Mallomonas schwemmlei Glenk emend. Glenk & Fott

(Fig. 3K, L)

DISTRIBUTION. — Restricted to northern temperate regions (Kristiansen & Preisig 2007; Řezáčová & Neustupa 2007). Our record of M. schwemmlei represents the eastern boundary of its distribution, based on current information.

REMARKS

This species has three types of scales with a fingerprint-like rib pattern which consists of semicircular ribs and straight or irregularly-curved parallel ribs (Kristiansen 2002).

Earlier authors synonymized M. schwemmlei with M. coronifera Matv. (Fott & Ettl 1959) but Glenk & Fott (1971) re-evaluated earlier observations and revealed that both species are independent. Unfortunately, the scales ultrastructure of M. coronifera is still unknown and it has been considered as a dubious species (Kristiansen & Preisig 2007).