North America Native Plant

Kaibab Bird’s Beak

Botanical name: Cordylanthus wrightii kaibabensis

USDA symbol: COWRK

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Kaibab Bird’s Beak: A Rare Arizona Native Worth Protecting If you’re passionate about native plants and conservation, you might be intrigued by Kaibab bird’s beak (Cordylanthus wrightii kaibabensis), one of Arizona’s lesser-known botanical treasures. This annual forb represents a fascinating example of plant specialization and rarity in the American Southwest. ...

Rare plant alert!

Region: Conservation status by state

Status: S4S5T1T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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. ⚘

Kaibab Bird’s Beak: A Rare Arizona Native Worth Protecting

If you’re passionate about native plants and conservation, you might be intrigued by Kaibab bird’s beak (Cordylanthus wrightii kaibabensis), one of Arizona’s lesser-known botanical treasures. This annual forb represents a fascinating example of plant specialization and rarity in the American Southwest.

What Makes Kaibab Bird’s Beak Special?

Kaibab bird’s beak is a native annual forb that belongs to the lower 48 States’ flora. As a forb, it’s an herbaceous plant without woody tissue above ground, relying on seeds to survive from year to year. What makes this plant particularly noteworthy is its conservation status and limited distribution.

Where Does It Grow?

This rare subspecies is found exclusively in Arizona, making it a true regional endemic. Its limited geographic range contributes to its special conservation significance and makes it a plant that serious native gardeners should know about, even if they can’t easily grow it.

Should You Plant Kaibab Bird’s Beak?

The short answer: Probably not, unless you’re involved in conservation efforts. Here’s why:

  • Rarity concerns: With a conservation status of S4S5T1T3, this plant is considered rare and requires careful protection
  • Limited availability: You won’t find this plant at your local nursery
  • Specialized habitat needs: As a rare endemic, it likely has very specific growing requirements
  • Conservation responsibility: Any planting should only be done with responsibly sourced, legally obtained material

Conservation Value

If you’re a conservation-minded gardener, understanding plants like Kaibab bird’s beak helps you appreciate Arizona’s unique botanical heritage. While you might not grow this specific subspecies, you can support similar native annual forbs that provide comparable ecological benefits without conservation concerns.

Alternative Native Options

Instead of seeking out this rare subspecies, consider these approaches:

  • Support conservation organizations working to protect rare Arizona natives
  • Plant other native Arizona annuals that support local ecosystems
  • Learn about and appreciate rare plants in their natural habitats
  • Participate in citizen science projects that monitor rare plant populations

The Bigger Picture

Kaibab bird’s beak serves as a reminder that not every native plant is suitable for home cultivation. Some species are best appreciated and protected in their natural settings. By understanding and respecting these rare plants, we become better stewards of our native flora and more thoughtful gardeners overall.

If you encounter this plant in the wild during your Arizona adventures, take a moment to appreciate its rarity and the specialized ecosystem it calls home. Sometimes the best way to grow a rare plant is to ensure it continues thriving where nature intended.

Kaibab 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 wrightii A. Gray - Wright's 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