North America Native Plant

Crumia Moss

Botanical name: Crumia

USDA symbol: CRUMI

Habit: nonvascular

Native status: Native to North America  

Crumia Moss: A Mystery in the Moss World If you’ve stumbled across the name crumia moss in your native plant research, you might be scratching your head trying to find more information about this elusive bryophyte. Here’s what we know about this mysterious moss and why it’s proving so hard ...

Crumia Moss: A Mystery in the Moss World

If you’ve stumbled across the name crumia moss in your native plant research, you might be scratching your head trying to find more information about this elusive bryophyte. Here’s what we know about this mysterious moss and why it’s proving so hard to pin down.

What is Crumia Moss?

According to available data, Crumia would be classified as a bryophyte – part of that fascinating group of small, non-vascular plants that includes mosses, liverworts, and hornworts. These are the tiny green carpets and cushions you see growing on rocks, tree bark, and other surfaces in nature. Like other bryophytes, crumia moss would be herbaceous and have a preference for attaching to solid surfaces like rocks or wood rather than growing directly in soil.

The Geographic Mystery

While the available information suggests that Crumia is native to North America, the specific geographic distribution remains unknown. This lack of detailed location data is actually quite unusual for well-documented native species.

The Identification Challenge

Here’s where things get interesting (and a bit frustrating for curious gardeners): Crumia doesn’t appear in current botanical databases or moss identification guides. This could mean several things:

  • It might be an outdated scientific name that’s been reclassified
  • It could be a regional common name that’s been confused with the scientific name
  • The identification might be incorrect

What This Means for Your Garden

If you’re looking to add native mosses to your landscape, you’re definitely on the right track! Mosses are incredibly beneficial for gardens and natural areas. They help prevent soil erosion, create habitat for tiny creatures, and add beautiful texture and color to shaded areas. However, since we can’t definitively identify Crumia moss, we can’t provide specific growing advice.

Better Alternatives: Proven Native Mosses

Instead of searching for the elusive Crumia, consider these well-documented native moss options:

  • Sheet moss (Hypnum species) – great for creating green carpets
  • Rock cap moss (Dicranum species) – perfect for rocky areas
  • Cushion moss (Leucobryum species) – forms attractive rounded clumps

The Bottom Line

While Crumia moss remains a botanical mystery, don’t let that discourage your interest in native bryophytes! These fascinating little plants are definitely worth including in your native landscape. Just make sure you’re working with properly identified species from reputable sources. When in doubt, consult with local native plant societies or extension services – they can help you identify the mosses already thriving in your area and suggest the best species for your specific conditions.

Sometimes the best garden discoveries happen when we embrace the mystery and explore what’s actually growing around us!

Crumia 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

Crumia Schof. - crumia 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