Compositae source details
Schinz & Thell. in Vierteljahrsschr. Naturf. Ges. Zürich 53. 1908.
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Senecio helenitis subsp. gaudinii (Gremli) Schinz & Thell. accepted as Tephroseris longifolia subsp. gaudinii (Gremli) Kerguélen (original description)
