jointed charlock

Raphanus raphanistrum

Member of radishes (genus Raphanus)
mustard family (family Brassicaceae)
dicots (class Magnoliopsida)
flowering plants (subphylum Angiospermae)

There are no other wild species of this genus in California.

There are no other wild members of this species in California.

wild and domestic radish
Raphanus raphanistrum ssp. sativus

petals pink to purple or rarely white [check for pale purple veins?]
basal leaf blade 2–60 cm long, 1–20 cm wide, entire or pinnately lobed or divided

1–12 lateral lobes, dentate

fruit is 2–6 cm long, 5–10 mm wide

not constricted between the seeds and does not break up into one-seeded segments when mature

Raphanus raphanistrum ssp. raphanistrum

petals pale yellow [cream?], ± white in age
leaf blade 3–15 cm long, 1–5 cm wide, entire or pinnately lobed

2–8 lateral lobes, in pairs, dentate

fruit is 3–9 cm long, 3–5 mm wide

constricted between the seeds and breaks up into one-seeded segments when mature

Jepson notes that the two kinds hybridize to produce swarms highly variable in flower color and fruit constriction. In fact, one research paper argues that the hybrids have entirely wiped out the progenitor subspecies in California. [source]

Toxicity of wild radish (Raphanus raphanistrum):
3 – Ingestion of these plants is expected to cause nausea, vomiting, diarrhea and other symptoms that may cause illness but is not life-threatening.

2 observed taxons / 1 key

Chris’s observations: 12 (11 are research grade)

Locations:

Coyote Hills RP: 3
Wilder Ranch SP: 2
Big Basin SP
Coyote Creek Trail
Ed R. Levin CP
Garin RP
Golden Gate National Recreation Area
Russian Ridge OSP
San Tomas Aquino Creek Trail

Months:

Jan.: 1
Feb.: 1
Mar.: 1
Apr.: 3
May: 3
Jun.: 1
Jul.: 1
Aug.: 0
Sep.: 0
Oct.: 1

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

Bay Area species: iNaturalist – Calflora