Native Plants

Trelease’s Beavertail Pricklypear

Opuntia basilaris var. treleasei

USDA symbol: OPBAT

perennial shrub

Lower 48 states: native

Meet Trelease’s beavertail pricklypear (Opuntia basilaris var. treleasei), one of California’s most precious and endangered cacti. This remarkable desert dweller isn’t your typical backyard plant – it’s a rare variety that deserves our respect and protection rather than casual cultivation. Trelease’s beavertail pricklypear is a perennial shrub that belongs to ...

Trelease’s Beavertail Pricklypear may be listed as rare in your area.
Global Conservation Status

Status: S5T1 | Secure: At low or no risk of extinction in the area due to an extensive range, abundant populations, and with little to no concern of declines or threats.

United States

Status: Endangered | Endangered. In danger of extinction throughout all or a significant portion of its range.

Trelease’s Beavertail Pricklypear: A Rare Desert Jewel Worth Protecting

Meet Trelease’s beavertail pricklypear (Opuntia basilaris var. treleasei), one of California’s most precious and endangered cacti. This remarkable desert dweller isn’t your typical backyard plant – it’s a rare variety that deserves our respect and protection rather than casual cultivation.

What Makes This Cactus Special?

Trelease’s beavertail pricklypear is a perennial shrub that belongs to the iconic pricklypear family. Like other beavertail cacti, it likely features the characteristic flat, paddle-shaped segments that give this group its memorable common name. As a native California species, it has evolved specifically to thrive in the unique conditions of its limited range.

Where Does It Call Home?

This special variety is found exclusively in California, making it a true Golden State endemic. Its distribution is extremely limited, which contributes to its endangered status, particularly in the Bakersfield area where it faces significant conservation challenges.

  • Species observed
  • No observations

A Conservation Priority

Important Conservation Alert: Trelease’s beavertail pricklypear is listed as Endangered in the United States, specifically in the Bakersfield region. This means the plant is at serious risk of extinction in the wild.

If you’re interested in growing this species, here are the responsible approaches:

  • Only obtain plants from verified conservation nurseries or botanical institutions
  • Ensure any specimens are propagated from legally and ethically sourced material
  • Consider supporting conservation efforts instead of personal cultivation
  • Participate in habitat restoration projects in its native range

Better Alternatives for Your Garden

While Trelease’s beavertail pricklypear should be left to conservation professionals, you can still enjoy the beauty of native California cacti in your landscape. Consider these more widely available alternatives:

  • Common beavertail pricklypear (Opuntia basilaris) – the parent species
  • Other native Opuntia species appropriate for your specific region
  • Locally native desert plants that provide similar aesthetic appeal

Supporting Conservation Efforts

The best way to help Trelease’s beavertail pricklypear is to support conservation organizations working to protect California’s native plant communities. Consider donating to botanical gardens, participating in citizen science projects, or volunteering with local native plant societies.

Every rare plant tells a story of unique evolution and ecological relationships. By protecting species like Trelease’s beavertail pricklypear, we preserve irreplaceable pieces of California’s natural heritage for future generations to study and appreciate.

The Bottom Line

While we can’t recommend adding this endangered beauty to your home landscape, we can all play a role in ensuring its survival in the wild. Sometimes the greatest act of gardening love is knowing when to admire from afar and support conservation efforts instead.

Opuntia basilaris var. treleasei 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. Opuntia basilaris var. treleasei is also known as:

Opuntia treleasei | USDA symbol: OPTR3

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: Caryophyllidae
Order: Caryophyllales
Family: Cactaceae Juss. - Cactus family
Genus: Opuntia Mill. - pricklypear

Species: Opuntia basilaris Engelm. & J.M. Bigelow - beavertail pricklypear

Variety: Opuntia basilaris Engelm. & J.M. Bigelow var. treleasei (J.M. Coult.) J.M. Coult. ex Toumey - Trelease's beavertail pricklypear

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