- Alisma gramineum — narrowleaf water-plantain
- Alisma subcordatum — broad-leaved water-plantain
- Alisma triviale — northern water-plantain
- Sagittaria brevirostra — short-beaked arrowhead
- Sagittaria calycina — longlobe arrowhead
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- Sagittaria cristata — crested arrowhead
- Sagittaria cuneata — Wapatum arrowhead
- Sagittaria graminea — grassleaf arrowhead
- Sagittaria latifolia — broadleaf arrowhead
- Sagittaria rigida — sessile-fruit arrowhead
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