On dead branch of unknown deciduous tree in backyard. Each spot is made of tiny black balls on black subiculum. each unit is 0.7mm wide. Seems as an asexual stage. Spores are irregular in shape, with two drops, no septa: 4-4.9 x 7.9-10 mu. Some big lemon-like structures: up to 7.4 mu wide. Update: on sycamore maple: Acer pseudoplatanus.