C. longifolia longifoliaC. longifolia R.Br.

Involucral bracts with a white, opaque limb. Leaves 3–8 cm long, 2–6 mm wide, linear to lanceolate, glabrous on the upper surface, often white tomentose underneath, aromatic, viscid. Involucre oblong, 1 mm diam. Florets 6–8. Shrub 2–3 m high with yellowish stems. Widespread. Tall forests and margins of RF. Fl. summer–autumn