Cercospora coffeicola. [Descriptions of Fungi and Bacteria].
Abstract A description is provided for Cercospora coffeicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Coffea spp. DISEASE: Brown eye spot of coffee; symptoms occur on leaves and berries. On the former the small chlorotic spots expand, becoming deep brown but lighter in colour on the lower surface; the centre becomes grey white and surrounded by a ring of dark brown tissue, 5-15 mm diam., sometimes with a yellowish halo. This is most distinct on the upper leaf surface; the dark sporulation is seen in the greyish area. Leaves may be shed. On green berries lesions are brown, sunken, irregular or oval with ashy centres, rarely > 5 mm long and sometimes with a purplish surround. Infection may penetrate the berry thus causing the pulp to stick to the bean during fermentation. GEOGRAPHICAL DISTRIBUTION: Throughout the tropics (CMI Map 59, ed. 4, 1973). TRANSMISSION: Conidia probably windborne mostly during the day. The possible role of any other hosts seems unimportant.