Describes achene features, invasion and natural history of two noxious Senecio species (Senecio madagascariensis and Senecio inaequidens) and compares them to achenes of four similar species (Senecio vulgaris, Crepis capillaris, Pentanema britannicum, and Jacobaea vulgaris).
J. Neudorf, A. Salzl and R. Wang
Credit: 2023 Canadian Food Inspection Agency