Eriogonum callistum
Tehachapi buckwheat
(c) John Game, some rights reserved (CC BY) · licence
Family: Polygonaceae · Type: Perennial · Native
Conservation status: CNPS 1B.1
Eriogonum callistum (Tehachapi buckwheat) is a native California perennial in the Polygonaceae family, recognized by large mounded mat form, limestone substrate, gray-white tomentose leaves, Tehachapi restriction.
Tehachapi buckwheat is a rare (CNPS 1B.1) California native perennial found in the Tehachapi region on open limestone outcrops and ridges in chaparral at elevations of 1,400 to 1,500 meters. Flowering from spring to summer, this plant produces delicate pink-white to white flowers in compact clusters with dense white tomentose surfaces. Growing as a mounded mat 0.5 to 3.5 decimeters tall and spreading 3 to 10 decimeters wide, it features densely white-tomentose stems that create a silvery appearance. Its basal leaves are elliptic, 2 to 5 centimeters long and 0.8 to 2 centimeters wide, covered in a distinctive gray-white tomentose texture that gives the plant a soft, woolly appearance. The fruit is smooth and 3 to 4 millimeters long, completing this distinctive limestone-dwelling buckwheat's life cycle.
Identification and appearance
Key characters: Co-occurs with 39 species; distinguished by large mounded mat form, limestone substrate, gray-white tomentose leaves, Tehachapi restriction
Habitat and range
Habitat: Open limestone outcrops, ridges in chaparral
Elevation: 1400-1500 m
California counties: Kern
Bloom period
Eriogonum callistum blooms Spring-summer.
Conservation status
CNPS 1B.1
How to tell it apart
vs Adenostoma: Eriogonum has flowers in cup-like involucres; Adenostoma has tiny white rose-family flowers in spikes.; vs Salvia: Eriogonum has six similar perianth parts; Salvia has two-lipped tubular flowers.; vs Fagopyrum: Eriogonum has flowers in involucred clusters; Fagopyrum has loose branching sprays without involucres.; vs Artemisia: Eriogonum has cup-surrounded flower clusters; Artemisia has tiny inconspicuous heads in drooping sprays.; vs Chorizanthe: Eriogonum has multiple flowers per involucre; Chorizanthe has one flower per involucre with spiny teeth.
Frequently asked questions
Is Eriogonum callistum native to California?
Yes. Eriogonum callistum is native to California (recorded as native).
When does Eriogonum callistum bloom?
Eriogonum callistum blooms Spring-summer.
Where in California does Eriogonum callistum grow?
Eriogonum callistum occurs in Kern, at elevations of 1400-1500 m.
What plant family does Eriogonum callistum belong to?
Eriogonum callistum is in the Polygonaceae family, genus Eriogonum.
Is Eriogonum callistum rare or endangered?
Eriogonum callistum carries California Rare Plant Rank 1B.1, state rank S1.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CNPS Rare Plant Inventory · Index of California Plant Names · CalPhotos · CDFW CNDDB
Last updated 2026-09-30
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.