cherry-plum

Prunus cerasifera

Member of old world plums (section Prunus)
plums, cherries, and allies (genus Prunus)
rose family (family Rosaceae)
dicots (class Magnoliopsida)
white in flowering plants

1 flower per inflorescence (rarely 2)
ovary, fruit glabrous
flowers appear before leaves (although there can be some overlap)
leaf crenate-serrate
common

Toxicity:
in general for flowering plum, ornamental flowering plum, purple leaf plum (Prunus cerasifera 'atropurpurea'):

4 – Ingestion of these plants, especially in large amounts, is expected to cause serious effects to the heart, liver, kidneys or brain. If ingested in any amount, call the poison center immediately.

chewed seeds of ornamental cherry, ornamental plum (Prunus spp.):

Chris’s observations: 9 (2 are research grade)

Locations:

Edgewood Park & Natural Preserve: 3
Sweeney Ridge National Recreation Area: 2
Coyote Creek Trail
Dry Creek Pioneer RP
San Pedro Valley CP
Windy Hill OSP

Months:

Feb.: 3
Mar.: 3
Apr.: 1
May: 0
Jun.: 1
Jul.: 1

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

Bay Area species: iNaturalist – Calflora