Non-native Plants

Rytidosperma Unarede

Rytidosperma unarede

USDA symbol: RYUN

perennial grass

Ever stumbled across a plant name that sounds like it belongs in a fantasy novel? Meet Rytidosperma unarede, a perennial grass that’s about as elusive as a unicorn in the gardening world. While you probably won’t find this one at your local nursery, it’s worth understanding what makes this mysterious ...

Rytidosperma unarede: A Mysterious Native Grass Worth Knowing About

Ever stumbled across a plant name that sounds like it belongs in a fantasy novel? Meet Rytidosperma unarede, a perennial grass that’s about as elusive as a unicorn in the gardening world. While you probably won’t find this one at your local nursery, it’s worth understanding what makes this mysterious graminoid special.

What Exactly Is Rytidosperma unarede?

Rytidosperma unarede is a perennial grass that belongs to the diverse world of graminoids—that’s fancy talk for grass and grass-like plants. You might also see it listed under its synonym, Danthonia unarede Raoul, named after the French botanist who first described it.

This plant falls into that category of species that botanists know exists but about which gardeners have precious little practical information. It’s like the quiet kid in the back of the class—definitely there, but not saying much about itself.

Where Does It Come From?

The geographic distribution of Rytidosperma unarede remains largely unknown, though the synonym suggests possible connections to New Zealand flora. Without clear documentation of its native range, we’re left piecing together botanical breadcrumbs.

Should You Try Growing It?

Here’s where things get tricky. With so little information available about this species, including its:

  • Growing conditions and requirements
  • Hardiness zones
  • Availability in the nursery trade
  • Conservation status
  • Potential invasiveness

We’d recommend extreme caution before attempting to grow Rytidosperma unarede. The lack of readily available information could indicate this is a rare species that should be left to conservation professionals and botanical gardens.

Better Alternatives for Your Garden

Instead of hunting for this elusive grass, consider these well-documented native alternatives that offer similar grassy textures and ecological benefits:

  • Local native bunch grasses specific to your region
  • Native sedges (Carex species)
  • Regional prairie grasses
  • Native ornamental grasses suited to your climate zone

The Bottom Line

Rytidosperma unarede serves as a perfect reminder that the plant world still holds many mysteries. While our curiosity about unusual species is natural and wonderful, sometimes the most responsible choice is to admire from afar and choose better-understood native plants for our gardens.

If you’re passionate about rare grasses, consider supporting botanical research or conservation organizations that work to understand and protect mysterious species like this one. Your garden will thrive with well-documented natives, and you’ll be contributing to broader conservation efforts at the same time.

Rytidosperma unarede is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Rytidosperma unarede is also known as:

Danthonia unarede | USDA symbol: DAUN2

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Monocot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae Barnhart - Grass family
Genus: Rytidosperma Steud. - wallaby grass

Species: Rytidosperma unarede (Raoul) Connor & Edgar

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