Prototaxites stellaviatori
Prototaxites stellaviatori was a species of fungus, casually described as a mushroom.

The species was composed of exotic material found not only in normal space but also in a discrete subspace domain known as the mycelial network. Its fungal roots, or mycelium, fanned out into infinity across the universe to form the mycelial network. ()

In 2256, a strain of P. stellaviatori was grown in the cultivation bay aboard the . Its mycelium spores were harvested for use in the Discoverys experimental spore drive. ()

In 2257, the Class 4 moon Delta 2 was terraformed using the species in order to replenish the Discoverys supply of spores, as the original supply had died due to mycelial network corruption caused by the . ()

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