North America Native Plant

Forest Tetramolopium

Botanical name: Tetramolopium consanguineum leptophyllum

USDA symbol: TECOL

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Forest Tetramolopium: A Rare Hawaiian Treasure Worth Protecting Meet the forest tetramolopium (Tetramolopium consanguineum leptophyllum), one of Hawaii’s most elusive native shrubs. This perennial woody plant is so rare that even dedicated botanists consider it a special find. If you’re dreaming of adding this beauty to your garden, we need ...

Rare plant alert!

Region: Conservation status by state

Status: S1T1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Forest Tetramolopium: A Rare Hawaiian Treasure Worth Protecting

Meet the forest tetramolopium (Tetramolopium consanguineum leptophyllum), one of Hawaii’s most elusive native shrubs. This perennial woody plant is so rare that even dedicated botanists consider it a special find. If you’re dreaming of adding this beauty to your garden, we need to have an important conversation first.

What Makes Forest Tetramolopium Special

This Hawaiian endemic belongs to the remarkable silversword family, a group of plants that evolved uniquely in the Hawaiian Islands. Forest tetramolopium is a multi-stemmed shrub that typically grows less than 13-16 feet tall, with several stems emerging from or near the ground. True to its name, this species calls Hawaii’s forests home, where it has adapted to very specific environmental conditions over thousands of years.

Where You’ll Find It (If You’re Lucky)

Forest tetramolopium is found exclusively in Hawaii, making it a true island endemic. This shrub has chosen some pretty particular real estate – it’s naturally restricted to forest environments where conditions are just right for its survival.

The Reality Check: Why You Probably Shouldn’t Plant It

Here’s the important part: Forest tetramolopium has a Global Conservation Status of S1T1, which indicates it’s extremely rare. This isn’t just hard to find at the nursery rare – this is conservationists are working to prevent extinction rare.

For this reason, we strongly recommend against attempting to cultivate forest tetramolopium unless you’re working with conservation professionals and have access to responsibly sourced material. Even then, cultivation should only be undertaken as part of legitimate conservation efforts.

What This Means for Your Garden

While you can’t (and shouldn’t) plant forest tetramolopium in your landscape, you can still support Hawaiian native plants! Consider these alternatives that capture the spirit of Hawaii’s unique flora:

  • Other Tetramolopium species that are less rare
  • Native Hawaiian shrubs suited to your specific location
  • Plants from the broader silversword alliance that are available through ethical sources

How You Can Help

Instead of trying to grow this rare beauty, consider supporting conservation efforts that protect forest tetramolopium in its natural habitat. Here are meaningful ways to contribute:

  • Support organizations working to preserve Hawaiian forest ecosystems
  • Choose native Hawaiian plants that are sustainably propagated for your garden
  • Learn about and advocate for habitat protection in Hawaii
  • If you’re in Hawaii, participate in native plant restoration projects

The Bottom Line

Forest tetramolopium represents something precious – a unique evolutionary story written in the forests of Hawaii. While we can’t invite this particular species into our gardens, we can celebrate its existence and work to ensure it continues to thrive in its natural home. Sometimes the best way to love a plant is to admire it from afar and protect the wild spaces where it belongs.

Remember, there are plenty of other native Hawaiian plants that would love to join your garden and don’t come with conservation concerns. Let’s save our cultivation enthusiasm for species that can handle a little extra attention!

Forest Tetramolopium

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Tetramolopium Nees - tetramolopium

Species

Tetramolopium consanguineum (A. Gray) Hillebr. - forest tetramolopium

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