Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Waterplantain Spearwort
Ranunculus ambigens
Family: Ranunculaceae

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

Global Rank: G4
State Rank: S3

Sloughs, swamps and pond margins.

Species Description:
Perennial herb.

Flowering Period: Early April to late June.

Additional Information at NatureServe

Diagnostic Characteristics:
This wetland yellow-flowered buttercup has hollow stems and may be erect or reclined and rooting the nodes. It has leaves entire (without lobes) and serrate. The upper leaves may be linear/lanceolate and they are 5-16 cm long and 1-3.5 cm wide. The petiole is winged and sheathing the stem.

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. Exotic pest plants are a threat to this species and should be removed. Avoid creating access to the site through trail or road construction.

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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