North America Native Plant

Bolander’s Bruchia Moss

Botanical name: Bruchia bolanderi

USDA symbol: BRBO2

Habit: nonvascular

Native status: Native to North America  

Bolander’s Bruchia Moss: A Tiny Treasure Worth Protecting Meet Bolander’s bruchia moss (Bruchia bolanderi), one of nature’s most understated gems hiding in plain sight. This diminutive North American native might not win any beauty contests, but this tiny bryophyte plays an important role in our local ecosystems – and it’s ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Bolander’s Bruchia Moss: A Tiny Treasure Worth Protecting

Meet Bolander’s bruchia moss (Bruchia bolanderi), one of nature’s most understated gems hiding in plain sight. This diminutive North American native might not win any beauty contests, but this tiny bryophyte plays an important role in our local ecosystems – and it’s rarer than you might think.

What Exactly Is Bolander’s Bruchia Moss?

Bolander’s bruchia moss belongs to the fascinating world of bryophytes – those ancient, non-flowering plants that include mosses, liverworts, and hornworts. Unlike the flashy flowering plants that dominate our gardens, this little moss is perfectly content living a quiet life as a terrestrial green carpet, often attaching itself to rocks, fallen logs, or other solid surfaces rather than growing directly in soil.

As a herbaceous plant, it stays soft and green year-round (when conditions are right), never developing the woody stems we see in trees and shrubs. Think of it as nature’s miniature ground cover – humble, persistent, and surprisingly important.

Where Does It Call Home?

This native North American species has made its home primarily in western regions, with California being a key stronghold. However, like many specialized mosses, Bolander’s bruchia has very specific habitat requirements that limit where it can thrive.

A Conservation Concern

Here’s where things get serious: Bolander’s bruchia moss has a Global Conservation Status of S3, meaning it’s considered vulnerable. With only an estimated 21 to 100 known occurrences and somewhere between 3,000 to 10,000 individual plants in existence, this little moss is fighting for survival.

What makes it vulnerable? Like many specialized bryophytes, this moss likely depends on very specific environmental conditions – the right soil chemistry, moisture levels, and habitat stability. When those conditions disappear due to development, climate change, or other disturbances, so does the moss.

Spotting Bolander’s Bruchia Moss in the Wild

If you’re lucky enough to encounter this species during a nature walk, here’s what to look for:

  • Tiny, inconspicuous patches of moss growing on solid surfaces
  • Terrestrial habit (growing on land, not in water)
  • Often found attached to rocks, dead wood, or living tree bark
  • Forms small, low-growing colonies rather than extensive carpets

Remember, proper identification of moss species often requires close examination and expertise, so consider taking photos and consulting with local botanists or naturalists if you think you’ve found something special.

Is It Beneficial for Your Garden?

While Bolander’s bruchia moss isn’t something you can pop into your shopping cart at the garden center, its presence in natural areas near your home is actually a great sign. Mosses like this one contribute to biodiversity, help prevent soil erosion, and serve as indicators of healthy, stable ecosystems.

In your garden, you’re more likely to encounter common moss species that naturally colonize shady, moist areas. These everyday mosses provide many of the same ecological benefits – they create habitat for tiny creatures, help retain moisture, and add that lovely woodland feel to shaded garden spots.

What You Can Do to Help

Since this species is vulnerable, the best thing gardeners can do is:

  • Support habitat conservation in your area
  • Avoid disturbing natural moss communities when you encounter them
  • Create moss-friendly conditions in your own garden to support local bryophyte diversity
  • Report any potential sightings to local botanical societies or conservation groups

The Bigger Picture

Bolander’s bruchia moss might be small, but it represents something much larger: the intricate web of life that exists right under our noses. By learning to appreciate and protect these humble organisms, we become better stewards of the natural world.

While you probably won’t be planting this particular moss in your garden anytime soon, you can certainly create spaces where its more common cousins can thrive. And who knows? By fostering a moss-friendly environment, you might just be providing stepping stones for rare species like Bolander’s bruchia to find new homes in our changing world.

Bolander’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 bolanderi Lesq. - Bolander'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