Apogromia De Saedeleer, 1934

Diagnosis: Shell hyaline, small, flask-shaped, with single terminal aperture, with or without a distinct neck; outline circular, sometimes irregular or angular. No septum. Shell composed of an organic material without any embedded xenosomes; color usually yellow-brown till dark-brown. Cytoplasm with symmetrical bundle of granulopodia (peduncle or “Pseudopodienstiel”), very thin, suppressed to the substrate and able to branch and anastomose, thus forming a network or reticulum. Nucleus relatively large, globular with a central nucleolus. One contractile vacuole.

Type species: Apogromia mucicola (Archer, 1877) De Saedeleer, 1934

Habitat: freshwater and marine; shallow, ironrich water, Spagnum.

Remarks: the main difference between Microgromia and Apogromia is the presence of a septum in the first one. De Saedeleer describes three species, but I’m unable to distinguish between A. flandriensis and A. lemercieri. The distinction is only based on the visibility of the pseudopodia, which in my opinion isn’t very useful as a diagnostic character.