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Viewing the fungi under a microscope, Micheli was reminded of the shape of an aspergillum (holy water sprinkler), from Latin spargere (to sprinkle), and named the genus accordingly. [2] [3] Aspergillum is an asexual spore-forming structure common to all Aspergillus species; around one-third of species are also known to have a sexual stage. [4]
Penicillium sp. under bright field microscopy (10 × 100 magnification) with lactophenol cotton blue stain The thallus ( mycelium ) consists of highly branched networks of multinucleated , usually colourless hyphae , with each pair of cells separated by a septum .
Most of the fungal body consists of microscopic threads, called hyphae, extending through the substrate in which it grows. The mycelia of microfungi produce spores that are carried by the air, spreading the fungus. [citation needed] Many microfungi species are benign, existing as soil saprotrophs, for example, largely unobserved by humans.
Athlete's foot fungus may infect any part of the foot, but most often grows between the toes. [3] The next most common area is the bottom of the foot. [6] The same fungus may also affect the nails or the hands. [4] It is a member of the group of diseases known as tinea. [7]
The appearance of the fungus under the microscope can vary but generally shows wide (10–20 micron), ribbon-like filaments that generally do not have septa and that—unlike in aspergillosis—branch at right angles, resembling antlers of a moose, which may be seen to be invading blood vessels. [13] [38]
Peziza spp. fruit body spore sacs teased out and viewed under a microscope. Peziza is a large genus of saprophytic cup fungi that grow on the ground, rotting wood, or dung.Most members of this genus are of unknown edibility and are difficult to identify as separate species without use of microscopy.
The fungus forms white, fluffy colonies that can be observed as having clear, colorless undersides. Under a microscope, it displays narrow vegetative hyphae (the main growth structure of the fungus) along with fertile hyphae that branch out and bear conidiogenous cells (the specialized cells where spores are formed). The spores themselves are ...
Sporangium and zoospores of the chytrid fungus B. dendrobatidis, under a scanning electron microscope Chytrid sporangium and zoospores under the microscope Growth continues until a new batch of zoospores are ready for release.