Perianth bristles 4–6, equaling to twice as long as achene, densely spinulose.

Phenology: Fruiting summer–fall.
Habitat: Freshwater, sandy or muddy shores with relatively stable water levels, floating mats, bogs
Elevation: 0–400 m

Distribution

• Generated Map
• Legacy Map

Ont., Que., Conn., Del., Ill., Ind., Maine, Md., Mass., Mich., Minn., N.H., N.Y., N.C., Ohio, Wis.

Discussion

Selected References

None.

Lower Taxa

None.