Genus: Body in a perforated organic causule with filopodium.
Simliar to Clathrulina.
Hedriocystis reticulata: Cell body spherical, ~12 μm in diam.; clear to yellow capsule with many minute pores, each in a polygonal facet with raised edges; stalk ~3 x as long as diam. of capsule; ectoplasm granular, not distinct from endoplasm; nucleus spherical, ~6 μm in diam. located at the center of the cell body; axopods originate centrally, extend through capsular pores, 1 per pore; a single contractile vacuole; freshwater (Illustrated Guide, 1985).