North America Non-native Plant

Tridens Brasiliensis

Botanical name: Tridens brasiliensis

USDA symbol: TRBR14

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

Tridens brasiliensis: The Mysterious Brazilian Grass If you’ve stumbled upon the name Tridens brasiliensis while researching native grasses, you’ve discovered one of botany’s more enigmatic characters. This grass species belongs to the Tridens genus, a group of perennial grasses that includes several North and South American species, but T. brasiliensis ...

Tridens brasiliensis: The Mysterious Brazilian Grass

If you’ve stumbled upon the name Tridens brasiliensis while researching native grasses, you’ve discovered one of botany’s more enigmatic characters. This grass species belongs to the Tridens genus, a group of perennial grasses that includes several North and South American species, but T. brasiliensis itself remains something of a botanical mystery.

What We Know About This Elusive Grass

Tridens brasiliensis is classified as a monocot and belongs to the grass family (Poaceae). Like other members of its genus, it’s a grass or grass-like plant, but beyond this basic classification, detailed information about this particular species is surprisingly scarce in mainstream botanical literature and gardening resources.

The Challenge of Growing Unknown Species

Here’s where things get interesting (and a bit frustrating for curious gardeners): reliable information about T. brasiliensis’s native range, growing requirements, and garden performance is extremely limited. This presents a real challenge for anyone interested in cultivating this species.

Why Information Might Be Limited

There are several reasons why you might be having trouble finding detailed growing information about Tridens brasiliensis:

  • It may be a rarely studied or documented species
  • The species might have limited distribution in the wild
  • It could be known by different names in different regions
  • Limited cultivation history means fewer gardening resources exist

What This Means for Gardeners

If you’re specifically interested in Tridens brasiliensis, you might want to consider these alternatives while you search for more information:

Better-documented Tridens species: Look into other members of the Tridens genus that have more established cultivation information, such as Tridens flavus (purpletop tridens) if you’re in North America.

Native grass alternatives: Consider well-documented native grasses from your region that can provide similar ecological benefits with proven garden performance.

A Word of Caution

When dealing with lesser-known plant species, especially those with limited cultivation information, it’s important to:

  • Source plants only from reputable, ethical suppliers
  • Avoid collecting from wild populations
  • Start with small trial plantings to observe behavior in your garden
  • Connect with botanical institutions or native plant societies for guidance

The Bottom Line

Tridens brasiliensis remains an intriguing but poorly documented grass species. While the mystery adds to its appeal, the lack of cultivation information makes it a challenging choice for most gardeners. If you’re drawn to unique grasses, consider starting with better-known native species that can provide proven benefits to your garden ecosystem while you continue your search for information about this elusive Brazilian grass.

Sometimes the most responsible approach with rare or poorly understood species is patience – waiting for more research and cultivation experience to become available before adding them to our gardens.

Tridens Brasiliensis

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 brasiliensis (Nees ex Steud.) Parodi

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