The 2-celled colourless to pink spores (conidia) are bilaterally symmetrical and are produced in long chains from the unbranched conidiophores. The youngest spore is at the bottom of the chain and is always attached at an oblique angle to the conidiophore. Occurring in soil and decaying plant materials, often found as an epiparasite on black knot of plum. Holomorph: Hypomyces. Ref: Rifai and Cooke 1966