A fungal study for school. Trichoderma harzianum is a filamentous fungi (mold) who is commonly used as a fungicide.
On the macroscopic level, T. harzianum appears mottled green, ranging from dark green to a pale sage. Small clumps grow haphazardly, and, due to their white edges, are reminiscent of folios lichen. White filaments can be seen elsewhere in the fungi as well, predominately where it is less pigmented (represented here by Xs).