Complex sentence: Species of "Ulocladium" resemble those of genus "Alternaria" with which they were once included, but "Ulocladium", unlike "Alternaria", do not produce alternariols, tenuazonic acid, altersolanols, or macrosporin.
Split into simpler sentences: Species of "Ulocladium" resemble those of genus "Alternaria" with which they were once included. But "Ulocladium", unlike "Alternaria", do not produce alternariols, tenuazonic acid, altersolanols, or macrosporin.