Native Plants

Fringed Grass Of Parnassus

Parnassia fimbriata var. intermedia

USDA symbol: PAFII

perennial forb

Lower 48 states: native

Meet the fringed grass of Parnassus (Parnassia fimbriata var. intermedia), a charming native perennial that’s as intriguing as its name suggests. Despite its common name, this plant isn’t actually a grass at all – it’s a delicate flowering forb that calls the American West home. This particular variety of fringed ...

Fringed Grass Of Parnassus may be listed as rare in your area.
Global Conservation Status

Status: S5T3 | Secure: At low or no risk of extinction in the area due to an extensive range, abundant populations, and with little to no concern of declines or threats.

Fringed Grass of Parnassus: A Rare Western Native Worth Knowing

Meet the fringed grass of Parnassus (Parnassia fimbriata var. intermedia), a charming native perennial that’s as intriguing as its name suggests. Despite its common name, this plant isn’t actually a grass at all – it’s a delicate flowering forb that calls the American West home.

Where You’ll Find This Native Beauty

This particular variety of fringed grass of Parnassus is native to three western states: Idaho, Nevada, and Oregon. As a truly native species to the lower 48 states, it has evolved alongside local wildlife and environmental conditions for thousands of years.

  • Species observed
  • No observations

What Makes It Special

Parnassia fimbriata var. intermedia is classified as a perennial forb – essentially a non-woody flowering plant that comes back year after year. Unlike shrubs or trees, forbs like this one lack significant woody tissue and keep their growing points at or below ground level, helping them survive harsh winters.

You might also encounter this plant listed under its scientific synonyms: Parnassia cirrata Piper var. intermedia or Parnassia intermedia Rydb. These are simply different names botanists have used over the years as they’ve refined their understanding of plant relationships.

A Word of Caution: Rarity Matters

Here’s where things get interesting – and important. This variety carries a Global Conservation Status of S5T3, indicating it has some conservation concerns. If you’re lucky enough to encounter this plant or find seeds from a reputable source, it’s crucial to ensure any planting material is responsibly sourced. We want to appreciate these rare natives without putting wild populations at risk.

Growing Fringed Grass of Parnassus: The Challenge

Here’s where I need to be honest with you: specific growing information for Parnassia fimbriata var. intermedia is quite limited. This isn’t necessarily a bad thing – it just means this plant hasn’t made its way into mainstream horticulture yet. Many of our most treasured native plants started as difficult or unknown species before dedicated gardeners figured out their secrets.

Should You Try Growing It?

If you live within its native range and are passionate about growing rare natives, this could be an exciting challenge. However, given the limited cultivation information available, it’s probably best suited for:

  • Experienced native plant gardeners
  • Those interested in conservation gardening
  • Gardeners willing to experiment and learn through trial
  • Anyone working on habitat restoration projects in its native range

The Bottom Line

Parnassia fimbriata var. intermedia represents the fascinating world of lesser-known native plants. While we don’t have all the answers about growing it successfully, its status as a rare native makes it worthy of conservation attention. If you’re intrigued by this plant, consider connecting with native plant societies in Idaho, Nevada, or Oregon – they might have local knowledge and responsibly sourced materials.

Sometimes the most rewarding gardening adventures come from working with plants that haven’t been figured out yet. Who knows? You might be the gardener who unlocks the secrets to successfully cultivating this charming native forb.

Parnassia fimbriata var. intermedia 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. Parnassia fimbriata var. intermedia is also known as:

Parnassia cirrata Piper var. intermedia Holmgren & | USDA symbol: PACII
Parnassia intermedia | USDA symbol: PAIN9

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: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Rosales
Family: Saxifragaceae Juss. - Saxifrage family
Genus: Parnassia L. - grass of Parnassus

Species: Parnassia fimbriata K.D. Koenig - fringed grass of Parnassus

Variety: Parnassia fimbriata K.D. Koenig var. intermedia (Rydb.) C.L. Hitchc. - fringed grass of Parnassus

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