Fungus are a class of monsters, represented by F.
The fungi are of little threat to a player, and all leave corpses that are classified as vegan food.
Lichen, shriekers, and violet fungi can move slowly; the molds are all sessile and unable to move.
Fungi in SLASH'EM behave somewhat differently than in vanilla. The first change is that any fungus that leaves a corpse, other than a lichen, has a 90% chance of reviving in the same manner as a troll (however fungi only leave corpses 1/3 of the time).
The second change is that fungi may grow on old corpses as opposed to the corpse simply rotting away over time.
Lastly, there are two new types of mold, black and disgusting, which are dangerous to new players but whose corpses are safe to eat and may provide poison resistance.
Growth from corpses
After 51 turns, there is a 50% chance that a fungus will grow from an old corpse, as long as the corpse is not "in adverse conditions", meaning that the corpse must not be acidic or located within/on top of water, ice, or lava.
Only 1 in 54 eligible corpses will grow into a lichen, and those themselves only leave corpses 1 time in 3. Thus, it is best to eat corpses if you are hungry, farming for lichens only if you are satiated or the corpse is poisonous or thought to be old and tainted.
It may also be useful to eat larger corpses for the extra nutrition, and leave small ones for mold growth; only one mold may grow on a corpse, regardless of size, and corpses of small creatures tend to give negligible amounts of nutrition.
Fungi, division of simple plants that lack chlorophyll, true
stems, roots, and leaves. Unlike algae, fungi cannot
photosynthesize, and live as parasites or saprophytes. The
division comprises the slime molds and true fungi. True
fungi are multicellular (with the exception of yeasts); the
body of most true fungi consists of slender cottony
filaments, or hyphae. All fungi are capable of asexual
reproduction by cell division, budding, fragmentation, or
spores. Those that reproduce sexually alternate a sexual
generation (gametophyte) with a spore-producing one. The
four classes of true fungi are the algaelike fungi (e.g.,
black bread mold and downy mildew), sac fungi (e.g., yeasts,
powdery mildews, truffles, and blue and green molds such as
Penicillium), basidium fungi (e.g., mushrooms and puffballs)
and imperfect fungi (e.g., species that cause athlete's foot
and ringworm). Fungi help decompose organic matter (important
in soil renewal); are valuable as a source of antibiotics,
vitamins, and various chemicals; and for their role in
fermentation, e.g., in bread and alcoholic beverage