North America Native Plant

Lophozia Longidens Arctica

Botanical name: Lophozia longidens arctica

USDA symbol: LOLOA

Habit: nonvascular

Native status: Native to North America  

Lophozia longidens arctica: A Rare Arctic Liverwort Worth Knowing Ever heard of Lophozia longidens arctica? Don’t worry if you haven’t – this tiny plant is one of nature’s more elusive characters. This fascinating liverwort represents a special arctic subspecies that most of us will never encounter in our backyard gardens, ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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) ⚘ Subspecies or variety is 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. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Lophozia longidens arctica: A Rare Arctic Liverwort Worth Knowing

Ever heard of Lophozia longidens arctica? Don’t worry if you haven’t – this tiny plant is one of nature’s more elusive characters. This fascinating liverwort represents a special arctic subspecies that most of us will never encounter in our backyard gardens, but it’s worth understanding for its unique place in North America’s native plant community.

What Exactly Is Lophozia longidens arctica?

Lophozia longidens arctica is a liverwort, which puts it in the same plant family as mosses and hornworts – collectively known as bryophytes. Think of liverworts as the garden’s tiny, unsung heroes that have been quietly doing their job for millions of years. Unlike the flowering plants we’re used to, liverworts are small, green, and decidedly low-key in their appearance.

This particular species is herbaceous and typically grows attached to solid surfaces like rocks or pieces of wood rather than directly in soil. It’s a terrestrial plant, meaning it lives on land (as opposed to floating in water), but it requires very specific conditions to thrive.

Where Does It Call Home?

As a native North American species, Lophozia longidens arctica has earned its place in our continent’s natural heritage. The arctica in its name gives away its preference for harsh, cold environments that most other plants simply can’t handle. This liverwort has adapted to survive in some of the most challenging conditions on the continent.

Is This Liverwort Right for Your Garden?

Here’s where we need to have a frank conversation. Lophozia longidens arctica carries a conservation status that indicates it’s quite rare, which means a few important things for gardeners:

  • It’s not readily available through typical plant sources
  • It requires very specific arctic conditions that most gardens cannot provide
  • If you do encounter it in the wild, it should be left undisturbed due to its rarity
  • Any cultivation attempts should only use responsibly sourced material

The reality is that this isn’t a plant most gardeners will be growing intentionally. Its specialized arctic habitat requirements make it unsuitable for typical garden conditions, even in northern climates.

Benefits to the Ecosystem

While Lophozia longidens arctica might not be destined for your garden border, it plays important ecological roles in its native arctic habitats. Like other liverworts, it likely contributes to soil formation and provides microscopic habitat for tiny organisms that form the base of arctic food webs.

How to Identify This Rare Liverwort

If you’re fortunate enough to encounter this species during arctic travels or research, you’ll be looking for a small, green plant growing on rocks or woody surfaces. Like other liverworts, it will be low-growing and may appear somewhat flattened or leafy, depending on its specific growth form.

However, positive identification of this rare subspecies would require expert knowledge and likely microscopic examination, so if you think you’ve spotted it, consider documenting the location and consulting with local botanists or bryologists.

The Bottom Line for Gardeners

Lophozia longidens arctica is more of a appreciate from afar plant than a grow at home option. Its rarity and specialized habitat needs make it unsuitable for garden cultivation, but understanding plants like this helps us appreciate the incredible diversity of North America’s native flora.

If you’re interested in incorporating native bryophytes into your landscape, consider looking for more common and readily available moss species that are native to your specific region. These can provide similar ecological benefits while being much more suitable for garden conditions.

Sometimes the most valuable plants are the ones that remind us how much incredible biodiversity exists beyond our garden gates!

Lophozia Longidens Arctica

Classification

Group

Liverwort

Kingdom

Plantae - Plants

Subkingdom
Superdivision
Division

Hepaticophyta - Liverworts

Subdivision

Hepaticae

Class

Hepaticopsida

Subclass

Jungermanniae

Order

Jungermanniales

Family

Jungermanniaceae Rchb.

Genus

Lophozia (Dumort.) Dumort.

Species

Lophozia longidens (Lindb.) Macoun

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