North America Native Plant

Norway Hygrohypnum Moss

Botanical name: Hygrohypnum norvegicum

USDA symbol: HYNO4

Habit: nonvascular

Native status: Native to North America  

Norway Hygrohypnum Moss: A Rare Northern Beauty Worth Protecting Have you ever stumbled across a delicate, feathery moss growing near a stream and wondered what it might be? If you’re exploring the northern reaches of North America, you might have encountered the elusive Norway hygrohypnum moss (Hygrohypnum norvegicum) – a ...

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) ⚘

Norway Hygrohypnum Moss: A Rare Northern Beauty Worth Protecting

Have you ever stumbled across a delicate, feathery moss growing near a stream and wondered what it might be? If you’re exploring the northern reaches of North America, you might have encountered the elusive Norway hygrohypnum moss (Hygrohypnum norvegicum) – a tiny plant with a big conservation story.

What Is Norway Hygrohypnum Moss?

Norway hygrohypnum moss is a terrestrial green plant that belongs to the fascinating world of bryophytes – the group that includes mosses, hornworts, and liverworts. Unlike the flowering plants we typically think of for our gardens, this moss is always herbaceous and has a particular fondness for attaching itself to solid surfaces like rocks, fallen logs, or other sturdy substrates rather than growing directly in soil.

This isn’t your typical lawn moss. Norway hygrohypnum moss forms intricate, branching patterns that create delicate, lacy mats. Its fine structure and subtle beauty make it a noteworthy species for those interested in the smaller wonders of the plant kingdom.

Where Does It Call Home?

This moss is native to North America, with its range primarily concentrated in the northern boreal regions of Canada and the northern United States. It thrives in cold, moist environments where many other plants struggle to survive.

A Species in Need of Protection

Here’s where things get serious: Norway hygrohypnum moss has a Global Conservation Status of S2, which means it’s considered Imperiled. This classification indicates that the species faces extreme rarity or factors that make it especially vulnerable to disappearing entirely. Typically, there are only 6 to 20 known occurrences of this moss, with few remaining individuals (estimated between 1,000 to 3,000 total).

This rarity status is crucial for gardeners and nature enthusiasts to understand. While you might be tempted to collect or transplant this moss if you’re lucky enough to find it, it’s important to leave it undisturbed in its natural habitat.

Is This Moss Right for Your Garden?

The short answer is no – and here’s why that’s actually a good thing. Norway hygrohypnum moss isn’t suitable for typical garden cultivation for several important reasons:

  • Its imperiled status means any disturbance could harm wild populations
  • It requires very specific environmental conditions that are difficult to replicate
  • It grows naturally in remote, northern locations with unique microclimates
  • Responsible sourcing would be nearly impossible given its rarity

How to Identify Norway Hygrohypnum Moss

If you’re exploring northern wetlands or boreal forests, keep an eye out for these characteristics:

  • Fine, delicate branching patterns that form low, spreading mats
  • Preference for growing on rocks, logs, or other solid surfaces near water
  • Found in moist, shaded environments
  • Small size with intricate, feathery appearance

Its Role in the Ecosystem

While Norway hygrohypnum moss might not benefit pollinators like flowering plants do (mosses don’t produce flowers), it plays important ecological roles in its native habitat. Mosses like this one help prevent erosion, retain moisture in the ecosystem, and provide microhabitats for tiny invertebrates and other small creatures.

What You Can Do to Help

Instead of trying to grow this rare moss in your garden, consider these alternatives:

  • Support local conservation efforts in northern regions where this moss occurs
  • Create habitat for common, locally native moss species in your own garden
  • Practice responsible hiking and nature observation if you visit areas where this moss might be found
  • Learn about and plant other native species that support your local ecosystem

Remember, sometimes the best way to appreciate a rare plant is to admire it from a distance and work to protect its natural habitat. Norway hygrohypnum moss serves as a reminder that even the smallest plants can be precious and worthy of our conservation efforts.

Norway Hygrohypnum Moss

Classification

Group

Moss

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Bryophyta - Mosses

Subdivision

Musci

Class

Bryopsida - True mosses

Subclass

Bryidae

Order

Hypnales

Family

Amblystegiaceae Kindb.

Genus

Hygrohypnum Lindb. - hygrohypmum moss

Species

Hygrohypnum norvegicum (Schimp.) Amann - Norway hygrohypnum moss

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