North America Native Plant

Tristellateia Australasiae

Botanical name: Tristellateia australasiae

USDA symbol: TRAU13

Native status: Native to Pacific Basin excluding Hawaii  

Tristellateia australasiae: A Rare Pacific Island Native Worth Knowing About If you’re a plant enthusiast who loves discovering rare and unusual species, you might have stumbled across the intriguing name Tristellateia australasiae. This lesser-known member of the Malpighiaceae family represents one of those botanical mysteries that makes plant hunting so ...

Tristellateia australasiae: A Rare Pacific Island Native Worth Knowing About

If you’re a plant enthusiast who loves discovering rare and unusual species, you might have stumbled across the intriguing name Tristellateia australasiae. This lesser-known member of the Malpighiaceae family represents one of those botanical mysteries that makes plant hunting so fascinating – and occasionally frustrating!

What Makes This Plant Special?

Tristellateia australasiae is a native plant species with a very specific home range. Unlike many plants that spread across continents, this species calls the Pacific Basin its home, though notably excluding Hawaii. Its natural habitat is quite limited, making it a true regional specialty.

Where Does It Grow Naturally?

This plant has chosen some pretty exclusive real estate for its natural home. You’ll find Tristellateia australasiae growing in just two locations:

  • Guam
  • Palau

That’s it – just these two Pacific island locations! This incredibly restricted range makes it one of those plants that most gardeners will never encounter in the wild.

Should You Try Growing It?

Here’s where things get tricky. While Tristellateia australasiae isn’t listed as invasive or noxious, its extremely limited natural range and lack of available cultivation information make it a challenging choice for most home gardeners. The reality is that very little horticultural information exists about this species, including:

  • Preferred growing conditions
  • Cold hardiness zones
  • Water requirements
  • Mature size
  • Care requirements
  • Propagation methods

The Practical Reality

Unless you happen to live in Guam or Palau, finding this plant for your garden would be nearly impossible. Even if you could locate seeds or plants, growing something outside its native range without understanding its specific needs would be quite challenging.

If you’re drawn to the idea of growing unique Pacific island natives, you might have better luck researching other species from the region that have more established cultivation guidelines and broader availability.

Conservation Considerations

With such a limited natural range, plants like Tristellateia australasiae remind us of the incredible biodiversity that exists in small pockets around our planet. While we don’t have specific information about its conservation status, any plant with such a restricted range deserves our respect and protection in its natural habitat.

The Bottom Line

Tristellateia australasiae represents one of those fascinating botanical footnotes – interesting to know about, but not practical for most gardeners to grow. If you’re interested in supporting Pacific island biodiversity, consider learning more about and supporting conservation efforts in these unique ecosystems instead.

For those seeking unusual plants for their gardens, focusing on better-documented native species from your own region will likely give you more success and contribute to local ecosystem health at the same time!

Tristellateia Australasiae

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Polygalales

Family

Malpighiaceae Juss. - Barbados Cherry family

Genus

Tristellateia Thouars

Species

Tristellateia australasiae Rich.

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