Property:Epiphragm duration A Text property defining a single value. Structure: epiphragm Character: duration A phenology property A subproperty of sporangium A Part of sporangium Types of epiphragm duration None. Parts of epiphragm duration None. Usage6previous 5,0002050100250500next 5,000FilterShowing 6 pages using this property.PPogonatum +persistent +Pogonatum brachyphyllum +persistent +Pogonatum contortum +persistent +Pogonatum dentatum +persistent +Pogonatum pensilvanicum +persistent +Pogonatum urnigerum +persistent + Category: Phenology