genus Cytisus

(brooms)

Member of brooms
legume family (family Fabaceae)
dicots (class Magnoliopsida)
flowering plants (subphylum Angiospermae)

Except for historical records that I'm ignoring, there are no other wild species of this genus in the bay area.

scotch broom
Cytisus scoparius

scotch broom
Cytisus scoparius

yellow corolla
banner generally > 10–25 mm
calyx glabrous
fruit flat, glabrous except margin
branches generally 5-angled [example]
also called scotch broom
common everywhere except the southeast bay

portuguese broom
Cytisus striatus

portuguese broom
Cytisus striatus

yellow corolla
banner generally > 10–25 mm
calyx appressed-hairy
fruit ± inflated, densely white-hairy
branches generally 8–10-angled
common at low elevations

white spanish broom
Cytisus multiflorus

white corolla, possibly with dark or purple lines or spots
banner < 10 mm
leaflets < 10 mm
very rare

2 observed taxons / 1 unobserved taxon / 1 key

Chris’s observations: 5 (4 are research grade)

Locations:

Sanborn CP: 4
San Bruno Mountain State & County Park

Months:

Jan.: 1
Feb.: 1
Mar.: 0
Apr.: 0
May: 0
Jun.: 2
Jul.: 0
Aug.: 1

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Not all sites include this taxon:

genus Cytisus → iNaturalist – Calflora – Jepson eFlora
not yet listed → FNA

Bay Area species: iNaturalist – Calflora