../../../.. jAlbum 39.8 ℹ️ Hymenium: No exposed macroscopic hymenium; sexual spores develop within asci enclosed in globose chasmothecia, while the conspicuous white powdery coating consists mainly of superficial mycelium, conidiophores and chains of conidia</br> ℹ️ Body: White, flour-like superficial colonies on leaves, young shoots and fruits, initially patchy but often becoming confluent; ageing colonies turn greyish, brown to dark brown, with minute dark chasmothecia developing later in the season</br> ⚪⚫ Spore mass white, powdery conidial mass; mature chasmothecia dark brown to black</br> 🌿🍇 Obligate biotrophic parasite of Ribes species; infects leaves, young shoots and berries; conidia spread infections through the growing season while chasmothecia may overwinter and release ascospores in spring</br> 📏 Microscopic</br> 📐 Chasmothecia ∅ ~92–104 µm</br> 🔬 Hyphae ~4–7 µm wide; conidiophores erect, cylindrical, ~92–165 × 9–11 µm; conidia produced in chains, broadly ellipsoid-ovoid to doliiform, ~22–31 × 14–22 µm, containing conspicuous fibrosin bodies; chasmothecia globose, ~92–104 µm, with few mycelioid appendages; each chasmothecium contains a single 8-spored ascus ~80–96 × 60–72 µm; ascospores ellipsoid-ovoid to subcylindrical, ~20–26 × 10–14 µm</br> 🔤 Powdery mildew of gooseberries and currants</br> https://fungarium.info/%D0%9B%D0%B5%D0%BE%D1%86%D0%B8%D0%BE%D0%BC%D0%B8%D1%86%D0%B5%D1%82%D1%8B%20-%20Leotiomycetes/%D0%AD%D1%80%D0%B8%D0%B7%D0%B8%D1%84%D0%BE%D0%B2%D1%8B%D0%B5%20-%20Erysiphales/%D0%AD%D1%80%D0%B8%D0%B7%D0%B8%D1%84%D0%BE%D0%B2%D1%8B%D0%B5%20-%20Erysiphaceae/%D0%9F%D0%BE%D0%B4%D0%BE%D1%81%D1%84%D0%B5%D1%80%D0%B0%20%D0%BC%D0%B5%D1%80%D1%82%D0%B2%D0%BE-%D1%8F%D0%B3%D0%BE%D0%B4%D0%BD%D0%B0%D1%8F%20-%20Podosphaera%20mors-uvae/ 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