Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Pontederia cordata
Family: Pontederiaceae

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

Global Rank: G5
State Rank: S1S2

Marshes and shallow water, sloughs, open swamps, and oxbow lakes.

Species Description:
Perennial herb.

Flowering Period: Early June to late September.

Additional Information at NatureServe

Diagnostic Characteristics:
This plant of aquatic and wetland habitats has large (to 18 cm), firm, usually broadly cordate (sometimes narrower) leaves that are long-petioled at the base of the plant and on the lower stem. The long flowering stalk has a spathe with an expanded blade and another with a bladeless sheath and the spike (actually a contracted panicle) of lavender/blue flowers that is 5-15 cm.

Changes in moisture/hydrologic conditions of the habitat for this species would likely be detrimental. Changes could result from extensive tree removal, stream/wetland alteration, 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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