KNP Rare Plants Database


 
KY Office of Kentucky Nature Preserves




Broadleaf Water-milfoil
Myriophyllum heterophyllum
Family: Haloragaceae

Protection Status:
State Status:  S
USFWS Status: 

Global Rank: G5
State Rank: S3?

   

Photo by B. Eugene Wofford @ TENN
Habitat:
Ponds, ditches and sluggish streams.

Species Description:
Perennial aquatic herb.

Phenology:
Flowering Period: Early April to late July.

Additional Information at NatureServe

Diagnostic Characteristics:
Myriophyllum heterophyllum is an aquatic plant that is mostly submerged. The emergent leaves are 2 cm or less, sessile or nearly so. The upper flower are staminate and these have bracts that are serrate (toothy) and longer than the flowers.

Management:
Avoid changes in moisture/hydrologic conditions at the site. Changes could result from overstory removal, stream/wetland alteration or vegetation removal that would result in increased erosion.

Global Range:


Known Kentucky Occurrences:
Species occurrence map

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Data Last Updated: November 2018
Office of Kentucky Nature Preserves
300 Sower Blvd
Frankfort,KY 40601
Phone: (502) 573-2886
Email:
naturepreserves@ky.gov
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