title: Morphology of colony variants of the rough form of Dermatophilus spp.
abstract: A technique is described for the preparation of intact colonies of Dermatophilus and their study under the scanning electron microscope. Using this technique with 38 strains of the organism it is possible to describe for the first time the patterns of colony morphology and to study the relationship of hyphae, cocci and zoospores in situ. Colonies were found to possess both vegetative and aerial hyphae. The various patterns of mycelial activity and structure that were seen raised serious doubts about the previous concepts of the mode of propagation and thus the classification of Dermatophilus within the Actinomycetales.
mesh_terms: D000192:Actinomycetales / Q000145:classification / Q000254:growth & development / Q000648:ultrastructure*; D002455:Cell Division; D005658:Fungi / Q000145:classification; D014644:Genetic Variation