Cercospora is a genus of ascomycete fungi. Most species have no known sexual stage, and when the sexual stage is identified, it is in the genus Mycosphaerella. Most species of this genus cause plant diseases, and form leaf spots. It is a relatively well-studied genus of fungi, but there are countless species not yet described, and there is still much to learn about the best-known of the species. Selected species Cercospora acetosella - found on sheep sorrel and other docks Cercospora aciculina Cercospora agerati Cercospora alabemensis Cercospora alismatis Cercospora althaeina Cercospora angreci - causes leaf spot of orchids Cercospora angulata Cercospora apii - causes leaf spot on celery, and found on other plants, including Impatiens Cercospora apii f.sp. clerodendri Cercospora apiicola - causes leaf spot on celery Cercospora arachidicola - causes peanut leaf spot Cercospora arctii Cercospora arctii-ambrosiae Cercospora asparagi - found on asparagus Cercospora atro-marginalis Cercospora atrofiliformis - causes "black stripe" on sugarcane Cercospora beticola - causes leaf spot on Beta vulgaris and spinach Cercospora bolleana - found on figs Cercospora bougainvilleae Cercospora brachiata Cercospora byliana Cercospora brachypus - found on grapes Cercospora brassicicola - infests many cole crops Cercospora brunkii - found on Pelargonium and Geranium. Cercospora bunchosiae Cercospora canescens Cercospora cannabis - causes olive leaf spot on Cannabis spp., and is found on hops Cercospora cantuariensis - found on hops Cercospora capsici - causes "frogeye" leaf spot on peppers Cercospora caribaea Cercospora carotae - causes carrot leaf blight Cercospora circumscissa Cercospora citrullina - causes "cucurbit leaf spot" on watermelon and cucumber plants Cercospora clemensiae Cercospora coffeicola - infests coffee plants Cercospora coryli - found on hazels Cercospora corylina - found on hazels Cercospora eleusine - causes leaf spot of Finger millet Cercospora cf. flagellaris syn. C. piaropi Cercospora fragariae - causes strawberry leaf spot Cercospora fuchsiae Cercospora fusca Cercospora fusimaculans - found on many grasses Cercospora gerberae Cercospora halstedii Cercospora handelii Cercospora hayi Cercospora hydrangeae Cercospora kaki Cercospora kikuchii - causes leaf blight and purple seed stain on soybean Cercospora lentis - found on lentil Cercospora liquidambaris Cercospora longipes - causes brown spot on sugarcane Cercospora longissima - found in several types of lettuce Cercospora malloti - found on Mallotus species in Thailand Cercospora mamaonis - found on papaya Cercospora mangiferae - causes mango leaf spot Cercospora medicaginis - found on alfalfa Cercospora melongenae Cercospora minima - found on pear leaves Cercospora minuta Cercospora musae - found