Alternaria carolinaeana Unamuno, 1941
Dahlia pinnata, from Unamuno (1941a): leaf spot (A), colony (B), and, at higher magnification, six conidia (C)
leaf spots 2-6 x 3-10 mmm, numerous, epiphyllous, mainly near the veins dark brown at first, ultimately becoming pale. Conidiophores cylindrical, ± straight, 2-3 septate; conidia 11-22 x 43-150 µm.
Brandenburger (1985: 624), Unamuno (1941a, 1943a).