Galinsoga Ruiz & Pavón

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 : 143-144

52. Galinsoga Ruiz & Pavón 3

Annual herbs. Leaves opposite. Capitula small, in dichasial cymes. Involucral bracts few, in 1-2 rows. Receptacle conical, with scales. Ligulate florets female; tubular florets hermaphrodite. Achenes obovoid-prismatic, the outer somewhat compressed dorsally; pappus of several scales.

Peduncles with erecto-patent hairs less than 0-5 mm and few, short patent glandular hairs; receptacular scales 3-fid; pappus-scales not aristate 1. parviflora

Peduncles with numerous, long patent glandular hairs more than 0-5 mm; receptacular scales entire; pappus-scales aristate 2. ciliata