Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

St. Peter's-wort
Hypericum crux-andreae
Family: Clusiaceae

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

Global Rank: G5
State Rank: S2S3

Moist or dry sandy woods, meadows and barrens. Also pine flatwoods (Weakley 1998).

Species Description:

Flowering Period: Early July to late August.

Additional Information at NatureServe

Diagnostic Characteristics:
This species has 4 petals and 4 sepals and the plants are less than 0.5 m tall. Leaves are elliptic-oblong, 8-20 mm wide and clasp the stem. The capsules are 1-locular.

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. 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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