Marsh gentian is a common name for several plants and may refer to:
*''
Gentiana affinis'', native to western North America
*''
Gentiana pneumonanthe
''Gentiana pneumonanthe'', the marsh gentian, is a species of the genus ''Gentiana
''Gentiana'' is a genus of flowering plants belonging to the gentian family (Gentianaceae), the tribe Gentianeae, and the monophyletic subtribe Gentianinae. ...
'', native to Europe
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