North America Native Plant

Fineleaf Hymenopappus

Botanical name: Hymenopappus filifolius var. parvulus

USDA symbol: HYFIP2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Fineleaf Hymenopappus: A Rare Colorado Native Worth Protecting Meet fineleaf hymenopappus (Hymenopappus filifolius var. parvulus), a lesser-known wildflower that calls Colorado home. This delicate perennial is one of those plants that flies under the radar—not because it lacks charm, but because it’s genuinely uncommon in the wild. If you’re a ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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. ⚘

Fineleaf Hymenopappus: A Rare Colorado Native Worth Protecting

Meet fineleaf hymenopappus (Hymenopappus filifolius var. parvulus), a lesser-known wildflower that calls Colorado home. This delicate perennial is one of those plants that flies under the radar—not because it lacks charm, but because it’s genuinely uncommon in the wild. If you’re a native plant enthusiast who loves discovering botanical treasures, this Colorado endemic might just capture your heart.

What Makes Fineleaf Hymenopappus Special?

This charming native belongs to the sunflower family and grows as what botanists call a forb—essentially a soft-stemmed perennial herb without woody tissue. Think of it as nature’s version of a wildflower that comes back year after year, unlike its annual cousins that need to reseed themselves.

As a true Colorado native, fineleaf hymenopappus has evolved specifically for the unique conditions found in the Centennial State. This means it’s perfectly adapted to local soils, climate patterns, and seasonal rhythms that make Colorado’s environment so distinctive.

Where Does It Grow?

Currently, fineleaf hymenopappus is documented only in Colorado, making it a regional specialty. This limited geographic distribution is part of what makes the plant so intriguing—and so important to protect.

A Word of Caution: Rarity Status

Here’s where things get a bit serious. Fineleaf hymenopappus carries a conservation status of S5T3?, which essentially means botanists aren’t entirely sure about its population stability. The question mark in that rating tells us that more research is needed to understand exactly how rare this variety might be.

What does this mean for gardeners? If you’re considering adding this plant to your landscape, it’s crucial to source it responsibly. Never collect plants from wild populations, and only purchase from reputable native plant nurseries that grow their stock from ethically collected seeds or propagated material.

Should You Grow Fineleaf Hymenopappus?

The answer depends on your gardening goals and access to responsibly sourced plants. Here are some factors to consider:

  • Conservation value: Growing rare native plants in cultivation can help preserve genetic diversity and reduce pressure on wild populations
  • Local adaptation: As a Colorado native, it should thrive in local conditions once established
  • Availability: Limited commercial availability means you might need to work with specialized native plant growers
  • Responsibility: Only pursue this plant if you can source it ethically

Growing Conditions and Care

While specific growing information for this variety is limited, we can make educated assumptions based on its Colorado origins and perennial herb nature:

  • Likely prefers well-draining soils typical of Colorado’s diverse habitats
  • As a native perennial, it should be adapted to local precipitation patterns and temperature extremes
  • Probably benefits from the sunny conditions common in much of Colorado
  • May require a period of winter cold for proper flowering (vernalization)

The Bottom Line

Fineleaf hymenopappus represents the fascinating world of regional plant specialties—those botanical gems that make each area unique. While its rarity status means we should approach cultivation thoughtfully, supporting conservation through responsible gardening can be incredibly rewarding.

If you’re drawn to this Colorado native, start by connecting with local native plant societies, botanical gardens, or specialized growers who might have access to ethically sourced material. Sometimes the rarest plants make the most meaningful additions to our gardens—not just for their beauty, but for the conservation story they represent.

Remember, every rare native plant in cultivation is a small victory for biodiversity and a connection to the unique natural heritage of Colorado.

Fineleaf Hymenopappus

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Hymenopappus L'Hér. - hymenopappus

Species

Hymenopappus filifolius Hook. - fineleaf hymenopappus

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