North America Native Plant

Clubmoss

Botanical name: Huperzia ×gillettii

USDA symbol: HUGI

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Meet Huperzia ×gillettii: Hawaii’s Mysterious Hybrid Clubmoss If you’ve ever wondered about those peculiar, primitive-looking plants that seem stuck somewhere between moss and fern, you’ve probably encountered a clubmoss! Today, we’re diving into the fascinating world of Huperzia ×gillettii, a unique hybrid clubmoss that calls the beautiful Hawaiian islands home. ...

Meet Huperzia ×gillettii: Hawaii’s Mysterious Hybrid Clubmoss

If you’ve ever wondered about those peculiar, primitive-looking plants that seem stuck somewhere between moss and fern, you’ve probably encountered a clubmoss! Today, we’re diving into the fascinating world of Huperzia ×gillettii, a unique hybrid clubmoss that calls the beautiful Hawaiian islands home.

What Exactly Is a Clubmoss?

Despite its common name clubmoss, this plant isn’t actually a moss at all! Clubmosses belong to an ancient group of plants called lycopods, which have been around for about 400 million years. Think of them as living fossils that give us a glimpse into what Earth’s plant life looked like long before dinosaurs roamed the planet.

Huperzia ×gillettii is classified as a forb herb, meaning it’s a vascular plant without significant woody tissue above or at ground level. The × symbol in its name is a dead giveaway that this is a hybrid species, born from the crossing of two different Huperzia species.

Where You’ll Find This Hawaiian Native

This perennial clubmoss is exclusively native to Hawaii, making it a true island endemic. You won’t find Huperzia ×gillettii growing wild anywhere else in the world – it’s as uniquely Hawaiian as hula dancing and poke bowls!

Spotting Huperzia ×gillettii in the Wild

Since this is a hybrid species, detailed information about its specific appearance can be quite limited. However, like other members of the Huperzia genus, it likely shares some common characteristics:

  • Small, needle-like leaves arranged in a spiral pattern
  • Upright or hanging growth habit
  • Reproduces through spores rather than seeds or flowers
  • Primitive, ancient appearance that sets it apart from typical garden plants

Is It Beneficial for Your Garden?

Here’s where things get interesting! As a facultative wetland species, Huperzia ×gillettii can grow in both wetland and non-wetland conditions, making it quite adaptable. However, being a rare hybrid endemic to Hawaii, this isn’t a plant you’re likely to encounter at your local garden center.

While clubmosses don’t offer the flashy flowers that attract pollinators (they reproduce through spores, after all), they do provide:

  • Unique textural interest with their primitive, ancient appearance
  • Educational value as living examples of early plant evolution
  • Conversation starters for garden visitors curious about unusual plants

The Conservation Angle

As a hybrid species native only to Hawaii, Huperzia ×gillettii represents a unique piece of the islands’ botanical heritage. While we don’t have specific information about its rarity status, hybrid plants are often less common than their parent species, making them particularly special when encountered in their natural habitat.

What This Means for Gardeners

Unless you’re gardening in Hawaii and happen upon this species in the wild, you’re unlikely to cultivate Huperzia ×gillettii in your home garden. But that doesn’t mean you can’t appreciate clubmosses! Many other Huperzia species and related lycopods are available through specialty nurseries and can add that same prehistoric charm to your landscape.

If you’re fascinated by ancient plants and want to add some evolutionary history to your garden, consider looking for other members of the clubmoss family that are more readily available and suited to your local growing conditions.

The Bottom Line

Huperzia ×gillettii may be a bit of a botanical mystery, but it represents something truly special – a living link to Earth’s ancient past, thriving in one of the world’s most isolated island chains. While you might not be planting it in your backyard anytime soon, knowing about this unique hybrid helps us appreciate the incredible diversity of plant life that exists in specialized habitats around the world.

Next time you’re in Hawaii, keep an eye out for unusual, primitive-looking plants. You just might be looking at one of evolution’s most enduring success stories!

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

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 ×gillettii Beitel & W.H. Wagner [serrata × subintegra] - clubmoss

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