Olms from different cave systems differ substantially in body measurements, color and some microscopic characters.

In terms of microscopic characters, spore sizes were not sufficiently different between them to be used as discriminating taxonomic characters.

They are usually structurally distinct from the basidia, and their features may be used as microscopic characters to help distinguish and differentiate similar fungi.

Distinguishing individual species of Clitocybe is generally prohibitively difficult to non-experts, requiring the analysis of microscopic characters.

The microscopic characters are typical of the genus Exidia.

He proposes using lasers to engrave microscopic characters on the trunks of saplings.

He published his findings in a treatise called On the microscopic character of mollities ossium.

Anatomic/morphologic differences with related species involve microscopic characters as setation or shape and distribution of scales.

Fleshy fruiting bodies with a stalk and microscopic characters separate boletes from polypores.

It is often difficult or impossible to distinguish between members of the P. cyanescens complex except by range without resorting to microscopic or molecular characters.