North America Native Plant

Haleakala Catchfly

Botanical name: Silene cryptopetala

USDA symbol: SICR

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Haleakala Catchfly: A Lost Treasure of Hawaiian Flora Meet the Haleakala catchfly, a native Hawaiian plant that tells a bittersweet story of island biodiversity. This perennial shrub, scientifically known as Silene cryptopetala, once graced the volcanic slopes of Hawaii but now exists only in historical records and the hopes of ...

Rare plant alert!

Region: Conservation status by state

Status: SH: Status is uncertain but is somewhere between the following rankings: Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘

Haleakala Catchfly: A Lost Treasure of Hawaiian Flora

Meet the Haleakala catchfly, a native Hawaiian plant that tells a bittersweet story of island biodiversity. This perennial shrub, scientifically known as Silene cryptopetala, once graced the volcanic slopes of Hawaii but now exists only in historical records and the hopes of botanists who dream of its rediscovery.

A Plant Lost to Time

Before we dive into growing advice, there’s something important you need to know: the Haleakala catchfly is classified as Possibly Extirpated with a Global Conservation Status of SH. This means it’s known only from historical occurrences, and while there’s still some hope of rediscovery, it hasn’t been seen in the wild for quite some time. So unfortunately, this isn’t a plant you can add to your garden – but its story is worth telling.

Where It Once Called Home

This unique catchfly was endemic to Hawaii, meaning it existed nowhere else on Earth. Its name gives away its specific location – Haleakala, the massive volcanic mountain on the island of Maui. This plant was part of Hawaii’s incredible endemic flora, which evolved in isolation over millions of years.

What We Know About Its Appearance

The Haleakala catchfly was a shrub – a multi-stemmed woody plant that typically stayed under 13-16 feet tall. Like other shrubs, it likely had several stems growing from near the ground level. Beyond this basic growth habit, much about its specific appearance remains a mystery, locked away in historical botanical records.

Why This Plant Matters

You might wonder why we’re talking about a plant you can’t grow. Here’s the thing – the story of Silene cryptopetala is a powerful reminder of what we stand to lose when native habitats disappear. Hawaii has lost more plant species than any other U.S. state, making conservation efforts more critical than ever.

What You Can Do Instead

While you can’t plant the Haleakala catchfly, you can support Hawaiian native plant conservation in other ways:

  • Choose other native Hawaiian plants for your garden if you live in Hawaii
  • Support organizations working to preserve Hawaiian native species
  • Learn about and grow native plants in your own region
  • Spread awareness about the importance of plant conservation

A Message of Hope

The possibly extirpated status means there’s still hope. Botanists continue to search remote areas of Haleakala, and sometimes plants thought lost forever are rediscovered. Until then, the Haleakala catchfly serves as an important reminder that every native species matters, and once they’re gone, they’re gone forever.

While we can’t offer growing tips for this particular plant, we can honor its memory by being better stewards of the native plants that remain. Every native plant we choose for our gardens is a small act of conservation – and who knows? Maybe someday, someone will find a hidden population of Haleakala catchfly thriving in a remote corner of Maui.

Haleakala Catchfly

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Caryophyllaceae Juss. - Pink family

Genus

Silene L. - catchfly

Species

Silene cryptopetala Hillebr. - Haleakala catchfly

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