

Great Basin Springbeauty Claytonia umbellata
Great Basin Springbeauty is a perennial wildflower native to the lower 48 states. It blooms Apr – Jul. A host for pollen-specialist native bees.
More about this plant
Claytonia umbellata is a species of wildflower in the purslane family known by the common name Great Basin springbeauty. It is native to the Great Basin of the United States, where it grows mainly in subalpine coniferous forests, often on north-facing exposed slopes in the talus. It is a perennial herb growing from a tuberous root up to 5 centimeters wide and a thin taproot. Most of the stem develops underground, as do the petioles of the most basal leaves. Above the ground appear a few oval-shaped fleshy red to green leaves and an inflorescence of up to 12 flowers. Each flower has five magenta to deeply pink-tinted white petals. Wikipedia →
Growing & care
USDA PLANTS · TRY- Hardiness
- ≥ zone 6 derived from its U.S. range
- Lifespan
- Perennial
Wildlife & pollinators
How pollinator value is scored →❧ Caterpillar hosts Documented caterpillar host
Recorded feeding on Claytonia in North America, including:
✦ Bees specialist-bee host
Specialist native bees depend on it.
Some native bees are pollen specialists (oligolectic) — they raise young only on pollen from particular plant genera. Claytonia is a recorded specialist-bee host, so losing it can mean losing the bee that relies on it.
How we know this (1) Methods & honest limits
We take the plant’s U.S. county range and look up each county’s long-term climate, then summarise: native rainfall = the median annual rainfall across its counties; heat tolerance = the warm end (90th percentile) of average temperature across its range (mirroring how our cold-hardiness floor uses an extreme). Counties + medians blunt the roadside/observer bias that makes point-level climate unreliable. Needs at least five placeable counties.
Honest limits: A realized, sampling-biased niche (where it has been recorded, not its physiological optimum), and county climate is coarse — large Western counties span deserts and mountains. Derived guide, never a measured fact.
Sources for this entry (13) Open & cited
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