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.

blueblossom
Ceanothus thyrsiflorus var. thyrsiflorus

blueblossom
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: 43 (37 are research grade)

Locations:

Big Basin SP: 7
Sweeney Ridge National Recreation Area: 6
San Pedro Valley CP: 4
El Corte de Madera OSP: 3
Purisima Creek Redwoods OSP: 3
Butano SP: 2
Nisene Marks SP: 2
Point Lobos SP: 2
San Bruno Mountain State & County Park: 2
UCSC Campus Natural Reserve: 2
Andrew Molera SP
Garrapata SP
Henry Cowell Redwoods SP
Jacks Peak CP
McNee Ranch / Montara Mountain SP
Mt. Madonna SP
Portola Redwoods SP
Presidio of San Francisco
Stevens Creek Trail
Waterdog Lake & Open Space

Months:

Jan.: 1
Feb.: 0
Mar.: 3
Apr.: 3
May: 11
Jun.: 5
Jul.: 11
Aug.: 6
Sep.: 2
Oct.: 1

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

Bay Area species: iNaturalist – Calflora