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Unknown 55 = Trichoderma harzianum
Culture: Colonies are fast growing, at first white and downy, later developing yellowish-green to deep green compact tufts, often only in small areas or in concentric ring-like zones on the agar surface.

Microscopy: Conidiophores are repeatedly branched, irregularly verticillate, bearing clusters of divergent, often irregularly bent, flask-shaped phialides. Conidia are mostly green, sometimes hyaline, with smooth or rough walls and are formed in slimy conidial heads (gloiospora) clustered at the tips of the phialides.

Comment: Trichoderma is a very common genus especially in soil and decaying wood. Gliocladium (with strongly convergent phialides) and Verticillium (with straight and moderately divergent phialides) are closely related genera. Trichoderma viride has been reported as a causative agent of pulmonary fungus ball and of CAPD associated peritonitis.
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