North America Native Plant

Trans-pecos Cyclanthera

Botanical name: Cyclanthera stenura

USDA symbol: CYST10

Life cycle: annual

Habit: vine

Native status: Native to the lower 48 states  

Trans-Pecos Cyclanthera: A Mysterious Texas Native Worth Knowing Meet the Trans-Pecos cyclanthera (Cyclanthera stenura), one of Texas’s lesser-known native treasures. This unassuming annual herb might not be the showstopper of your garden center, but it represents the fascinating diversity of plants that call the Lone Star State home. What Exactly ...

Trans-Pecos Cyclanthera: A Mysterious Texas Native Worth Knowing

Meet the Trans-Pecos cyclanthera (Cyclanthera stenura), one of Texas’s lesser-known native treasures. This unassuming annual herb might not be the showstopper of your garden center, but it represents the fascinating diversity of plants that call the Lone Star State home.

What Exactly Is Trans-Pecos Cyclanthera?

Trans-Pecos cyclanthera is an annual forb—basically a non-woody plant that completes its entire life cycle in one growing season. As a native Texas species, it belongs to that special group of plants that evolved right here in our landscapes, perfectly adapted to local conditions that would challenge many garden center regulars.

Don’t expect towering heights from this humble herb. Like most forbs, it lacks significant woody tissue and keeps its growing points at or near ground level, making it a true ground-hugger in the plant world.

Where You’ll Find It Growing Wild

This cyclanthera calls Texas home, specifically thriving in the state’s diverse ecosystems. As its common name suggests, it’s associated with the Trans-Pecos region, that ruggedly beautiful area of far West Texas where desert meets mountain.

Should You Plant Trans-Pecos Cyclanthera?

Here’s where things get interesting—and a bit challenging. While this native plant certainly deserves respect as part of Texas’s natural heritage, finding cultivation information is like searching for a needle in a haystack. The gardening world simply hasn’t caught up with documenting how to grow many of our lesser-known natives.

The Reality of Growing Rare Natives

If you’re drawn to the idea of growing Trans-Pecos cyclanthera, you’d be pioneering uncharted territory. Here’s what we do know:

  • It’s an annual, so you’d need to replant or allow it to self-seed each year
  • As a Texas native, it’s likely adapted to challenging conditions including heat and drought
  • Being a forb, it probably prefers well-draining soil
  • Its natural habitat suggests it can handle the intense sun and temperature swings common in West Texas

Better-Known Texas Native Alternatives

While Trans-Pecos cyclanthera remains something of an enigma, Texas offers plenty of well-documented native alternatives that provide similar ecological benefits:

  • Bluebonnet (Lupinus texensis) – the state flower and a reliable annual
  • Indian paintbrush (Castilleja) – vibrant wildflowers that thrive in Texas conditions
  • Purple prairie clover (Dalea purpurea) – excellent for pollinators and drought tolerance
  • Maximilian sunflower (Helianthus maximiliani) – a tall, late-blooming native perennial

The Value of Plant Mysteries

While we may not have a complete growing guide for Trans-Pecos cyclanthera, its existence reminds us that our native plant communities are incredibly diverse and still hold secrets. Every lesser-known native represents an opportunity for citizen scientists and curious gardeners to contribute to our understanding of Texas flora.

If you’re passionate about supporting truly local ecosystems, consider participating in native plant surveys, supporting botanical research, or simply appreciating these plants in their wild settings. Sometimes the best way to honor a native plant is to protect its natural habitat rather than trying to domesticate it.

The Bottom Line

Trans-Pecos cyclanthera might not be ready for your weekend garden project, but it represents the wild, wonderful diversity that makes Texas flora so special. While we wait for more cultivation information to emerge, there are plenty of other Texas natives ready to bring authentic local beauty to your landscape.

Who knows? Maybe someday you’ll be the gardener who figures out how to successfully grow this mysterious little herb and shares that knowledge with the rest of us plant lovers.

Trans-pecos Cyclanthera

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Violales

Family

Cucurbitaceae Juss. - Cucumber family

Genus

Cyclanthera Schrad. - cyclanthera

Species

Cyclanthera stenura G.L. Nesom - Trans-Pecos cyclanthera

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