New concepts in the interpretation of conidiogenesis in deuteromycetes.

Single-word terms (e.g. phialidic) cause problems in interpreting conidiogenesis. These problems can be resolved by meticulous description of each developmental stage (e.g. spore initiation, maturation, delimitation, secession). Different modes of spore wall building are significant and need further investigation. Blastic and thallic development perhaps do not differ fundamentally.