North America Native Plant

Thorne’s Beaksedge

Botanical name: Rhynchospora thornei

USDA symbol: RHTH

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Thorne’s Beaksedge: A Rare Southeastern Sedge Worth Protecting Meet Thorne’s beaksedge (Rhynchospora thornei), a little-known native sedge that’s quietly fighting for survival in the wetlands of the Southeast. While this perennial grass-like plant might not win any beauty contests in your typical flower garden, it plays a crucial role in ...

Rare plant alert!

Region: Alabama

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ 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) ⚘

Region: Alabama

Thorne’s Beaksedge: A Rare Southeastern Sedge Worth Protecting

Meet Thorne’s beaksedge (Rhynchospora thornei), a little-known native sedge that’s quietly fighting for survival in the wetlands of the Southeast. While this perennial grass-like plant might not win any beauty contests in your typical flower garden, it plays a crucial role in some of our most threatened ecosystems.

Where You’ll Find This Elusive Native

Thorne’s beaksedge calls the southeastern United States home, specifically Alabama, Florida, Georgia, North Carolina, and South Carolina. But don’t expect to stumble across it on your next nature walk – this sedge is quite the specialist when it comes to where it likes to live.

Why This Plant Deserves Our Attention

Here’s where things get serious: Thorne’s beaksedge is considered globally vulnerable with a conservation status of S3. In Alabama, it’s even rarer with an S1 status, meaning it’s critically imperiled in that state. With typically only 21 to 100 occurrences worldwide and between 3,000 and 10,000 individuals total, this little sedge is hanging on by a thread.

What Does It Actually Look Like?

As a member of the sedge family (Cyperaceae), Thorne’s beaksedge is a grass-like perennial that won’t exactly stop traffic with its looks. Like most sedges, it produces small, inconspicuous brownish flower clusters and narrow leaves. It’s the kind of plant that botanists get excited about, but most gardeners might walk right past.

Should You Grow Thorne’s Beaksedge?

This is where we need to have an honest conversation. While we absolutely want to encourage growing native plants, Thorne’s beaksedge presents some unique challenges:

  • Rarity concerns: With its vulnerable status, any plants should only come from responsibly sourced, ethically propagated stock
  • Specialized needs: This sedge requires very specific wetland conditions that are difficult to replicate in typical gardens
  • Limited availability: You’re unlikely to find this at your local nursery
  • Conservation focus: This plant is better suited for restoration projects than ornamental gardening

Growing Conditions for the Dedicated

If you’re involved in wetland restoration or have the perfect bog garden setup, Thorne’s beaksedge thrives in:

  • Consistently wet, acidic soils
  • Bog and wet pine flatwood environments
  • USDA hardiness zones 8-10
  • Areas with high moisture year-round

The Bottom Line

Thorne’s beaksedge is more of a conservation success story waiting to happen than a garden center bestseller. If you’re passionate about protecting rare native plants and have the expertise and proper habitat, consider supporting conservation efforts or restoration projects that include this species. For most gardeners, though, there are plenty of other beautiful, less vulnerable native sedges that can provide similar ecological benefits without the conservation concerns.

The real value of knowing about plants like Thorne’s beaksedge is understanding the incredible diversity of native species that exist in our landscapes – and recognizing that sometimes the best way to help a plant is to protect its wild habitat rather than trying to grow it in our gardens.

Thorne’s Beaksedge

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Cyperaceae Juss. - Sedge family

Genus

Rhynchospora Vahl - beaksedge

Species

Rhynchospora thornei Kral - Thorne's beaksedge

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