Herissantia Medik.
Contenido
Descripción
Herbs, subshrubs, or shrubs, erect or decumbent, pubescent or hirsute, sometimes viscid. Leaves petiolate (sometimes subsessile), the blades ovate, cordate, dentate, lacking foliar nectaries; stipules minute, subulate, caducous. Flowers often solitary in the leaf axils or borne on several-flowered peduncles; involucel absent; calyx lobes lanceolate or ovate; petals white; androecium included, antheriferous at apex; styles 1014, the stigmas capitate. Fruits schizocarpic, oblate, inflated, pendulous; mericarps 10-14, pubescent or hispid, with fragile walls, dehiscent, 1-3- seeded; seeds glabrous or minutely scabridulous. Base chromosome number: x = 7.A
Discusión taxonómica
Herissantia is a small Neotropical genus, one of whose species (H. crispa) is widely distributed from the United States to Argentina as well as elsewhere. It is doubtless adventive through much of its range. The remaining species are more narrowly distributed; one in Mexico, one in the West Indies, and the others in South America.A