Bruchia Moss

Identifying Hall’s bruchia moss requires a keen eye and possibly a magnifying glass, as it forms very small patches on the ground. Look for:

  • Tiny, terrestrial moss growing directly on soil or attached to solid surfaces
  • Small, inconspicuous patches rather than large carpets
  • Growth in southeastern US habitats, particularly in areas with specific soil conditions

If you think you’ve spotted this rare moss, consider documenting your find and reporting it to local botanists or conservation organizations—your discovery could be scientifically valuable!

Supporting Moss Conservation

Rather than trying to grow Hall’s bruchia moss in your garden, you can support moss conservation in other ways:

  • Create moss-friendly conditions for common native moss species in shaded, moist areas of your landscape
  • Avoid using chemicals that might harm bryophyte communities
  • Support habitat conservation efforts in the southeastern United States
  • Learn about and appreciate the role of bryophytes in healthy ecosystems

Hall’s bruchia moss may be small, but it represents something much larger—the incredible diversity of plant life that surrounds us and the importance of protecting even the tiniest members of our native flora. While you won’t be planting this particular moss in your garden, you can certainly cultivate an appreciation for the remarkable world of bryophytes that exists right under our feet.

Hall’s Bruchia Moss

Classification

Group

Moss

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Bryophyta - Mosses

Subdivision

Musci

Class

Bryopsida - True mosses

Subclass

Bryidae

Order

Dicranales

Family

Bruchiaceae Schimp.

Genus

Bruchia Schwägr. - bruchia moss

Species

Bruchia hallii Austin - Hall's bruchia moss

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