North America Native Plant

Elatostema Calcareum

Botanical name: Elatostema calcareum

USDA symbol: ELCA27

Native status: Native to Pacific Basin excluding Hawaii  

Elatostema calcareum: A Mysterious Pacific Native Worth Knowing If you’re a plant enthusiast who loves discovering lesser-known native species, Elatostema calcareum might just pique your curiosity. This intriguing plant, known locally as dechus in Palau, represents one of those fascinating botanical mysteries that remind us how much we still have ...

Elatostema calcareum: A Mysterious Pacific Native Worth Knowing

If you’re a plant enthusiast who loves discovering lesser-known native species, Elatostema calcareum might just pique your curiosity. This intriguing plant, known locally as dechus in Palau, represents one of those fascinating botanical mysteries that remind us how much we still have to learn about our planet’s diverse flora.

Where Does Elatostema calcareum Call Home?

This native gem calls the Pacific Basin home, specifically thriving in the tropical paradises of Guam and Palau. It’s part of the rich botanical heritage of these Pacific islands, having evolved alongside the unique ecosystems of this region. Unlike many Pacific plants, this species notably doesn’t extend its range to Hawaii, making it a true specialist of the western Pacific islands.

The Challenge of Growing a Plant Shrouded in Mystery

Here’s where things get interesting – and admittedly a bit frustrating for us gardening enthusiasts. Elatostema calcareum is one of those plants that has managed to fly under the radar of most horticultural studies. While we know it exists and where it grows naturally, detailed information about its growing requirements, appearance, and garden performance remains surprisingly scarce.

This lack of information presents both a challenge and an opportunity. For the adventurous gardener, it means you’d be venturing into relatively uncharted territory. For the practical gardener, it might mean this isn’t the best choice for your weekend planting project.

What We Do Know

While specific growing details remain elusive, we can make some educated assumptions based on its native habitat:

  • It’s adapted to tropical Pacific island conditions
  • It likely prefers warm, humid environments year-round
  • As a native species, it presumably plays a role in local ecosystems
  • It goes by dechus in Palauan culture, suggesting some local significance

Should You Try Growing Elatostema calcareum?

The honest answer is: it’s complicated. Without clear information about its growth habits, care requirements, or even basic characteristics like size and appearance, recommending this plant for garden use would be irresponsible. However, this doesn’t mean you should write it off entirely.

If you’re passionate about native Pacific plants and have experience growing challenging or unusual species, Elatostema calcareum could be an exciting research project. Just remember that you’d essentially be pioneering its cultivation, which means accepting that success isn’t guaranteed.

Better-Known Pacific Native Alternatives

If you’re drawn to the idea of growing Pacific native plants but want something with more established growing information, consider exploring other well-documented species from the region. Many Pacific islands have native plants that are better understood and more readily available to gardeners.

The Bigger Picture

Plants like Elatostema calcareum remind us that there’s still so much to discover about our native flora. While this particular species might not be ready for mainstream gardening, it represents the incredible diversity of plant life that exists in specialized habitats around the world.

Perhaps someday, dedicated botanists and horticulturists will unlock the secrets of growing this Pacific native. Until then, it remains one of those tantalizing botanical mysteries that keeps plant lovers like us endlessly curious about the natural world.

For now, if you’re interested in supporting Pacific native plants, consider getting involved with botanical research organizations or conservation groups working in the Pacific region. Who knows? You might just help solve the puzzle of Elatostema calcareum.

Elatostema Calcareum

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Hamamelididae

Order

Urticales

Family

Urticaceae Juss. - Nettle family

Genus

Elatostema J.R. Forst. & G. Forst.

Species

Elatostema calcareum Merr.

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