A beautifull small violaceous-blue species, which typically grows in Phlegmacium rich beech woods on chalk.

It might be confused with C. coerulescens or C. terpsichores, but C. sodagnitus is smaller than both, and has a distinctly pink-red alcaline reaction on the cap and bulb. The fine droplike spots on the cap is another good character for this species.

Pale specimens might look like C. cf. rickenianus but this species reacts weakly with bases.

It discolous with age and might the remind of other species in section Calochroi.