North America Native Plant

Serpentine Bird’s Beak

Botanical name: Cordylanthus tenuis brunneus

USDA symbol: COTEB

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Cordylanthus brunneus (Jeps.) Pennell (COBR2)   

Serpentine Bird’s Beak: A Rare California Native Worth Protecting Meet the serpentine bird’s beak (Cordylanthus tenuis brunneus), a fascinating little wildflower that’s as specialized as its quirky name suggests. This annual forb is one of California’s botanical treasures, perfectly adapted to some of the state’s most challenging growing conditions. While ...

Rare plant alert!

Region: Conservation status by state

Status: S4S5T3: Status is uncertain but is somewhere between the following rankings: 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. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 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. ⚘

Serpentine Bird’s Beak: A Rare California Native Worth Protecting

Meet the serpentine bird’s beak (Cordylanthus tenuis brunneus), a fascinating little wildflower that’s as specialized as its quirky name suggests. This annual forb is one of California’s botanical treasures, perfectly adapted to some of the state’s most challenging growing conditions. While you might not find it at your local nursery, understanding this plant helps us appreciate the incredible diversity of California’s native flora.

What Makes This Plant Special

The serpentine bird’s beak belongs to a group of plants that are true California originals. As an annual forb, it completes its entire life cycle in just one growing season, sprouting, blooming, setting seed, and dying back before winter arrives. This might seem like a short life, but it’s perfectly suited to California’s Mediterranean climate with its wet winters and dry summers.

You might also see this plant referred to by its synonym, Cordylanthus brunneus, in older botanical references. The scientific community occasionally updates plant names as our understanding of plant relationships evolves, so don’t be surprised if you encounter both names in your research.

Where You’ll Find It Growing Wild

This rare subspecies calls California home, where it has carved out a very specific niche in the state’s diverse ecosystems. The serpentine bird’s beak has earned a conservation status of S4S5T3, which signals that botanists are keeping a close eye on its populations.

Should You Grow Serpentine Bird’s Beak?

Here’s where things get a bit tricky for the home gardener. While this native California plant would theoretically make a wonderful addition to a native garden, its rarity status means we need to be extra thoughtful about cultivation. If you’re interested in growing serpentine bird’s beak, it’s crucial to source seeds or plants only from reputable native plant societies or nurseries that can guarantee ethical, legally collected material.

The Challenge of Growing Rare Natives

Unfortunately, specific cultivation information for this subspecies is limited, which reflects both its rarity and its specialized growing requirements. Like many plants with serpentine in their common name, it likely thrives in the unique conditions found in serpentine soils – those mineral-rich, often challenging soils that many plants can’t tolerate but that some California natives absolutely love.

If you’re passionate about supporting California’s native plant diversity, consider these approaches:

  • Connect with local native plant societies who may have experience with rare species
  • Participate in habitat restoration projects where this plant naturally occurs
  • Support conservation organizations working to protect California’s serpentine ecosystems
  • Consider growing more common relatives that don’t have conservation concerns

The Bigger Picture

While you might not be planting serpentine bird’s beak in your backyard anytime soon, learning about plants like this one helps us understand why protecting California’s diverse habitats matters so much. Each specialized species like this represents millions of years of evolution, perfectly fine-tuned to its environment.

Instead of trying to grow this rare beauty, consider exploring other California natives that offer similar benefits to wildlife and ecosystems but don’t carry conservation concerns. Your local native plant society can point you toward plenty of gorgeous, garden-worthy alternatives that will give you that authentic California native garden experience while supporting local ecosystems.

Sometimes the best way to appreciate a rare plant is to admire it in its natural habitat and work to ensure that habitat remains protected for future generations to enjoy.

Serpentine Bird’s Beak

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

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Cordylanthus Nutt. ex Benth. - bird's-beak

Species

Cordylanthus tenuis A. Gray - slender bird's beak

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