Ceanothus impressus var. nipomensis
Nipomo mesa ceanothus
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Family: Rhamnaceae · Type: Shrub / Tree · Native
Conservation status: CNPS 1B.2
Ceanothus impressus var. nipomensis (Nipomo mesa ceanothus) is a native California shrub / tree in the Rhamnaceae family, recognized by larger flat leaves and more open erect growth form.
Nipomo mesa ceanothus is a rare (CNPS 1B.2) California native shrub found in southern Central Coast regions including Nipomo Mesa and Irish Hills on sandy substrates, flats, and canyons at elevations below 200 meters. Flowering from February to April, this plant produces small blue to white flowers in compact clusters. Growing erect with an open structure reaching 1 to 3 meters tall, the shrub develops sturdy woody branches. Its leaves are distinctive, with flat blades 11 to 25 millimeters long and 7 to 20 millimeters wide, providing a dense, textured appearance. The shrub thrives in coastal sandy environments, creating distinctive patches of vegetation in its limited range.
Identification and appearance
Key characters: 21 sympatric species; distinguished by larger flat leaves and more open erect growth form
Habitat and range
Habitat: Sandy substrates, flats, canyons
Elevation: < 200 m
California counties: San Luis Obispo, Santa Barbara
Bloom period
Ceanothus impressus var. nipomensis blooms Feb-Apr.
Conservation status
CNPS 1B.2
How to tell it apart
vs Rhamnus: Ceanothus has showy blue/white/pink flowers in dense clusters; Rhamnus has tiny inconspicuous greenish flowers.; vs Quercus: Ceanothus has showy flower clusters and small leaves; Quercus has acorns and distinctive lobed or toothed oak leaves.; vs Baccharis: Ceanothus has individual flowers with 5 separate petals; Baccharis has composite flower heads with tiny disc flowers.; vs Cercocarpus: Ceanothus has blue/white/pink flowers in clusters; Cercocarpus has tiny flowers with no petals and feathery fruiting tails.; vs Adenostoma: Ceanothus flowers have 5 distinct colored petals; Adenostoma has tiny white flowers and needle-like clustered leaves.
Frequently asked questions
Is Ceanothus impressus var. nipomensis native to California?
Yes. Ceanothus impressus var. nipomensis is native to California (recorded as native).
When does Ceanothus impressus var. nipomensis bloom?
Ceanothus impressus var. nipomensis blooms Feb-Apr.
Where in California does Ceanothus impressus var. nipomensis grow?
Ceanothus impressus var. nipomensis occurs in San Luis Obispo, Santa Barbara, at elevations of < 200 m.
What plant family does Ceanothus impressus var. nipomensis belong to?
Ceanothus impressus var. nipomensis is in the Rhamnaceae family, genus Ceanothus.
Is Ceanothus impressus var. nipomensis rare or endangered?
Ceanothus impressus var. nipomensis carries California Rare Plant Rank 1B.2, state rank S2.
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 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.