blueblossom

Ceanothus thyrsiflorus

Member of ceanothus (genus Ceanothus)
buckthorn family (family Rhamnaceae)
dicots (class Magnoliopsida)
flowering plants (subphylum Angiospermae)

There are no other wild members of this species in the bay area.

blue blossom
Ceanothus thyrsiflorus var. thyrsiflorus

blue blossom
Ceanothus thyrsiflorus var. thyrsiflorus

twigs ± glabrous
leaf blade margin no more than partially rolled under
wild on the outer coastal range, including the Monterey Peninsula

carmel ceanothus
Ceanothus thyrsiflorus var. griseus

carmel ceanothus
Ceanothus thyrsiflorus var. griseus

twigs ± puberulent
leaf blade margin rolled under
wild on and near the Monterey Peninsula, but cultivated elsewhere

2 observed taxons / 1 key

Chris’s observations: 34 (26 are research grade)

Locations:

Sweeney Ridge National Recreation Area: 6
Big Basin SP: 4
El Corte de Madera OSP: 3
Purisima Creek Redwoods OSP: 3
Nisene Marks SP: 2
San Bruno Mountain State & County Park: 2
San Pedro Valley CP: 2
UCSC Campus Natural Reserve: 2
Andrew Molera SP
Butano SP
Garrapata SP
Jacks Peak CP
McNee Ranch / Montara Mountain SP
Mt. Madonna SP
Point Lobos SP
Portola Redwoods SP
Stevens Creek Trail
Waterdog Lake & Open Space

Months:

Mar.: 3
Apr.: 3
May: 10
Jun.: 5
Jul.: 9
Aug.: 2
Sep.: 1
Oct.: 1

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Taxon info: iNaturalist – Calflora – CalPhotos – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora