⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-35160486, with some changes.
 Limnobium polare 
	is a synonym
 of Hygrohypnella polaris
	Limnobium polare 
	is a synonym
 of Hygrohypnella polaris 
This name is a synonym of Hygrohypnella polaris .
The record derives from Tropicos which reports it as a synonym (record 35160486) with original publication details: Meddel. Grønland 3: 333 333 1887.