Hyphae · mycelium · digestion · symbiosis · reproduction · ecology

Mycology

Mycology studies fungi as cellular, biochemical, reproductive, and ecological systems. Follow hyphae into mycelial networks, extracellular digestion, symbioses, decomposition, disease, reproduction, evolution, and the methods used to study organisms whose largest structures are often hidden in their substrate.

Hidden body laboratory

Start below the mushroom.

Fungal form makes more sense when the visible reproductive structure is treated as one temporary part of a larger life cycle. The first instrument focuses on mycelial geometry, not species identification.

Mycelium architecture model

A fungus can explore substrate with a branching body that is mostly hidden from view.

Compare three toy network geometries against two resource maps. The model describes geometry only. It does not predict growth rate, nutrient uptake, fitness, species behavior, or which architecture a real fungus would choose.

Selected architectureMixed architecture

Intermediate branch length and branching density create a mixed geometry.

Network architecture
Resource map
ABCD
geometry only · not a biological forecast
Modeled hyphal length
198

arbitrary geometry units

Terminal tips
16

tips at final recursion depth

Patches reached
0 / 4

geometric contact only

Fungal body plan

A branching body connects microscopic growth with macroscopic ecology.

These terms describe recurring structures, not a single universal fungal anatomy. Yeasts, molds, mushrooms, chytrids, rusts, smuts, and many other fungi organize growth and reproduction differently.

Hypha

A tubular fungal filament that commonly extends by tip growth. Septa, nuclei, cell organization, and wall structure vary across fungal groups.

Mycelium

A network of hyphae occupying a substrate or host-associated environment. Network architecture can change with species, resources, damage, neighbors, and conditions.

Fruiting structure

Some fungi build macroscopic reproductive structures. A mushroom is one possible form, not the defining body plan of all fungi and not usually the whole organism.

Spore

A reproductive or dispersal cell. Fungal life cycles and spore types are diverse, and dispersal may involve air, water, animals, growth through substrate, or other routes.

Ecological relationships

Fungal nutrition happens through relationships with surroundings.

01Decomposition & saprotrophyHow can a fungus obtain resources from material outside its body?

Many fungi secrete enzymes into their surroundings and absorb smaller products. This extracellular digestion helps fungi transform organic matter and participate in nutrient cycling.

02SymbiosesWhat changes when fungal and partner metabolism become linked?

Mycorrhizal, lichen-forming, endophytic, and other associations can exchange resources or alter access to environments. Outcomes depend on partners and context rather than being automatically beneficial to both sides.

03Parasitism & diseaseHow can fungal growth exploit or damage a living host?

Some fungi are pathogens or parasites of plants, animals, or other organisms. Virulence, host defenses, environment, exposure, and host condition all influence outcomes.

Useful distinctions

The mushroom-shaped shortcut causes trouble fast.

01Fungus ≠ mushroomA mushroom is one kind of reproductive structure produced by some fungi. Much of a fungal organism may exist as microscopic hyphae in soil, wood, tissue, food, water, or other substrates.
02Edibility ≠ taxonomyClosely related fungi can differ chemically, and unrelated fungi can look similar. Appearance, color, habitat, or an app-generated label is not a safe basis for deciding whether a wild fungus is edible.
03Fungi ≠ plantsFungi are eukaryotes but do not photosynthesize like plants. They absorb resources after external digestion and have distinct cell walls, metabolism, development, and evolutionary history.
04Mycorrhiza ≠ guaranteed mutualismPlant-fungus exchange is context dependent. Carbon, nutrients, water, partner identity, soil conditions, and other organisms can change costs and benefits.
05Visible form ≠ whole networkFruiting bodies can appear and disappear while mycelium persists. Conversely, detecting fungal DNA or hyphae does not automatically tell us the size, activity, or ecological effect of a network.
06Morphology ≠ identityCap shape, spores, hyphae, colonies, and microscopic traits can inform identification, but modern fungal systematics often combines morphology with molecular and ecological evidence.
Mycological lenses
Cell biologywalls · membranes · nuclei · hyphal growth · septa · organelles
Biochemistryenzymes · extracellular digestion · metabolism · secondary compounds
Genetics & evolutiongenomes · mating systems · recombination · adaptation · phylogeny
Ecologydecomposition · symbiosis · competition · host interaction · nutrient cycling
Reproduction & dispersalsexual/asexual cycles · spores · fruiting · colonization
Methodsmicroscopy · culture · sequencing · chemistry · field sampling · experiments
Microbiologymicrobial growth, communities, methods, host interactionBotanyplants, roots, tissues, reproduction, ecologyChemistryenzymes, molecular structure, reactions, metabolites