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

Extreme-xerophile cutoff

Upper cutoff used for the extreme-xerophile class.

Minimum water activity

Required number input.

Xerophile cutoff

Upper cutoff used for the xerophile class.

Xerotolerant cutoff

Upper cutoff used for the xerotolerant class.

Classify an observed minimum growth water activity with explicitly supplied laboratory or reference cutoffs; water-activity terminology is not governed by one universal set of numerical boundaries. 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]

Water activity class

The resulting water activity class returned as a string.

• 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.

• pH Preference Classifier

  Classify an observed optimum growth pH using caller-supplied boundaries; ecological pH preference labels do not have universal numeric cutoffs.

• Amatoxin Cap Assay

  Classify a reported amatoxin assay result as a potential lethal-toxin risk. Non-detection does not establish that a mushroom is edible or free of other toxins, and this tool does not replace laboratory or poison-control interpretation.

• NaCl Limit Lookup

  Classify a maximum growth-supporting NaCl concentration using caller-supplied boundaries appropriate to the organism, medium, and incubation protocol.