Senecio pyrenaicus, L.

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 : 197

25. S. pyrenaicus L. in Loefl., Iter . Hisp. 304 (1758)

( S. tournefortii Lapeyr. ).

Perennial 15-60 cm. Stock shortly creeping. Stems ascending to erect, branched above or only in inflorescence, glabrous or shortly appressed-hairy above. Leaves crowded at the middle of the stem, glabrous or sparsely crispatehairy beneath, entire or dentate, more or less petiolate; upper cauline rapidly decreasing in size, linear to linear-lanceolate, sessile. Capitula 3—8(—15), 20-40 mm in diameter, in a corymb. Involucre 6-8 mm, sparsely crispate-hairy, with 5-8 supplementary bracts c. 1 as long as the involucre. Ligules 10-16,10-15 mm, yellow. Achenes 3-5-5 mm, glabrous. 2/z = 40. Grassy and rocky places. • Mountains of S. W. Europe. Ga Hs Lu. Very variable; plants from the Sierra Nevada and Sierra Tejeda ( S. tournefortii var. granatensis Boiss. ) have rather coriaceous, often entire, obtuse leaves, plants from the Sierra de Guadarrama and Sierra de Gredos (S', tournefortii var. carpetanus Willk. ) are usually entirely glabrous and have more strongly dentate leaves, while plants from the Serra da Estrêla ( S. cespitosus Brot. , FI. Lusit. 1: 390 (1804)) have acute, often entire leaves and capitula 20-25 mm in diameter. This variation does not seem to be sufficiently distinct for subspecies to be recognized. (26-28). S. doronicum group. Perennial 20-60 cm. Stock short. Stems erect, simple, or branched only in inflorescence, arachnoid-lanate or glabrescent. Basal leaves 10-25 x 2-5-6 cm, elliptical to ovate, finely repand-dentate to subentire, subacute; lower cauline similar, narrowed at base; upper cauline few, oblong- to linear-lanceolate, sessile, subamplexicaul. Capitula 25-60 mm in diameter, solitary or in a lax corymb. Ligules 12-20 mm, yellow or orange. Achenes 5-7 mm, glabrous. A very critical group in need of further investigation. 1 Ligules pale yellow

2 Leaves thin, soft 27. scopolii

2 Leaves thick, somewhat coriaceous 26. doronicum

1 Ligules golden-yellow or orange

3 Plant stout; involucre 10-15 mm, with 12-20 supplementary bracts 26. doronicum

3 Plant slender; involucre 8-10 mm, with 10-12 supplementary bracts 28. Iagascanus