. Fi<;. 149. — Ustilago mat/dis. Diseased Maize-lieuds after removal of enclosing leaves. The heads are beset with smut-boils of all sizes, some ruptured, others still unbroken, (v. Tiibeuf phot.) of the promycelium may each develop directly into hyphae capable of infecting a new host.

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897