Cultures slower growing than those of H. rufa, H. schweinitzii (Fr.) Sacc. and H. atrogelatinosa, more or less tomentose, opaque, rarely discolours media; conidia formed within seven days, forming a sage green outer zone. Mycelium 3-8 µ diameter; septate. Conidiophores produced usually singly 8-100 µ long, septate, branching usually immediately below the septa. Phialides borne either as short lateral branches or in terminal clusters of 2-3, usually short. 2.5-3.5 x 3.5 µ. Conidia mostly globose 1.5-3.5 µ, pigmented and minutely echinulate, usually aggregated into small mucilaginous balls, 10 µ diameter.

Chlamydospores not present.

Although appearing different in cultural characters, conidia and conidiophores are typical of those of T. viride.