Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

American Frog's-bit
Limnobium spongia
Family: Hydrocharitaceae

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

Global Rank: G4
State Rank: S2S3

Ponds, bayous, stagnant water.

Species Description:
Perennial herb.

Flowering Period: Early June to late September.

Additional Information at NatureServe

Diagnostic Characteristics:
This is a floating aquatic plant that has a spongy area at the base of the floating leaves. These are ovate/orbicular in shape and have a petiole. All leaves are basal. The plants do not root.

Changes in hydrology or degradation of water quality in the habitat for this species could cause decline. Changes could result from overstory removal, stream/wetland alteration or vegetation removal that would result in increased erosion or soil deposition.

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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