Gnaphalium 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 : 128

23. Gnaphalium L. 1

Tomentose annuals without non-flowering shoots. Leaves alternate, semiamplexicaul. Clusters of capitula without subtending leaves, in a terminal corymbose to paniculate or cymose inflorescence. Capitula ovoid to cylindrical. Receptacle flat, without scales. Involucral bracts imbricate, scarious, entirely white or yellow, shining; indurated middle portion of the inner bracts sulcate. Florets tubular, the outer female, in 2-4 rows, the inner hermaphrodite. Achenes short, subterete; pappus-hairs filiform, fragile, free, ciliate at the base, falling in small groups. Pollengrains with narrow, shallow furrows, ovate pores and short, broadly conical spinules.

Literature: M. E. Kirpicznikov & L. A. Kuprianova, Acta Inst. Bot. Acad. Sci. URSS (Ser. 1) 9: 7-37 (1950). Leaves not decurrent, white-tomentose on both surfaces, not asperous above; stem 8-40 cm 1. luteo-album

Leaves decurrent, green and asperous above, white-tomentose beneath; stem 30-80 cm 2. undulatum