Jasonia Cass.

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 : 138

35. Jasonia Cass. 1

Perennials. Leaves simple, alternate. Capitula medium, in a cymose-paniculate or corymbose inflorescence. Involucral bracts in several rows. Receptacle flat or slightly convex, without scales. Florets yellow, the outer sometimes ligulate. Tubular florets hermaphrodite. Achenes fusiform. Pappus-hairs in 2 rows, the outer short, the inner long, denticulate.

Leaves erecto-patent, acute; ligules absent 1. glutinosa Leaves patent, obtuse; ligules usually present 2. tuberosa