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SUMMARY
| 1. | Eighteen Sporonema species have been studied and compared. | ||||
| 2. | The transfer of S. hiemale Desm. To Sirexcipula is proposed on the basis of its catenate conidia. | ||||
| 3. | The transfer of S. platani Bäuml. To Placosphaeria is proposed because of the multiloculate nature of the pycnidia. | ||||
| 4. | Sporonema pallidum Ell. & Ev. is shown to have septate conidia and is rejected as a Sporonema. | ||||
| 5. | A new species on the leaves of Fraxinus is described as S. fraxini Limber. | ||||
| 6. | It is proposed that Excipula diapensiae Rostr. be transferred to Sporonema to give it an acceptable name under the international rules. | ||||