Publication: Sp. Pl. 2: 868. 1753.
selected vouchers: WTU
Notes: FNA 20: "Senecio viscosus is a smelly, Eurasian weed now widely scattered in areas of cool damp climates, often as a casual waif. The viscid hairs trap wind-blown particles of sand, dust, and soot, which give the surfaces varying textures and colors."