Use this mycology utility to record or consistently classify a stated fungal morphology, culture, ecology, assay, cultivation, or microscopy observation for later expert review.

Initial colony radius (mm)

Required number input.

Final colony radius (mm)

Required number input.

Days elapsed

Required integer input.

Calculate radial mycelial growth in millimetres per day from the change between initial and final colony radius over elapsed time. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Radial growth rate (mm/day)

The resulting radial growth rate returned as a number.

• Fungal identification and susceptibility interpretation depend on specimen quality, developmental stage, medium, temperature, microscopy, molecular evidence, validated breakpoints, and taxonomic context. Pattern-based output is not an edibility, toxicity, infection, or treatment determination.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Preserve images, specimen and culture metadata, method and reference standard, use multiple characters or molecular confirmation, and refer clinical or poisoning questions to qualified services.

• Zonation Day Counter

  Estimate elapsed growth time from colony zonation rings and an experimentally established time per ring; one ring does not inherently equal one day.

• Armillaria Annual Spread

  Estimate average annual radial spread of an Armillaria genet from measured radius extension over a whole-year observation interval.

• Rhizomorph Extension Rate

  Record the daily extension rate of a rhizomorph from measured extension over elapsed days.