The aleuriospores are solitary, terminal cells almost always associated with a smaller basal cell. This appearance justifies the use of the term of 'bicellular conidia'. The episporal ornamentation, which are flat to dome-shaped structures of varying sizes at the beginning, steadily increase in number and become taller and conical during the process of maturation. Figs 1, 2. The cytoplasm contains numerous mitochondria, glycogen particles and ribosomes.
Arrows indicate fat globules.
TEM features of mature, thick-walled, ornamented aleuriospores. The spore wall is nearly 2 m thick. The epispore shows finger-like projections of various sizes and shapes corresponding to spore ornaments that are more osmiophilic than other regions of the spore wall. Slightly overexposed image of the spore wall showing ornaments on which both bound and free globules are present. The globules are up to 50 nm in diam.