North America Native Plant

Hairless Popcornflower

Botanical name: Plagiobothrys glaber

USDA symbol: PLGL

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Allocarya glaber (A. Gray) J.F. Macbr. (ALGL12)   

Hairless Popcornflower: A Possibly Lost California Native Meet the hairless popcornflower (Plagiobothrys glaber), a small annual wildflower that tells a sobering story about California’s changing landscapes. This tiny member of the borage family represents one of those quiet conservation mysteries – a plant that may have slipped away from us ...

Rare plant alert!

Region: Conservation status by state

Status: SH: Status is uncertain but is somewhere between the following rankings: Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘

Hairless Popcornflower: A Possibly Lost California Native

Meet the hairless popcornflower (Plagiobothrys glaber), a small annual wildflower that tells a sobering story about California’s changing landscapes. This tiny member of the borage family represents one of those quiet conservation mysteries – a plant that may have slipped away from us before we fully understood its place in the ecosystem.

What Makes This Plant Special (And Concerning)

The hairless popcornflower earned its charming common name from its small, white flowers that supposedly resemble tiny kernels of popped corn. As an annual forb, this delicate plant would complete its entire life cycle in just one growing season, sprouting, flowering, setting seed, and dying back each year.

But here’s where the story takes a concerning turn: Plagiobothrys glaber currently holds a Global Conservation Status of SH, meaning it’s Possibly Extirpated. In conservation speak, that means this little wildflower is known only from historical records, and there’s just a slim hope that it might still exist somewhere out there.

Where It Called Home

This California native was historically found only within the Golden State’s borders. As an obligate wetland species, the hairless popcornflower required consistently moist or wet conditions to thrive – the kind of specialized habitat that has become increasingly rare due to development, agriculture, and water diversions throughout California.

Why You Can’t (And Shouldn’t Try to) Grow It

Here’s the straightforward truth: you cannot and should not attempt to grow hairless popcornflower in your garden. Here’s why:

  • Possible extinction: This plant may no longer exist in the wild, making seeds or plants impossible to obtain through legitimate sources
  • Specialized habitat needs: As an obligate wetland species, it requires very specific growing conditions that are difficult to replicate in home gardens
  • Conservation concerns: Any remaining populations (if they exist) need protection, not disruption from collection
  • Legal considerations: Collecting rare native plants from wild populations is often illegal and always unethical

What This Plant Teaches Us

The story of the hairless popcornflower serves as a reminder of how many specialized native plants we may be losing without even realizing it. These small, seemingly insignificant wildflowers often played important roles in their ecosystems – supporting specific pollinators, providing food for wildlife, and contributing to the complex web of wetland ecology.

Better Alternatives for Your Garden

While you can’t grow hairless popcornflower, you can support California’s native plant heritage by choosing other native species that are readily available and not at risk. Consider these wetland-loving California natives instead:

  • Blue-eyed grass (Sisyrinchium bellum) for small, delicate flowers
  • California sedge (Carex barbarae) for wetland texture
  • Creek monkeyflower (Erythranthe guttata) for cheerful yellow blooms
  • Western columbine (Aquilegia formosa) for woodland wetland areas

Supporting Conservation Efforts

The best way to honor plants like the hairless popcornflower is to support habitat conservation and restoration efforts in California. Consider volunteering with local native plant societies, supporting wetland conservation organizations, or simply choosing native plants for your own garden to help preserve the genetic diversity and ecological connections that make California’s flora so special.

Sometimes the most powerful gardening choice is knowing when not to plant something – and instead working to protect the wild spaces where rare species like the hairless popcornflower might still have a fighting chance.

Hairless Popcornflower

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

Lamiales

Family

Boraginaceae Juss. - Borage family

Genus

Plagiobothrys Fisch. & C.A. Mey. - popcornflower

Species

Plagiobothrys glaber (A. Gray) I.M. Johnst. - hairless popcornflower

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