# Fungus
Fungus are a class of monsters, represented by ​F.

F&nbsp;lichen
F&nbsp;brown mold
F&nbsp;yellow mold
F&nbsp;green mold
F&nbsp;red mold
F&nbsp;shrieker
F&nbsp;violet fungus
The fungi are of little threat to a player, and all leave corpses that are classified as vegan food.
They are immune to sickness, so players polymorphed into a fungus can safely eat old corpses.
Lichen, shriekers, and violet fungi can move slowly; the molds are all sessile and unable to move.

Contents

1 Body parts
2 Variants

2.1 SLASH'EM

2.1.1 Growth from corpses
2.1.2 Strategy

2.2 SporkHack
2.3 SpliceHack

3 Encyclopedia entry
4 References

Body parts
Fungus refers to the grouping of body parts for the forms of rhyzomic life. It affects the messages referring to the appropriate body parts as follows:[1]

Bodypart[2]
Description

Arm
Mycelium

Eye
Visual area

Face
Front

Finger
Hypha

Fingertip
Hypha

Foot
Root

Hand
Strand

Handed
Stranded

Head
Cap area

Leg
Rhizome

Light headed
Sporulated

Neck
Stalk

Spine
Root

Toe
Rhizome tip

Hair
Spores

Blood
Juices

Lung
Gill

Nose
Gill

Stomach
Interior

Variants
SLASH'EM
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;[3] 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,[4] as long as the corpse is not "in adverse conditions";[5] specifically, the corpse must not be acidic[6] or located within/on top of water, ice, or lava.
The fungus grown will be a random member of the fungus class, biased towards sessile fungi,[7] and will destroy the corpse via its growth:

Fungus
Likelihood

Brown
14.8%

Green
14.8%

Red
14.8%

Yellow
14.8%

Black
14.8%

Disgusting
14.8%

Violet fungus
3.7%

Shrieker
3.7%

Lichen
3.7%

Strategy
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, and farm for lichens only if you are satiated, the corpse is poisonous or else is 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.
However, for monks, farming may be a good idea in order to keep the vegetarian conduct.

SporkHack
SporkHack introduces the F&nbsp;gray fungus, which has a passive disease attack.

SpliceHack
SpliceHack adds some new fungi:[8]

F volatile mushrooms are explosive
F screamers can deal sonic damage
Moldiers are humanoid fungi that can use items
F Brown moldier
F Yellow moldier
F Green moldier
F Red moldier
Fungi grow on corpses, similar to SLASH'EM.[9]
All fungi receive an extra d6 damage from copper.[10][11][12]

Encyclopedia entry

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
production.

[ The Concise Columbia Encyclopedia ] 

References

↑ polyself.c in NetHack 3.4.3, line 1177

↑ hack.h in NetHack 3.4.3, line 226

↑ mkobj.c in SLASH'EM 0.0.7E7F2, line 764

↑ mkobj.c in SLASH'EM 0.0.7E7F2, line 765

↑ do.c in SLASH'EM 0.0.7E7F2, line 1685

↑ mkobj.c in SLASH'EM 0.0.7E7F2, line 811

↑ do.c in SLASH'EM 0.0.7E7F2, line 1680

↑ https://github.com/NullCGT/SpliceHack/blob/Spl-R-1.1.0/src/monst.c

↑ https://github.com/NullCGT/SpliceHack/blob/Spl-R-1.1.0/src/do.c#L2016

↑ https://github.com/NullCGT/SpliceHack/blob/b3a1427a43fd6ecc6088129e72ac594a1d3e531f/src/mondata.c#L348

↑ https://github.com/NullCGT/SpliceHack/blob/b3a1427a43fd6ecc6088129e72ac594a1d3e531f/src/mondata.c#L340

↑ https://github.com/NullCGT/SpliceHack/blob/Spl-R-1.1.0/src/uhitm.c#L844

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