North America Native Plant

Clokey’s Cryptantha

Botanical name: Cryptantha clokeyi

USDA symbol: CRCL2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Cryptantha muricata (Hook. & Arn.) A. Nelson & J.F. Macbr. var. clokeyi (I.M. Johnst.) Jeps. (CRMUC)   

Clokey’s Cryptantha: A Rare Desert Gem Worth Protecting If you’re passionate about native plants and conservation, Clokey’s cryptantha (Cryptantha clokeyi) might just capture your heart—but it comes with some serious responsibility attached. This diminutive desert annual is one of California’s botanical treasures, though you won’t find it growing just anywhere. ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Clokey’s Cryptantha: A Rare Desert Gem Worth Protecting

If you’re passionate about native plants and conservation, Clokey’s cryptantha (Cryptantha clokeyi) might just capture your heart—but it comes with some serious responsibility attached. This diminutive desert annual is one of California’s botanical treasures, though you won’t find it growing just anywhere.

What Makes Clokey’s Cryptantha Special?

Clokey’s cryptantha is a small annual forb that belongs to the borage family. Don’t let its modest appearance fool you—this little wildflower is perfectly adapted to some of California’s harshest desert environments. Like other members of the Cryptantha genus, it produces tiny white flowers arranged in distinctive coiled clusters that slowly unfurl as the plant blooms.

As an annual, this plant completes its entire life cycle in a single growing season, germinating with winter rains, blooming in spring, setting seed, and dying back as the desert heat intensifies.

Where Does It Call Home?

Clokey’s cryptantha is endemic to California, meaning it grows nowhere else in the world naturally. This limited geographic distribution is part of what makes it so special—and so vulnerable.

A Plant That Needs Our Help

Important Conservation Note: Clokey’s cryptantha has a Global Conservation Status of S2, which means it’s considered Imperiled. With typically only 6 to 20 known occurrences and possibly fewer than 3,000 individual plants remaining, this species is at risk of extinction.

If you’re considering growing this plant, please only use seed or plants from reputable native plant nurseries that source their material responsibly. Never collect from wild populations—every plant in the wild is precious for the species’ survival.

Why Grow Clokey’s Cryptantha?

Despite—or perhaps because of—its rarity, there are compelling reasons to include this plant in appropriate gardens:

  • Conservation value: Growing rare natives helps preserve genetic diversity
  • Authentic desert landscaping: Perfect for recreating natural California desert plant communities
  • Pollinator support: The small flowers attract native bees and other specialized desert pollinators
  • Water-wise gardening: Extremely drought-tolerant once established
  • Educational opportunity: A conversation starter about plant conservation

Growing Conditions and Care

Clokey’s cryptantha thrives in conditions that mirror its natural desert habitat:

  • Soil: Well-draining, sandy or gravelly soil is essential
  • Sun exposure: Full sun
  • Water: Minimal—allow natural rainfall to do most of the work
  • Climate: Best suited for USDA hardiness zones 8-10

Planting and Maintenance Tips

Growing Clokey’s cryptantha successfully means working with its natural rhythm:

  • Direct seed in fall before winter rains arrive
  • Scatter seeds on prepared soil surface—don’t bury them deeply
  • Provide minimal supplemental water, if any
  • Allow plants to self-seed for natural population maintenance
  • Avoid fertilizers, which can harm desert-adapted plants

Garden Design Ideas

This petite annual works best in:

  • Desert-themed rock gardens
  • Native plant demonstration areas
  • Xeriscaped front yards
  • Conservation-focused landscapes
  • Areas where you want to showcase California’s botanical heritage

The Bottom Line

Clokey’s cryptantha isn’t your typical garden center find, and that’s precisely what makes it valuable. If you have the right growing conditions and access to responsibly sourced seed, this rare beauty can be a meaningful addition to your native plant collection. Just remember—with great botanical privilege comes great responsibility. By growing this imperiled species, you become part of its conservation story.

Consider pairing it with other California desert natives that are more common, creating a beautiful and biodiverse desert garden that tells the complete story of this unique ecosystem.

Clokey’s Cryptantha

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

Cryptantha Lehm. ex G. Don - cryptantha

Species

Cryptantha clokeyi I.M. Johnst. - Clokey's cryptantha

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