Monomitic

Monomitic is a mycological term describing a hyphal system in which the fungal tissue contains only one type of hypha: generative hyphae. These hyphae are typically thin-walled, septate, capable of branching, and often bear reproductive structures such as basidia. By contrast, dimitic systems include generative hyphae plus skeletal or binding hyphae, and trimitic systems include all three types. The presence or absence of these hyphal types affects texture and wood-decay behavior; monomitic fungi tend to form softer, more pliable fruiting bodies because they lack the rigid skeletal or binding hyphae.

Taxonomic and ecological significance: The hyphal system is a diagnostic character in identifying wood-decaying basidiomycetes and related fungi. Monomitic species occur across several genera within Agaricomycetes, particularly among species that decompose softer wood or form fleshy fruiting bodies. The hyphal arrangement can influence decay patterns and the mechanical properties of the fruiting body or substrate.

Identification and study: Determining whether a fungus is monomitic typically requires microscopic examination of hyphae from the fruiting body or culture, noting hyphal type, septation, and the presence or absence of skeletal and binding hyphae, as well as features such as clamp connections when present.

See also: dimitic, trimitic, hypha.