Property:Keel variability A Text property defining a single value. Structure: keel Character: variability A subproperty of perianth A Part of perianth Types of keel variability None. Parts of keel variability None. Usage2previous 502050100250500next 50FilterShowing 2 pages using this property.PPotamogeton foliosus subsp. fibrillosus +equal +Potamogeton foliosus subsp. foliosus +equal +