Xanthium spinosum
Member of
cockleburs (genus Xanthium)
sunflower family (family Asteraceae)
dicots (class Magnoliopsida)
flowering plants (subphylum Angiospermae)
Toxicity of cocklebur (Xanthium spp.):
1 – Skin contact with these plants can cause symptoms ranging from redness, itching, and rash to painful blisters like skin burns.
3 – Ingestion of these plants is expected to cause nausea, vomiting, diarrhea and other symptoms that may cause illness but is not life-threatening.
Chris’s observations: none
Taxon info: iNaturalist – Calflora – CalPhotos – Jepson eFlora – FNA
Bay Area species: iNaturalist – Calflora