ELECTRON-MICROSCOPY OF AMEBA-CAPTURING DACTYLELLA-TYLOPAGA, SHOWING THE MORPHOLOGY OF A BASIDIOMYCETE

Dactylella tylopaga, a hyphomycete capturing terrestrial amoebae with adhesive knobs, showed the ultrastructural morphology of the Basidiomy cota in that the cross walls in the hyphae were dolipore septa with pa renthesomes. The parenthesomes were flattened and imperforate. The con idium (40 x 2-3 mu m) of the fungus was composed of two cells with the upper cell bearing an apical, tubular extension. On one occasion, one of the conidia on an agar plate produced teardrop-shaped microconidia (2.5-3 x 1.5-1.8 mu m) on sterigmatic outgrowths of each cell of the two-celled conidium.