Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Large-leaved Grass-of-parnassus
Parnassia grandifolia
Family: Saxifragaceae

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

Global Rank: G3
State Rank: S1

Wet calcareous soil in the mountains (Gleason & Cronquist 1991); herbaceous seepage areas.

Species Description:
Perennial herb.

Flowering Period: Mid August to late October.

Additional Information at NatureServe

Diagnostic Characteristics:
Leaves of plants in this genus are long-petiolate in a basal rosette and are palmately veined. The blades of this species are wider than long, and generally kidney-shaped. They occur in springs and bogs.

The habitat for this species is especially sensitive to changes in hydrology and not likely to withstand much alteration. Grazing or browsing pressure, vegetation removal, hydrologic changes (i.e. stream alterations road construction) would be detrimental.

Global Range:
Occurs in scattered locations from Virginia and West Virginia, west to Missouri, and south to eastern Texas. It is found in Florida in two disjunct areas (considered a relict). It is found in Arkansas (AKNHP, 1993).

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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