Conidium ontogeny in Hyphomycetous fungi
Spegazzinia tessarthra is dematiaceous hyphomycetes,containing two types of conidia(a and b types).."a" conidium composes of 4 to 8 nearly globose,dark brown cells with spines,which grown on the long conidiophore,and "b" conidium is almost subspherical and smooth,pale to dark brown in colour,which grown on the short conidiophore.The patterns of conidiogenesis of the fungi were observed by the method of slide culture.Two types of conidia can germinate in holoblastic-solitary type and are formed by outer and inner walls of the blastic conidiogenesis cells.