Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Grassleaf Mud-plantain
Heteranthera dubia
Family: Pontederiaceae

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

Global Rank: G5
State Rank: S3

Quiet waters of ponds and lakes, or streams.

Species Description:
Perennial aquatic herb.

Flowering Period: Mid June to late September.
Fruiting Period: Mid July to mid October.

Additional Information at NatureServe

Diagnostic Characteristics:
Yellow-flowered aquatic species that is usually submersed. Leaves are linear and lacking a petiole. The flowers are usually at water surface. Stamens are equal in length.

Tree canopy removal or stream/wetland alteration could result in hydrologic changes that would be detrimental to this plant. Soil disturbance caused by trails/roads or any activity that results in increased erosion and weed invasion would be detrimental. Exotic pest plants are a threat to this species.

Global Range:
Que. to WA, south to NC, AK, NM, MT, ID, and OR. Sparse.

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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