Native Plants

Remy’s Sandmat

Chamaesyce remyi var. remyi

USDA symbol: CHRER

perennial vine

Hawaii: native

If you’re passionate about Hawaiian native plants and conservation gardening, you may have heard whispers about Remy’s sandmat (Chamaesyce remyi var. remyi). This unassuming little shrub might not win any flashy flower contests, but it holds a special place in Hawaii’s botanical heritage—and it desperately needs our help. Remy’s sandmat ...

Remy’s Sandmat may be listed as rare in your area.
Global Conservation Status

Status: S1T1 | Critically imperiled: Extremely rare. Typically 5 or fewer occurrences or under 1,000 remaining individuals.

Remy’s Sandmat: A Rare Hawaiian Native Worth Protecting

If you’re passionate about Hawaiian native plants and conservation gardening, you may have heard whispers about Remy’s sandmat (Chamaesyce remyi var. remyi). This unassuming little shrub might not win any flashy flower contests, but it holds a special place in Hawaii’s botanical heritage—and it desperately needs our help.

What Makes Remy’s Sandmat Special?

Remy’s sandmat is a perennial shrub that’s as Hawaiian as it gets—this plant is found nowhere else on Earth except in the beautiful islands of Hawaii. It’s what botanists call endemic, meaning it evolved here and calls these islands its one and only home.

This modest plant typically grows as a multi-stemmed woody shrub, usually staying under 13-16 feet tall, though it often grows much smaller. Don’t expect towering grandeur from this one—Remy’s sandmat is more about understated charm and ecological importance than showy display.

  • Species observed
  • No observations

The Reality Check: This Plant is Rare

Here’s where things get serious, fellow gardeners. Remy’s sandmat has a Global Conservation Status of S1T1, which essentially means it’s extremely rare and vulnerable. This isn’t a plant you’ll find at your local nursery, and that’s probably for the best.

If you’re considering adding this species to your garden, please—and we cannot stress this enough—only work with responsibly sourced material from reputable native plant organizations or botanical institutions. Wild collection is absolutely not okay for a plant this rare.

Growing Conditions and Care

Should you be fortunate enough to obtain Remy’s sandmat through proper conservation channels, here’s what you need to know:

  • Climate: Thrives in USDA hardiness zones 10-12 (tropical and subtropical)
  • Sunlight: Prefers full sun to partial shade
  • Soil: Well-draining soils are essential—this plant doesn’t like wet feet
  • Water: Drought tolerant once established, but may need regular water during establishment
  • Wetland status: Classified as Facultative Upland, meaning it usually grows in non-wetland areas but can tolerate some moisture

Garden Role and Landscape Use

In the right setting, Remy’s sandmat can serve as an excellent ground cover or low shrub for native Hawaiian landscapes. It’s particularly valuable for:

  • Native habitat restoration projects
  • Drought-tolerant landscape designs
  • Coastal gardens (where appropriate)
  • Educational gardens focused on Hawaiian flora

This isn’t a plant for every garden—it’s more of a conservation statement piece that shows your commitment to preserving Hawaii’s unique botanical heritage.

The Conservation Gardener’s Perspective

Should you plant Remy’s sandmat? Only if you can do so responsibly. This rare native deserves our respect and protection, not casual cultivation. If you’re passionate about supporting Hawaiian natives, consider these approaches:

  • Connect with local native plant societies and conservation organizations
  • Support botanical gardens and research institutions working with rare Hawaiian plants
  • Focus on more readily available Hawaiian natives for your everyday gardening
  • Volunteer for habitat restoration projects where this species might naturally occur

The Bottom Line

Remy’s sandmat represents something precious: a piece of Hawaii’s evolutionary story that exists nowhere else on our planet. While most of us won’t be growing this rare beauty in our backyards, we can all play a role in ensuring it doesn’t disappear forever.

If you’re drawn to Hawaiian native plants, there are many other wonderful endemic species that are more readily available and equally deserving of our gardening attention. But keep Remy’s sandmat in your thoughts—and maybe your donations—as a reminder of what we stand to lose if we don’t take plant conservation seriously.

After all, some plants are worth more in the wild than in our gardens, and Remy’s sandmat is definitely one of them.

Chamaesyce remyi var. remyi 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. Chamaesyce remyi var. remyi is also known as:

Chamaesyce remyi Croizat & var. kahiliana & | USDA symbol: CHREK2
Chamaesyce remyi Croizat & var. lydgatei & | USDA symbol: CHREL2
Chamaesyce remyi Croizat & var. olokelensis & | USDA symbol: CHREO
Chamaesyce remyi Croizat & var. pteropoda & | USDA symbol: CHREP
Chamaesyce remyi Croizat & var. waimeana & | USDA symbol: CHREW2
Chamaesyce remyi Croizat & var. wahiawana & | USDA symbol: CHREW3
Euphorbia remyi Gray ex | USDA symbol: EURE6
Euphorbia remyi Gray ex var. kahiliana | USDA symbol: EUREK
Euphorbia remyi Gray ex var. lydgatei | USDA symbol: EUREL2
Euphorbia remyi Gray ex var. olokelensis & | USDA symbol: EUREO

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: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Euphorbiales
Family: Euphorbiaceae Juss. - Spurge family
Genus: Chamaesyce Gray - sandmat

Species: Chamaesyce remyi (A. Gray ex Boiss.) Croizat & O. Deg. - Remy's sandmat

Variety: Chamaesyce remyi (A. Gray ex Boiss.) Croizat & O. Deg. var. remyi - Remy's sandmat

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