*1 – Gap (intervallum) *2 – Central cavity *3 – Internal wall *4 – Pore (all the walls and septa have pores, not all are represented) *5 – Septum *6 – External wall *7 – Rizoid
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]