Aspergillus, is a fungus found worldwide in the environment. This fungus is the causative agent of aspergillosis- which can be a life threatening infection. For world aspergillosis day (1/2/19) I have collated some images of the fungus itself. Hopefully this is helpful!
Firstly, here is an image of the fungus as seen by the naked eye. This species of Aspergillus is Aspergillus fumigatus- which grows greenish and has a powdery texture.
Under the microscope, the fungus can look quite different. Here is a diagram showing the structures of the fungus. The longer thin parts are called hyphae. The flower like part on the top of the diagram is called the conidiophore, which produces the spores (also called conidia). These conidia are the small round bits on the schematic- and these are the infective parts of the fungus.
Ok so now for some real life images of the fungus. The image below shows spores of the fungus in liquid.
These spores can swell and after 6-8 h grow to form hyphae (as seen in the image below).
If there is an interphase with the air- these hyphae can produce conidiophores (and subsequently form spores themselves). This is shown in the image below.
I have taken all these images myself- please feel free to use them (but please credit me (Eloise Ballard) if you do).