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Not since found, and hence doubtful."* The material agrees thoroughly with the description and so removes this from the list of doubtful species. 144. Cebcospoba vaeia Peck. On Viburnum Lentago L. Not common or abundant. Midsummer. 145. Cebcospoba zebbina Pass. On Trifolium pratense L. Rather a common disease of the red clover, but probably not causing much loss to the crop. 146. SCOLECOTBICHUM GBAMINIS Fuckel. On Muhlenbergia Mexicana (L.) Trin. . Common, late summer and autumn. 147. Polythbin...cium Tbifolii Kunze. On Trifolium pratense L., and T. repens L. Abundant on both white and red clover during the entire summer. This is said to be the conidial stage of an Ascomycete but is retained here as the perfect form was not collected and the following quotation indicates that the species is really not well known. "On account of the characteristics and habits of the mycelium and of the stroma sometimes produced, it has been assumed that the perfect stage would be a species of Phyllachora, and the plant actually bears also the name Phyllachora Trifolii (Pers.) Fckl."f 148.
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