Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Learn more about Southern Water-milfoil from the Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Saxifragales
Manual of the Southeastern Flora (Small, 1933)
Southern Water-milfoil, Variable-leaf Water-milfoil
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Bruce A. Sorrie bas_m_heterophyllum5
May Moore County NC
Flowers/fruits (subtended by bracts) in erect spikes emersed from water, per Weakley's Flora.