Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Broadleaf Water-milfoil
Myriophyllum heterophyllum
Family: Haloragaceae

Protection Status:
State Status:  S
USFWS Status: {null}

Global Rank: G5
State Rank: S3?

Ponds, ditches and sluggish streams.

Species Description:
Perennial aquatic herb.

Flowering Period: Early April to late July.

Additional Information at NatureServe

Diagnostic Characteristics:
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.

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:

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Data last updated: Wednesday, May 28, 2014
Kentucky State Nature Preserves Commission
801 Teton Trail
Frankfort,KY 40601
Phone: (502) 573-2886
Fax: (502) 573-2355
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