Native Plants

Clubmoss

Lycopodium ×issleri

USDA symbol: LYIS

perennial subshrub

Lower 48 states: native

If you’ve ever wondered about those ancient-looking, moss-like plants that seem to belong in a prehistoric forest, you might be looking at a clubmoss! Today, we’re exploring one of nature’s more elusive characters: Lycopodium ×issleri, a fascinating native clubmoss that’s as mysterious as it is rare. Despite its common name ...

Discovering the Mysterious Clubmoss: A Rare Native Lycopod

If you’ve ever wondered about those ancient-looking, moss-like plants that seem to belong in a prehistoric forest, you might be looking at a clubmoss! Today, we’re exploring one of nature’s more elusive characters: Lycopodium ×issleri, a fascinating native clubmoss that’s as mysterious as it is rare.

What Exactly Is This Clubmoss?

Despite its common name clubmoss, this little green wonder isn’t actually a moss at all! Clubmosses are lycopods – ancient vascular plants that have been around since before dinosaurs walked the Earth. Think of them as living fossils that decided to stick around and see what all the fuss was about.

Lycopodium ×issleri is what botanists call a hybrid species (that little × symbol is the giveaway). It’s a perennial plant that grows as a forb herb, meaning it’s a non-woody vascular plant that keeps its growing points at or below ground level. Pretty clever survival strategy if you ask me!

Where Can You Find This Elusive Plant?

This native clubmoss calls the lower 48 states home, though it’s currently documented primarily in Maine. Like many of its lycopod relatives, it seems to prefer keeping a low profile and isn’t exactly broadcasting its whereabouts.

  • Species observed
  • No observations

Is It Beneficial to Have in Your Garden?

Here’s where things get interesting – and a bit tricky. While clubmosses can add a unique, primordial charm to naturalized gardens and woodland settings, Lycopodium ×issleri is quite the enigma. There’s limited information available about its specific benefits, growing requirements, or even its exact appearance.

What we do know is that lycopods in general:

  • Add an ancient, mystical quality to woodland gardens
  • Thrive in specialized conditions that many other plants can’t handle
  • Represent an important part of our botanical heritage
  • Can be conversation starters for plant enthusiasts

How to Identify This Mysterious Clubmoss

Since specific identification details for Lycopodium ×issleri are scarce, you’ll want to look for general clubmoss characteristics:

  • Small, scale-like leaves arranged in spirals or opposite patterns
  • Branching stems that often fork or divide
  • A generally moss-like appearance but with a more structured, vascular plant look
  • Spore-producing structures (sporangia) that may appear as small clubs or cones

However, because this is a hybrid species with limited documentation, positive identification would likely require expert botanical knowledge.

Should You Try to Grow It?

Here’s the honest truth: growing Lycopodium ×issleri might be more challenging than finding a unicorn in your backyard. With unknown growing conditions, propagation methods, and limited availability, this isn’t exactly a beginner-friendly plant.

If you’re interested in adding clubmosses to your garden, consider starting with more well-documented native species that are better understood and more readily available. Many other native lycopods can provide similar aesthetic appeal while being more cooperative garden companions.

The Bottom Line

Lycopodium ×issleri represents one of nature’s more secretive characters – a native hybrid clubmoss that keeps its cards close to its chest. While it’s undoubtedly a fascinating piece of our botanical heritage, its mysterious nature makes it more suitable for botanical curiosity than practical gardening.

If you suspect you’ve encountered this rare hybrid in the wild, consider yourself lucky to witness a living piece of ancient plant history. Just remember to look, appreciate, and leave it undisturbed for future generations of plant enthusiasts to discover and wonder about.

Lycopodium ×issleri is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Lycopodium ×issleri is also known as:

Diphasiastrum ×issleri | USDA symbol: DIIS3
Diphasium issleri | USDA symbol: DIIS4
Lycopodium alpinum var. decipiens Syme ex | USDA symbol: LYALD
Lycopodium alpinum ssp. issleri | USDA symbol: LYALI
Lycopodium complanatum ssp. issleri | USDA symbol: LYCOI
Lycopodium complanatum var. pseudoalpinum | USDA symbol: LYCOP7

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Lycopod
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Division: Lycopodiophyta - Lycopods
Class: Lycopodiopsida
Order: Lycopodiales
Family: Lycopodiaceae P. Beauv. ex Mirb. - Club-moss family
Genus: Lycopodium L. - clubmoss

Species: Lycopodium ×issleri (Rouy) Domin [alpinum × complanatum] - clubmoss

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