Native Plants

Purpus’ Sullivantia

Sullivantia hapemanii var. purpusii

USDA symbol: SUHAP

perennial forb

Lower 48 states: native

Meet Purpus’ sullivantia (Sullivantia hapemanii var. purpusii), one of Colorado’s most special and elusive native plants. This little-known perennial forb is like finding a hidden treasure in the world of native gardening – beautiful, unique, but requiring our careful stewardship. Purpus’ sullivantia belongs to the Saxifrage family and represents a ...

Purpus’ Sullivantia may be listed as rare in your area.
Global Conservation Status

Status: S3T3 | Subspecies or variety is vulnerable: Found only in a restricted range, even if abundant at some locations. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals.

Purpus’ Sullivantia: A Rare Colorado Gem Worth Protecting

Meet Purpus’ sullivantia (Sullivantia hapemanii var. purpusii), one of Colorado’s most special and elusive native plants. This little-known perennial forb is like finding a hidden treasure in the world of native gardening – beautiful, unique, but requiring our careful stewardship.

What Makes This Plant Special?

Purpus’ sullivantia belongs to the Saxifrage family and represents a fascinating piece of Colorado’s botanical heritage. As a herbaceous perennial forb, it lacks woody stems but returns year after year, making it a true survivor in its specialized habitat. You might also see it listed under its synonym, Sullivantia purpusii, in older botanical references.

Where Does It Call Home?

This remarkable plant is endemic to Colorado, meaning it exists nowhere else on Earth naturally. Its extremely limited distribution makes it a true Colorado exclusive – think of it as the botanical equivalent of a local celebrity that never left town.

  • Species observed
  • No observations

The Conservation Reality Check

Here’s where we need to have an important conversation. Purpus’ sullivantia carries a Global Conservation Status of S3T3, which indicates it’s considered rare and potentially vulnerable. This isn’t just botanical jargon – it means this plant needs our protection more than our cultivation.

What this means for gardeners:

  • Wild collection is absolutely off-limits
  • Any cultivation should only use responsibly sourced, legally obtained material
  • Consider supporting conservation efforts instead of trying to grow it
  • Appreciate it in its natural habitat through responsible observation

Growing Considerations (If You Must)

Given its rarity, we have limited information about cultivation requirements. However, based on its Colorado origins and membership in the Saxifrage family, Purpus’ sullivantia likely prefers:

  • Well-draining, rocky soils
  • Conditions similar to its native Colorado habitat
  • USDA hardiness zones 4-7 (estimated)
  • Specialized care that mimics alpine or rocky mountain conditions

A Better Approach: Conservation-Minded Alternatives

Instead of trying to grow this rare beauty, consider these approaches:

  • Support Colorado native plant societies and conservation organizations
  • Choose other Colorado native Saxifrage family members that are more common
  • Create habitat for common native species that support the same ecosystems
  • Participate in citizen science projects that help monitor rare plant populations

The Bottom Line

Purpus’ sullivantia represents the kind of botanical treasure that makes Colorado’s flora so special. While it might be tempting to add such a unique plant to your garden, the responsible approach is to admire it from afar and support its conservation in the wild. Sometimes the best way to love a plant is to let it thrive where it belongs – in its irreplaceable native habitat.

Remember, every rare plant tells a story of millions of years of evolution. By protecting Purpus’ sullivantia in its natural home, we’re preserving not just a species, but an entire chapter of Colorado’s natural history for future generations to discover and cherish.

Sullivantia hapemanii var. purpusii 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. Sullivantia hapemanii var. purpusii is also known as:

Sullivantia purpusii | USDA symbol: SUPU

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: Sullivantia Torr. & A. Gray ex A. Gray - coolwort

Species: Sullivantia hapemanii (J.M. Coult. & Fisher) J.M. Coult. - Hapeman's coolwort

Variety: Sullivantia hapemanii (J.M. Coult. & Fisher) J.M. Coult. var. purpusii (Brand) Soltis - Purpus' sullivantia

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