North America Native Plant

Chapman’s Tridens

Botanical name: Tridens flavus var. chapmanii

USDA symbol: TRFLC

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Synonyms: Triodia chapmanii (Small) Bush (TRCH3)  âš˜  Tridens chapmanii (Small) Chase (TRCH4)   

Chapman’s Tridens: A Rare Native Grass Worth Protecting Meet Chapman’s tridens (Tridens flavus var. chapmanii), a native grass that’s both a botanical treasure and a conservation concern. This perennial beauty represents one of those special plants that reminds us why protecting our native flora matters so much. A True Southeastern ...

Rare plant alert!

Region: New Jersey

Status: S5T3: Subspecies or variety is 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. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘ New Jersey Highlands region ⚘ New Jersey Pinelands region ⚘ Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: New Jersey

Chapman’s Tridens: A Rare Native Grass Worth Protecting

Meet Chapman’s tridens (Tridens flavus var. chapmanii), a native grass that’s both a botanical treasure and a conservation concern. This perennial beauty represents one of those special plants that reminds us why protecting our native flora matters so much.

A True Southeastern Native

Chapman’s tridens calls the southeastern United States home, naturally occurring across a impressive range that spans fifteen states. You’ll find this grass growing from the coastal plains of Delaware down to the Gulf states, stretching west into Texas and north through the southeastern highlands. Its native range includes Alabama, Arkansas, Delaware, Florida, Georgia, Louisiana, Mississippi, Missouri, New Jersey, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, and Virginia.

Why This Grass Deserves Your Attention

Here’s where things get serious: Chapman’s tridens isn’t just any native grass. It carries a Global Conservation Status that signals concern for its long-term survival. In New Jersey, it’s listed as endangered and receives special protection status in both the Pinelands and Highlands regions. This rarity makes it both precious and challenging for gardeners who want to include it in their landscapes.

But don’t let its rarity status discourage you entirely. When sourced responsibly, this native grass can be a meaningful addition to restoration projects and specialized native gardens. As a true native, it has co-evolved with local wildlife and represents an authentic piece of your region’s natural heritage.

What You’re Getting

As a perennial grass, Chapman’s tridens offers the kind of lasting presence that makes native gardening so rewarding. It belongs to the same family as other beloved native grasses, bringing that distinctive texture and movement that only grasses can provide to a landscape.

You might also see this plant listed under its scientific synonyms, including Triodia chapmanii and Tridens chapmanii, so don’t be confused if you encounter these names in older botanical references.

Growing Chapman’s Tridens Responsibly

If you’re considering adding Chapman’s tridens to your garden, responsible sourcing is absolutely critical. Given its conservation status, you should:

  • Only purchase from reputable native plant nurseries that can verify their stock is responsibly propagated
  • Never collect from wild populations
  • Consider participating in local conservation efforts or seed collection programs led by botanical organizations
  • Connect with native plant societies in your area for guidance on ethical sourcing

The Bigger Picture

While we don’t have detailed information about Chapman’s tridens’ specific growing requirements or wildlife benefits, its status as a native grass suggests it likely supports local ecosystems in ways we’re still learning about. Native grasses often provide seeds for birds, nesting materials, and habitat for insects that form the base of food webs.

If you can’t locate Chapman’s tridens from responsible sources, consider other native grasses from your region that might fill a similar ecological niche. Your local native plant society or extension office can suggest alternatives that offer similar benefits without the conservation concerns.

A Plant Worth Protecting

Chapman’s tridens represents something special in the native plant world – a reminder that even common-seeming plants like grasses can be rare and worthy of protection. Whether you’re able to grow it in your garden or simply appreciate it in its natural habitat, this grass tells the story of our southeastern ecosystems and why native plant conservation matters.

By choosing to learn about and, when possible, grow plants like Chapman’s tridens, you’re participating in the larger effort to preserve our native botanical heritage for future generations. And that’s something worth celebrating, one grass at a time.

Chapman’s Tridens

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

Poaceae Barnhart - Grass family

Genus

Tridens Roem. & Schult. - tridens

Species

Tridens flavus (L.) Hitchc. - purpletop tridens

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