Sida rhombifolia, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 249

1. S. rhombifolia L. , Sp. Pl. 684 (1753).

Low shrub, puberulent, especially on lower surface of leaves. Stems 30-80 cm, slender, stiff, straight. Leaves 3-6 x 1-3 cm, rhombic-ovate to narrowly oblong, crenate-serrate at least in apical half; petiole short. Flowers axillary, solitary; pedicels 2-4 cm. Sepals rhombic, apiculate; petals 10-12 mm, obovate-cuneate, dull yellow. Mericarps 7-12, pale brown, reticulate, with 1 or 2 prominent stylar beaks. Cultivated as a medicinal plant, and naturalized on roadside and waste ground in the Açores and Portugal. [*Az Lu.] (Africa, America, S. & E. Asia.)