North America Native Plant

Macrocoma Moss

Botanical name: Macrocoma

USDA symbol: MACRO6

Habit: nonvascular

Native status: Native to North America  

Macrocoma Moss: A Mysterious Native Bryophyte If you’ve stumbled across the name macrocoma moss in your native plant research, you’re dealing with one of nature’s more elusive characters. This little-known moss belongs to the fascinating world of bryophytes – those ancient, resilient plants that have been quietly carpeting our planet ...

Macrocoma Moss: A Mysterious Native Bryophyte

If you’ve stumbled across the name macrocoma moss in your native plant research, you’re dealing with one of nature’s more elusive characters. This little-known moss belongs to the fascinating world of bryophytes – those ancient, resilient plants that have been quietly carpeting our planet for millions of years.

What Exactly Is Macrocoma Moss?

Macrocoma is a genus of moss native to North America, though you won’t find it featured in most garden center displays or popular landscaping guides. Like all mosses, it’s a bryophyte – a non-vascular plant that doesn’t have true roots, stems, or leaves like the flowering plants we’re more familiar with. Instead, these hardy little plants absorb water and nutrients directly through their surfaces.

What makes mosses like Macrocoma particularly interesting is their preference for attaching themselves to solid surfaces. Rather than growing directly in soil like most plants, you’re more likely to find this moss clinging to rocks, tree bark, or even old wooden structures.

Where Does It Call Home?

While we know Macrocoma moss is native to North America, the specific details of its geographic range remain somewhat mysterious. This isn’t uncommon with lesser-known moss species – many bryophytes fly under the radar of mainstream botanical documentation.

Is Macrocoma Moss Good for Your Garden?

Here’s where things get interesting for native plant enthusiasts. While most mosses can be beneficial additions to natural landscapes, the practical reality with Macrocoma is that it’s not something you can typically purchase or easily cultivate.

If you’re lucky enough to discover this moss already growing in your landscape, consider it a gift! Mosses in general provide several benefits:

  • Natural ground cover that requires no mowing or maintenance
  • Excellent at preventing soil erosion
  • Creates habitat for tiny invertebrates
  • Adds texture and visual interest to shaded areas
  • Requires no fertilizers or pesticides

How to Identify Macrocoma Moss

Since detailed identification characteristics for Macrocoma aren’t widely documented, your best bet for moss identification is to:

  • Look for growth on rocks, wood, or tree bark rather than directly in soil
  • Note the overall growth pattern and color
  • Take detailed photos from multiple angles
  • Consult with local botanists or bryophyte specialists
  • Check with your regional native plant society

The Bottom Line

Macrocoma moss represents one of those wonderful mysteries in the native plant world. While we can’t give you specific growing tips or tell you where to buy it, discovering any native moss in your landscape is worth celebrating. These ancient plants have perfected the art of low-maintenance living, and they deserve our respect and protection.

If you’re interested in adding mosses to your native landscape, consider exploring more common species that are better documented and available through specialized native plant sources. Your local extension office or native plant society can point you toward moss species that are known to thrive in your specific region.

Sometimes the most rewarding native plants are the ones that find us, rather than the ones we actively seek out!

Macrocoma Moss

Classification

Group

Moss

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Bryophyta - Mosses

Subdivision

Musci

Class

Bryopsida - True mosses

Subclass

Bryidae

Order

Orthotrichales

Family

Orthotrichaceae Arn.

Genus

Macrocoma (Hornsch. ex Müll. Hal.) Grout - macrocoma moss

Species

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