This illustration shows an enlarged view of the mycelium, ascocarp, etc., of one of the mildews, Erysiphe: c, erect hyphae forming spores or conidia; h, haustoria penetrating epidermis of leaf; a, ascocarp or perithecium.

Mycelium

This illustration shows an enlarged view of the mycelium, ascocarp, etc., of one of the mildews, Erysiphe:…