North America Native Plant

Connarus Semidecandrus Var. Gaudichaudii

Botanical name: Connarus semidecandrus var. gaudichaudii

USDA symbol: COSEG

Native status: Native to Pacific Basin excluding Hawaii  

Connarus semidecandrus var. gaudichaudii: A Pacific Island Native Worth Knowing Meet one of the Pacific’s more mysterious native plants: Connarus semidecandrus var. gaudichaudii. While you might not trip over this tongue-twisting botanical name at your local nursery, this intriguing species deserves a spot in our conversation about Pacific Island gardening ...

Connarus semidecandrus var. gaudichaudii: A Pacific Island Native Worth Knowing

Meet one of the Pacific’s more mysterious native plants: Connarus semidecandrus var. gaudichaudii. While you might not trip over this tongue-twisting botanical name at your local nursery, this intriguing species deserves a spot in our conversation about Pacific Island gardening and native plant conservation.

What’s in a Name?

In Palau, locals know this plant as chemcherasech, which rolls off the tongue much easier than its scientific moniker! Unfortunately, this species doesn’t have a widely recognized English common name, which tells us something about how rarely it’s cultivated outside its native habitat.

Where Does It Call Home?

This Pacific native has a pretty exclusive address list. You’ll find Connarus semidecandrus var. gaudichaudii naturally growing in Guam and Palau, where it’s part of the native flora that has evolved to thrive in tropical Pacific conditions. It’s native to the broader Pacific Basin, though notably absent from Hawaii.

The Challenge of Growing a Mystery Plant

Here’s where things get interesting (and a bit frustrating for eager gardeners). This particular variety of Connarus is something of an enigma in the horticultural world. While we know it exists and where it grows naturally, detailed information about its specific growing requirements, mature size, and garden performance is surprisingly scarce.

What we can tell you is that as a Pacific island native, it likely prefers:

  • Warm, tropical conditions year-round
  • High humidity levels
  • Well-draining soil
  • Protection from harsh winds

Should You Try Growing It?

If you’re gardening in Guam, Palau, or similar tropical Pacific climates, this native species could be a wonderful addition to a conservation-minded landscape. Supporting native plants helps preserve local ecosystems and provides habitat for native wildlife.

However, for gardeners elsewhere, the lack of available information and likely unavailability of plants or seeds makes this a challenging choice. You might consider looking into other Connarus species or similar Pacific natives that are better documented and more readily available.

The Bigger Picture

Plants like Connarus semidecandrus var. gaudichaudii remind us that there’s still so much we don’t know about our planet’s botanical diversity. Many native species, especially those from smaller Pacific islands, remain understudied and underutilized in cultivation.

If you’re passionate about Pacific island plants or native species conservation, consider connecting with local botanical gardens, universities, or conservation organizations in Guam and Palau. They might have more specific knowledge about this intriguing native and could use support in their conservation efforts.

The Bottom Line

While we can’t give you a detailed growing guide for this particular plant (yet!), we can appreciate it as part of the rich tapestry of Pacific island biodiversity. Sometimes the most valuable plants are the ones that remind us how much more there is to discover and protect in our natural world.

If you’re lucky enough to garden in its native range, seek out local expertise and consider this species as part of a broader native plant palette. For the rest of us, it serves as a fascinating reminder of the botanical treasures still waiting to be fully understood and appreciated.

Connarus Semidecandrus Var. Gaudichaudii

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

Rosales

Family

Connaraceae R. Br. - Cannarus family

Genus

Connarus L.

Species

Connarus semidecandrus Jack

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