Senecio helenitis subsp. helenitis

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 : 200

(a) Subsp. helenitis (S. spathulifolius Griesselich , S. lanceolatus (Lam.) Gren. , non Burm. fil.): Stock erect, usually simple. Stem sparsely arachnoid-lanate, with some sessile glands and eglandular straight hairs. Basal leaves not fleshy, abruptly or gradually narrowed at base into a winged petiole longer than the lamina, subentire or irregularly dentate, persistently greyish- or whitisharachnoid-tomentose beneath, sparsely so above. Involucre arachnoid-lanate more or less throughout; bracts green. Ligules c. 13 (or sometimes absent), 8-12 mm. Achenes densely hairy (very rarely glabrous). 2« = 48. Damp, grassy or stony places. Throughout most of the range of the species.