Name: Camelia petal blight, Ciborinia camelliae (Syn – Sclerotinia camelliae)
Initial symptoms on petals include darkening of the veins and the appearance of small, brown, irregularly-shaped spots or blotches. These spots rapidly expand on susceptible varieties, until the whole flower is brown and dead. Affected petals are dry or leathery but do not crumble when handled. The darkening of veins gives flowers a distinctive netted appearance. Infected flowers normally fall intact on to the ground prematurely. Sclerotia (small black resting bodies) form at the base of infected petals several weeks after flower fall.