Sida L.
Contenido
Descripción
Perennial herbs or subshrubs, erect or prostrate, glabrous or pubescent, sometimes viscid. Leaves petiolate to subsessile, the blades ovate (sometimes lobed), elliptic, rhombic, or linear, usually dentate, lacking foliar nectaries. Flowers solitary in the leaf axils, in axillary glomerules, or in dense or open terminal inflorescences; pedicels shorter than to much longer than the calyces; involucel absent; calyx 5- lobed, often 10-ribbed at the base and plicate in bud; corolla white, yellow, orangish, rose, or purplish, sometimes with a dark red center; androecium included, usually pallid, antheriferous at apex; styles 5-14, the stigmas capitate. Fruits schizocarpic, glabrous or pubescent; mericarps (Fig. 97) 5-14, usually indurate, usually laterally reticulate, indehiscent below with well-differentiated dorsal wall, indehiscent or dehiscent apically, usually with 2 apical spines more or less well developed or muticous; seeds solitary, glabrous. Base chromosome numbers: x = 7, 8.A
Discusión taxonómica
Sida is a genus of about 150 species from the Americas, Africa, Asia, and Australia, of which 35 occur in Mexico.A