Senecio smithii, DC.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 198

30. S. smithii DC. , Prodr. 6: 412 (1838).

Perennial 60-120 cm. Stems erect, stout, usually branched only in inflorescence, floccose-lanate to glabrescent. Basal leaves (10-)20-35 cm, oblong-ovate, truncate to subcordate at base, dentate, densely floccose-lanate beneath, sparsely so above, with petiole about equalling lamina; lower cauline similar but smaller; upper cauline ovate-triangular, sessile. Capitula many, 40-50 mm in diameter, in a lax or dense corymb. Involucre 10-13 mm, sparsely arachnoid-lanate, dark green or blackish, with 8-20 supplementary bracts \ as long as involucre. Ligules 15-20, 15-25 mm, white. Achenes 5-9 mm. Naturalized in Scotland. [Br.] (Temperate South America.) Sect, Pericallis (Webb) O. Hoffm. Perennial herbs, glabrous or variously hairy. Leaves broad, more or less palmately lobed, palmately veined. Involucre without supplementary bracts. Ligules usually purple. Achenes subcylindrical, usually hairy.