North America Non-native Plant

Sporobolus Australasicus

Botanical name: Sporobolus australasicus

USDA symbol: SPAU3

Habit: grass

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

Sporobolus australasicus: A Mysterious Grass Worth Knowing About If you’ve stumbled across the name Sporobolus australasicus in your plant research, you’re likely encountering one of botany’s more elusive characters. This grass species sits in the fascinating world of scientific nomenclature where not every named plant has a clear, well-documented story ...

Sporobolus australasicus: A Mysterious Grass Worth Knowing About

If you’ve stumbled across the name Sporobolus australasicus in your plant research, you’re likely encountering one of botany’s more elusive characters. This grass species sits in the fascinating world of scientific nomenclature where not every named plant has a clear, well-documented story to tell.

What We Know About This Grass

Sporobolus australasicus belongs to the grass family (Poaceae), placing it among the dropseed grasses that make up the Sporobolus genus. These grasses are typically known for their fine-textured foliage and delicate, airy seed heads that dance in the breeze.

However, here’s where things get interesting—and a bit mysterious. Despite its scientific name suggesting an Australian connection (australasicus typically refers to the Australasian region), concrete information about this specific species is remarkably scarce in current botanical literature.

The Challenge of Plant Identification

This situation highlights an important reality in the plant world: not every scientific name you encounter represents a widely recognized or well-documented species. Some possibilities for the limited information include:

  • The name may be historical or outdated
  • It could be a regional variant that’s been reclassified
  • It might be an extremely rare species with limited documentation
  • The name could be a synonym for another, better-known species

What This Means for Gardeners

If you’re interested in growing native grasses, especially those from the Sporobolus genus, your best bet is to:

  • Consult with local native plant societies
  • Contact botanical gardens or universities in your area
  • Work with reputable native plant nurseries
  • Consider well-documented Sporobolus species instead

Alternative Sporobolus Options

Rather than searching for this elusive species, consider exploring other members of the Sporobolus genus that are well-documented and readily available. Many dropseed grasses offer excellent ornamental value with their fine textures, drought tolerance, and wildlife benefits.

The world of native grasses is rich and diverse, with plenty of well-studied options that can bring beauty, ecological value, and low-maintenance appeal to your landscape.

The Bottom Line

While Sporobolus australasicus remains something of a botanical puzzle, this doesn’t diminish the value of exploring native grasses for your garden. Sometimes the most rewarding gardening adventures begin with a bit of mystery and lead us to discover other wonderful plants we might never have considered otherwise.

If you have specific information about Sporobolus australasicus or have encountered this plant in the wild, consider contributing to citizen science projects or contacting botanical institutions—you might help solve this green mystery!

Sporobolus Australasicus

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

Sporobolus R. Br. - dropseed

Species

Sporobolus australasicus Domin

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