Aster macrophyllus, 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 : 113

1. A. macrophyllus L. , Sp. Pl. ed. 2, 1232 (1763).

Perennial 30-80 cm, with non-flowering rosettes. Stem glandular-puberulent above, green or purple-tinged. Lower leaves petiolate, the lamina 6-14 cm wide, cordate; upper leaves ovate. Capitula in corymbs. Involucral bracts in several rows, ovate to ovatelanceolate, acute or the outer obtuse, the longest 6-10 mm, the outer 1-25-1-75 mm wide, much shorter than the inner, the apex with green zone fading gradually below, appressed. Ligules 9-20, pale violet, sometimes fading to white. Locally naturalized in N. Europe. [Ge Ho Po.] (North America.)