It starts long-linear, epidermal and running along the leaf vein or leaf margin, thereupon it broadens into an elongate blotch, usually located along the leaf margin and tentiformed and sometimes completely folded upwardly.
It starts long-linear, epidermal và running along the leaf vein or leaf margin, thereupon it broadens into an elongate blotch, usually located along the leaf margin và tentiformed và sometimes completely folded upwardly.