Table 4 Mycelial visual features and descriptions.

From: A Mycelium Dataset with Edge-Precise Annotation for Semantic Segmentation

Hyphal features

Description

Uniform density distribution

Biomass density remains even from center to edge.

Concentric density zonation

Alternating dense-sparse rings record periodic growth pulses.

Centripetal densification

Inner core compacts and darkens as mycelium growth.

Irregular edges

Edge shows lobes, waves, or serrations.

Peripheral densification

Thick, active growth band forms at outer rim.

Hyphal pigmentation

Pigment deposition produces yellow-to-dark brown coloring.

Heterogeneous density distribution

Patchy high- and low-density clusters across mycelium.

Wrinkling

Surface folds or ridges from uneven aerial-hypha shrinkage.

Rhizomorph

Rope-like cords carry nutrients and anchor mycelium.

Spiral stratification

Concentric bands follow outward helicoidal spiral.

Internal concavity

Central depression from autolysis and water loss.