Análisis micromorfológico de Senecio subserie Polyphylli (Senecioneae, Asteraceae)

A micromorphological study of the species of Senecio subseries Polyphylli is presented. Vegetative (leaf trichomes) and reproductive characters (phyllary and achene trichomes; middle vein of the tubulose corolla teeth; anther collars, anther bases, and connectival appendages; pollen; style branches; achenes) are analyzed. A key based on microcharacters for the identification of the species is presented