Arctium lappa, 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 : 215

2. A. lappa L. , Sp. Pl. 816 (1753)

( A. majus Bernh. , Lappa officinalis All. , L. major Gaertner ).

Plant 90-150 cm. Stems, petioles and peduncles pubescent to subglabrous. Each main branch of inflorescence corymbose. Basal leaves up to 50 cm, broadly ovate, cordate, usually obtuse; petioles solid. Peduncles 3-10 cm. Involucre 20-25 x 35-42 mm in fruit, globose in bud, hemispherical and widely open above in fruit, shiny goldengreen, glabrous or subglabrous. Florets about as long as involucral bracts. Achenes 6-7 mm; pappus 1-3-5 mm. In = 36. Most of Europe except the extreme north. All except Az?Cr Fa Is Lu Sb?Si.