Native Plants

Butterwick’s Starviolet

Stenaria butterwickiae

USDA symbol: STBU4

perennial forb

Lower 48 states: native

Meet Butterwick’s starviolet (Stenaria butterwickiae), one of Texas’s most elusive botanical treasures. This tiny perennial forb might not be making headlines in gardening magazines, but it’s making waves in conservation circles for all the right reasons – and that’s exactly why you probably shouldn’t try to grow it in your ...

Butterwick’s Starviolet may be listed as rare in your area.
Global Conservation Status

Status: S1 | Critically imperiled: Typically 5 or fewer occurrences or under 1,000 remaining individuals.

Butterwick’s Starviolet: A Rare Texas Treasure That’s Better Left Wild

Meet Butterwick’s starviolet (Stenaria butterwickiae), one of Texas’s most elusive botanical treasures. This tiny perennial forb might not be making headlines in gardening magazines, but it’s making waves in conservation circles for all the right reasons – and that’s exactly why you probably shouldn’t try to grow it in your backyard.

What Makes Butterwick’s Starviolet Special

Butterwick’s starviolet is a native Texas perennial that belongs to the madder family (Rubiaceae). You might also see it referenced by its scientific synonyms Hedyotis butterwickiae or Houstonia butterwickiae in older botanical literature. As a forb, it’s an herbaceous plant without significant woody tissue – think of it as nature’s way of creating a small, delicate wildflower that comes back year after year.

Where Does It Call Home?

This rare beauty is found exclusively in Texas, making it a true Lone Star State endemic. Its distribution is extremely limited within the state, which is part of what makes it so special – and so vulnerable.

  • Species observed
  • No observations

The Rarity Factor: Why This Plant is Off-Limits

Here’s where things get serious. Butterwick’s starviolet has a Global Conservation Status of S1, which translates to Critically Imperiled. This means there are typically only five or fewer known populations, with very few remaining individuals (fewer than 1,000 total plants). In plant conservation terms, this is about as rare as it gets without being extinct.

What does this mean for gardeners? Simply put: this plant should not be collected from the wild or cultivated in home gardens unless you’re working with a legitimate conservation organization using responsibly sourced, propagated material.

Why You Should Admire From Afar

While we’d love to give you growing tips and care instructions, the reality is that Butterwick’s starviolet is far too rare and vulnerable for casual gardening. Here’s why it’s better to appreciate this plant as a wild treasure:

  • Extremely limited wild populations need protection
  • Unknown growing requirements make successful cultivation unlikely
  • Removing plants from wild populations could contribute to extinction
  • No commercially available seeds or plants exist

Supporting Conservation Instead

If Butterwick’s starviolet has captured your heart (and we don’t blame you – rare plants have a special appeal), consider supporting botanical conservation efforts in Texas instead of trying to grow it yourself. Many botanical gardens and universities are working to study and protect rare species like this one.

Native Alternatives for Your Texas Garden

While you can’t grow Butterwick’s starviolet, Texas has plenty of other beautiful native forbs that you can cultivate responsibly. Consider these alternatives that offer similar small-scale wildflower charm:

  • Bluets (Houstonia pusilla) – a close relative with tiny blue flowers
  • Texas bluebonnet (Lupinus texensis) – the state flower
  • Prairie phlox (Phlox pilosa) – delicate pink to purple blooms
  • Lanceleaf coreopsis (Coreopsis lanceolata) – cheerful yellow flowers

The Bottom Line

Butterwick’s starviolet represents something precious in our natural world – a plant so rare that its very existence is a gift. While we can’t invite it into our gardens, we can celebrate its uniqueness and support efforts to protect it in the wild. Sometimes the best way to love a plant is to leave it exactly where nature intended it to be.

Instead of trying to grow this rare beauty, focus your Texas native plant gardening efforts on more common species that can thrive in cultivation while still supporting local ecosystems. Your garden can be a conservation success story in its own right, just with different stars of the show.

Stenaria butterwickiae 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. Stenaria butterwickiae is also known as:

Hedyotis butterwickiae | USDA symbol: HEBU2
Houstonia butterwickiae | USDA symbol: HOBU2

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: Asteridae
Order: Rubiales
Family: Rubiaceae Juss. - Madder family
Genus: Stenaria Raf. ex Steud. - diamond-flowers

Species: Stenaria butterwickiae (Terrell) Terrell - Butterwick's starviolet

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