Cienfuegosia Cav.
Contenido
Descripción
Perennial herbs or subshrubs (sometimes shrubs) with procumbent, ascending, or erect stems, glabrous or pubescent, more or less gland-dotted throughout. Leaves petiolate, the blades linear, elliptic, digitately divided, or reniform, entire or serrate, pubescent to glabrous, with or (in ours) without adaxial foliar nectaries; stipules subulate or lanceolate to foliaceous (and clasping). Flowers solitary or sympodial in the leaf axils; pedicels with or without trimerous involucellar nectaries at apex; involucel of ca. 9 bractlets, sometimes reduced to 3 by lateral connation, sometimes absent; calyx 5-lobed, usually more or less prominently gland-dotted; corolla yellow (sometimes nearly white), pink, or purple, with or without a dark basal spot; androecium included, apically 5-dentate, the column pallid or dark red; style single, sometimes divided apically; stigmas usually 3, capitate or decurrent. Capsules usually 3-locular, glabrous or pubescent; seeds densely sericeous to minutely puberulent, several per locule. Base chromosome number: x = 10.A
Discusión taxonómica
Cienfuegosia is a genus of 26 species extending from Argentina to Mexico, the West Indies, and southernmost Florida and Texas; the genus also occurs in Africa, the Arabian peninsula, and Madagascar. Three species are known from Mexico, and a fourth, C. drummondii (A. Gray) Lewton, known from Texas, may also occur in northern Tamaulipas.A