Hyaline septate hyphae, conidiophores, phialides, macroconidia, and microconidia are observed microscopically. Macroconidia are two to multicelled, are sickle-shaped, and have a distinct basal foot cell and pointed distal ends. Fusarium grow rapidly on Sabouraud dextrose agar at 25°C and produce woolly to cottony, flat, spreading colonies.From the front, the color of the colony may be white, cream, tan, salmon, cinnamon, yellow, red, violet, pink, or purple. From the reverse, it may be colorless, tan, red, dark purple, or brown.
The teleomorph of this organism is Gibberella zeae, and is characterized by purple to black perithecia.
Tom Volk’s page on Fusarium graminearum, aka Gibberella zeae