Seedling damping off
Left: Oospores with multiple antheridia. Right: Oospore with intercallary antheridium. Intercallary means that it is with the hyphya like a bead on a strong.
Left: Intercallary (like a bead on a string) oogonium and an antheridium originating from different hyphae = diclinous. Right: Terminal oogonium and an antheridium originating from the same hyphae = monoclinous.
Left: Vesicle forming at some distance from a sporangium. Right: Vesicle forming close to a sporangium.
Left: Inflated, filamentous sporangium = wider than hyphae. Right: Slightly inflated, filamentous sporangium.
Vesicles at various stages of zoospore differentiation.
Left: Spherical sporangium, intercallery oogonium, and an antheridum. Right: Slightly irregular oogonium shape with antheridum.
Left: Slightly irregular oogonium with one small projection on wall. Right: Oogonium with large projections on wall.
Left: Aplerotic have space between oospore wall and oogonium wall Right: Plerotic has no space between oospore wall and oogonium wall.