North America Native Plant

Lamella Pterygoneurum Moss

Botanical name: Pterygoneurum lamellatum

USDA symbol: PTLA2

Habit: nonvascular

Native status: Native to North America  

Synonyms: Pterygoneurum arcticum Steere (PTAR4)   

Lamella Pterygoneurum Moss: A Hardy Arctic Ground Cover for Cold Climate Gardens If you’ve ever wondered about those tiny green carpets that seem to appear magically on disturbed soil in northern gardens, you might have encountered the lamella pterygoneurum moss (Pterygoneurum lamellatum). This unassuming little bryophyte is one of nature’s ...

Lamella Pterygoneurum Moss: A Hardy Arctic Ground Cover for Cold Climate Gardens

If you’ve ever wondered about those tiny green carpets that seem to appear magically on disturbed soil in northern gardens, you might have encountered the lamella pterygoneurum moss (Pterygoneurum lamellatum). This unassuming little bryophyte is one of nature’s quiet champions, working behind the scenes to stabilize soil and create habitat in some pretty harsh conditions.

What Exactly Is Lamella Pterygoneurum Moss?

Lamella pterygoneurum moss is a small, terrestrial moss native to North America’s arctic and subarctic regions. As a bryophyte, it belongs to that fascinating group of plants that includes mosses, liverworts, and hornworts – ancient plants that have been quietly doing their thing for millions of years without flowers, fruits, or traditional roots.

This particular moss gets its lamella name from the distinctive ridged or plate-like structures on its leaves, which help it manage water in its often dry, exposed habitats. You might also encounter it under its scientific synonym, Pterygoneurum arcticum.

Where You’ll Find This Hardy Moss

This cold-loving moss is right at home in North America’s northern regions, thriving in areas that would make many garden plants throw in the trowel. It’s particularly fond of alkaline, well-drained soils and doesn’t mind full sun – quite unusual for a moss!

Why Your Garden Might Benefit from This Little Moss

While you probably won’t be planting lamella pterygoneurum moss intentionally, discovering it in your garden (especially if you live in USDA zones 1-6) is actually good news. Here’s why:

  • Natural soil stabilizer: This moss helps prevent erosion on slopes and disturbed areas
  • Pioneer species: It colonizes bare soil, preparing the way for other plants
  • Low maintenance ground cover: Once established, it requires virtually no care
  • Drought tolerant: Perfect for xeriscaping or areas with poor soil

Spotting Lamella Pterygoneurum Moss in Your Landscape

This moss isn’t going to win any beauty contests – it’s quite small and inconspicuous. Look for:

  • Tiny, grayish-green plants forming loose patches
  • Preference for disturbed, alkaline soils
  • Growth on rocks, old concrete, or compacted earth
  • Presence in sunny, exposed locations (unusual for most mosses)

Working with This Natural Ground Cover

If you discover lamella pterygoneurum moss in your garden, consider yourself lucky to have such a hardy, self-sufficient ground cover. Rather than trying to cultivate it, it’s best to simply appreciate its presence and work around it:

  • Avoid foot traffic on moss patches to prevent damage
  • Don’t fertilize areas where it’s growing (it prefers nutrient-poor conditions)
  • Consider it an indicator of alkaline soil conditions
  • Use it as inspiration for creating naturalized, low-maintenance garden areas

The Bottom Line

Lamella pterygoneurum moss might not be the showstopper you’d choose for your front border, but it’s an excellent example of nature’s ability to find beauty and function in simplicity. If you’re gardening in cold, northern climates, learning to appreciate these small but mighty plants can help you create more sustainable, low-maintenance landscapes that work with nature rather than against it.

Sometimes the best garden helpers are the ones that show up uninvited and ask for nothing in return – just like this humble arctic moss.

Lamella Pterygoneurum 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

Pterygoneurum Jur. - pterygoneurum moss

Species

Pterygoneurum lamellatum (Lindb.) Jur. - lamella pterygoneurum moss

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