North America Native Plant

Monarch Clubmoss

Botanical name: Huperzia ×sulcinervia

USDA symbol: HUSU3

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Synonyms: Huperzia ×helleri (Herter) Kartesz & Gandhi (HUHE2)  âš˜  Huperzia sulcinervia (Spring) Trevis., database artifact (HUSU)  âš˜  Lycopodium ×helleri Herter (LYHE)  âš˜  Lycopodium sulcinervium Spring (LYSU)  âš˜  Urostachys ×helleri (Herter) Herter ex Nessel (URHE)  âš˜  Urostachys sulcinervius (Spring) Herter ex Nessel (URSU)   

Monarch Clubmoss: A Rare Hawaiian Native Worth Knowing Meet the monarch clubmoss (Huperzia ×sulcinervia), a fascinating little plant that’s as unique as its island home. This isn’t your typical garden variety plant – it’s a special hybrid clubmoss that calls Hawaii its exclusive home, and understanding what makes it tick ...

Monarch Clubmoss: A Rare Hawaiian Native Worth Knowing

Meet the monarch clubmoss (Huperzia ×sulcinervia), a fascinating little plant that’s as unique as its island home. This isn’t your typical garden variety plant – it’s a special hybrid clubmoss that calls Hawaii its exclusive home, and understanding what makes it tick can help us appreciate the incredible diversity of our native plant communities.

What Exactly Is a Clubmoss?

Don’t let the name fool you – clubmosses aren’t actually mosses at all! They’re ancient vascular plants that have been around since before dinosaurs roamed the earth. Think of them as living fossils that have figured out how to thrive in their own special way. Unlike true mosses, clubmosses have a proper vascular system to move water and nutrients around, but they don’t produce flowers or seeds like most plants we’re familiar with.

The monarch clubmoss is what botanists call a forb herb, which is a fancy way of saying it’s a non-woody perennial plant. It lacks the thick, woody stems you’d find on shrubs or trees, instead maintaining a more delicate, herbaceous structure throughout its life.

Where to Find This Hawaiian Endemic

This particular clubmoss is a true Hawaiian native, found exclusively in the Hawaiian Islands. It’s what we call an endemic species – meaning it evolved in Hawaii and exists nowhere else on Earth naturally. This makes it a pretty special plant in the grand scheme of biodiversity!

The Wetland Connection

One interesting characteristic of monarch clubmoss is its flexibility when it comes to moisture. It’s classified as facultative for wetland status in Hawaii, which means you might find it both in wetter areas and in more typical terrestrial spots. This adaptability likely helps it survive in Hawaii’s diverse microclimates, from misty mountain slopes to more moderate elevations.

Is It Beneficial for Gardens?

Here’s where things get a bit tricky. While monarch clubmoss is undoubtedly a fascinating native plant, it’s not commonly available in the nursery trade, and there’s limited information about its cultivation requirements. This suggests it may have very specific growing needs that make it challenging to grow outside its natural habitat.

For most home gardeners, this clubmoss would be more of a lucky find during a nature hike than a planned garden addition. Its rarity and specialized nature mean it’s best appreciated in its wild state rather than attempted in home landscapes.

How to Identify Monarch Clubmoss

If you’re exploring Hawaiian forests and think you might have spotted this rare native, look for these characteristics:

  • Small, perennial herb without woody stems
  • Vascular plant structure (more robust than true moss)
  • Found in various moisture conditions, from wet to moderately dry areas
  • Exclusively found in Hawaiian native ecosystems

Remember, positive identification of rare native plants often requires expert knowledge, especially with clubmosses which can be challenging to distinguish from one another.

Conservation and Appreciation

As a Hawaiian endemic, monarch clubmoss represents part of the unique evolutionary story of the Hawaiian Islands. While it might not be destined for your backyard garden, understanding and appreciating these specialized native plants helps us better value the incredible biodiversity that makes Hawaii’s ecosystems so special.

If you’re passionate about Hawaiian natives for your garden, consider working with local native plant societies and nurseries to find more readily available endemic species that can thrive in cultivation while supporting local ecosystems.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Hawaii

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Monarch Clubmoss

Classification

Group

Lycopod

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Lycopodiophyta - Lycopods

Subdivision
Class

Lycopodiopsida

Subclass
Order

Lycopodiales

Family

Lycopodiaceae P. Beauv. ex Mirb. - Club-moss family

Genus

Huperzia Bernh. - clubmoss

Species

Huperzia ×sulcinervia (Spring) Trevis. (pro sp.) [serrata × somae] - monarch clubmoss

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