Abstract
A key based primarily on vegetative characteristics is given together with a summary of the distribution, and habitats for the 12 erechtitoid Senecios found in New Zealand. These are Senecio quadridentatus Labill., S. dunedinensis Belcher, S. wairauensis Belcher. S. apargiaefolius Walp., S. kermadecensis Belcher, S. biserratus Belcher, S. minimus Poiret, S. bipinnatisectus Belcher, S. glomeratus Desf. ex Poiret, S. hispidulus A. Rich., S. scaberulus (Hook.f.) Drury comb. nov., and S. diaschides Drury sp. nov. Except for the little known Senecio apargiaefolius, a plant portrait of each species is provided.

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