North America Native Plant

Bentley’s Coralroot

Botanical name: Corallorhiza bentleyi

USDA symbol: COBE7

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Bentley’s Coralroot: A Rare Appalachian Ghost Orchid You Can’t (and Shouldn’t) Grow Meet one of North America’s most elusive native orchids – Bentley’s coralroot (Corallorhiza bentleyi). This mysterious little plant is like the unicorn of the orchid world: incredibly rare, absolutely fascinating, and completely impossible to grow in your garden. ...

Rare plant alert!

Region: Conservation status by state

Status: S1S2: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Bentley’s Coralroot: A Rare Appalachian Ghost Orchid You Can’t (and Shouldn’t) Grow

Meet one of North America’s most elusive native orchids – Bentley’s coralroot (Corallorhiza bentleyi). This mysterious little plant is like the unicorn of the orchid world: incredibly rare, absolutely fascinating, and completely impossible to grow in your garden. But don’t let that discourage you from learning about this remarkable species!

What Makes Bentley’s Coralroot So Special?

Bentley’s coralroot is a perennial forb that belongs to the orchid family, but it’s unlike any orchid you’ve probably seen before. This fascinating plant has no green leaves and can’t make its own food through photosynthesis. Instead, it’s what scientists call a mycoheterotroph – basically, it’s completely dependent on a partnership with specific underground fungi to survive.

The plant gets its common name from its distinctive coral-like underground structure (called a rhizome) that looks remarkably similar to branching coral. When it does emerge above ground – which happens infrequently and unpredictably – it sends up a single yellowish-brown to purplish stem topped with small, inconspicuous flowers.

Where Does Bentley’s Coralroot Call Home?

This rare native species has an extremely limited range, found only in Virginia and West Virginia. It’s truly an Appalachian endemic, making it a special part of the region’s unique botanical heritage.

Why You Can’t Grow This Beauty (And Why That’s Actually Okay)

Here’s the thing about Bentley’s coralroot – it’s not just difficult to grow, it’s essentially impossible to cultivate successfully. This isn’t a case of needing the right soil pH or perfect watering schedule. This orchid has evolved such a specialized relationship with its environment that it simply cannot survive outside of its natural habitat.

The plant depends on:

  • Specific mycorrhizal fungi found only in undisturbed forest soils
  • Complex forest ecosystem relationships that can’t be replicated
  • Precise environmental conditions that develop over decades or centuries

A Word About Rarity

Bentley’s coralroot has a Global Conservation Status of S1S2, which means it’s critically imperiled to imperiled throughout its range. This rarity status is a red flag that tells us this species needs our protection, not our attempts at cultivation. The few populations that exist are precious and irreplaceable.

If you’re ever lucky enough to spot one of these ghost orchids in the wild, consider yourself incredibly fortunate – and please leave it undisturbed. Taking photos is wonderful, but taking the plant (or even disturbing its habitat) could contribute to its decline.

What This Means for Your Garden

While you can’t grow Bentley’s coralroot, you can still support native orchid conservation by:

  • Planting other native species that support healthy forest ecosystems
  • Supporting organizations working to protect rare plant habitats
  • Learning to identify and appreciate the native orchids that might already be growing near you
  • Choosing responsibly sourced native plants for your landscape

The Bottom Line

Bentley’s coralroot is a reminder that not every beautiful native plant belongs in our gardens – and that’s perfectly fine. Some species are meant to remain wild, thriving in the complex ecosystems they’ve evolved within over thousands of years. By respecting these boundaries, we’re helping ensure that future generations might also have the chance to discover one of these remarkable ghost orchids quietly doing its mysterious work in an Appalachian forest.

Sometimes the best way to honor a native plant is simply to let it be wild.

Bentley’s Coralroot

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Orchidales

Family

Orchidaceae Juss. - Orchid family

Genus

Corallorhiza Gagnebin, orth. cons. - coralroot

Species

Corallorhiza bentleyi Freudenstein - Bentley's coralroot

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