Periptera DC.
Contenido
Descripción
Perennial herbs or subshrubs, pubescent or glabrescent. Leaves petiolate, the blades ovate, triangular, or hastate, sometimes 3-lobed, crenate or subentire, often with a purple blotch along the midvein, lacking foliar nectaries; stipules subulate or filiform. Flowers solitary in the leaf axils or aggregated in terminal panicles or racemes; involucel absent; calyx lobes lanceolate; corolla more or less tubular, the petals erect, sometimes narrow, bright red; androecium exserted, antheriferous at apex, the column more or less pubescent, the anthers yellow or purple; styles 7-15, the stigmas clavate. Fruits schizocarpic; mericarps 7-15, 1-seeded, umbonate dorsally, the lateral walls evanescent at maturity; seeds solitary, glabrous. Base chromosome number: x = 13.A
Discusión taxonómica
Periptera is a wholly Mexican genus of five species, found principally in western Mexico. species occurs from southern Sonora to Chiapas; the other four have very restricted ranges. The genus has its closest affinity with Anoda.A