Helichrysum rupestre, (Rafin.) 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 : 129-130

6. H. rupestre (Rafin.) DC. , Prodr. 6: 182 (1838).

Not aromatic. Stems 10-60 cm, angular. Basal leaves 30-80(-120) mm, linear to narrowly lanceolate or oblanceolate, rarely more than 3 mm wide, narrowest just above the base, white-tomentose on both surfaces. Inflorescence (2-)3-7 cm across; involucre 4-7 mm in diameter, broadly ovoid in bud, becoming patent; bracts laxly imbricate, glabrous, or sparsely lanate at base, the inner usually not more than twice as long as the outer, oblong, acute, scarious. Achenes minutely tuberculate. Calcareous cliffs and walls. W. & C. Mediterranean region. BI Hs It Sa Si.

More robust and with longer leaves than 5 but resembling subsp. (b) in the not very unequal involucral bracts and in not being aromatic. Local populations differing in the length and breadth of the leaves, the form of the inflorescence and the shape of the unopened capitula have often been given specific or subspecific rank. Among these are H. panormitanum Tineo ex Guss. , FI. Sic. Syn. 2: 467 (1844), H. nebrodense Heldr. , Flora (Regensb.) 27: 67 (1844), H. pendulum (C. Presi) C. Presi , FI. Sic. xxix (1826),

and H. stramineum Guss. , FI. Sic. Syn. 2: 467 (1844), all from Sicilia, H. fontanesii Camb. , Mém. Mus. Hist. Nat. (Paris) 14: 270 (1827), from Islas Baléares, and H. boissieri Nyman , Consp. 381 (1879), from Gibraltar. The status of these taxa is uncertain.