Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Silphium laciniatum
Family: Asteraceae

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

Global Rank: G5
State Rank: S2

Prairies and barrens.

Species Description:
Perennial herb

Flowering Period: Early July to mid September.
Fruiting Period: Early August to mid October.

Additional Information at NatureServe

Diagnostic Characteristics:
This large perennial has leaves well distributed along the stem. The leaves are large (to 50 cm) and highly lobed (pinnatifid). The phyllaries (the leaves subtending the flower head) are acuminate.

Woody plant invasion may need to be controlled using periodic prescribed fire, mowing or other means to maintain the open character of the habitat for this species. Hand removal of trees in the vicinity of the species is necessary. Soil disturbance resulting from activities such as ATV trails, timber removal or any activity that results in increased erosion and weed invasion will be detrimental. Exotic pest plants are a threat to this species and should be removed.

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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