Amberboa (Pers.) Less.

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 : 253

132. Amberboa (Pers.) Less. 1

Annuals or biennials. Capitula medium, solitary, sessile to long-pedunculate. Involucre ovoid; bracts imbricate, appressed, ovate or oblong, the inner row with appendage. Marginal florets sterile, radiate. Anthers long-caudate at base. Achenes oblong,

compressed, villous, the apex denticulate, the centre umbilicate; pappus of several rows of scale-like hairs, persistent, shorter than to about as long as the achene.