M3E1G2A1S1P3O1R1A1N1G2I1U1M3
22 points
MEGASPORANGIUM is validvalid
[n MEGASPORANGIA]
the sporangium in heterosporous plants where the megaspores develop [n MEGASPORANGIA]
[n MEGASPORANGIA]
the sporangium in heterosporous plants where the megaspores develop [n MEGASPORANGIA]