Basionym: Helminthosporium stahlii Stevens. Trans. III. Acad. Sci. 10:208 1917.
Description：
Leaf spots merely indefinite yellowish areas, or sometimes brown angular areas, up to 5 mm wide. Fruiting amphigenous, more abundant on the lower surface, dark, effuse, densely velutinous, suborbicular or angular and vein limited, up to 5 mm wide. Secondary mycelium absent. Stromata absent or just a few brown cells. Conidiophores up to 18 in a laxly divergent fascicle, emerging through the stomata, yellowish olivaceous to olivaceous brown, substraight or slightly sinuous, geniculate, branched 1-3 times, septate, shortly tapered to the apical conidial scars which is later displaced to remain visible as a short lateral peg, 50-150 × 4-7 μm. Conidia concolorous with the conidiophores, mostly clavate or cylindric, broadly rounded at the apex, base apiculate with a truncate hilum, the longer ones long-ellipsoid or even slightly obclavate, 1-7 septate, most commonly 3 septate, sometimes slightly constricted, 20-60 × 4-7 μm.
Phylum：Ascomycota >> Class： Dothideomycetes >> Order： Dothideomycetes 
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