Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Appalachian Rosinweed
Silphium wasiotense
Family: Asteraceae

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

Global Rank: G3
State Rank: S3

Dry-mesic forest, usually somewhat open due to disturbance.

Species Description:
Perennial herb.

Flowering Period: Early July to late September.

Additional Information at NatureServe

Diagnostic Characteristics:
The leaves of Silphium wasiotense are entire, not lobed, pubescent, and with bases cordate or truncate. They are distributed along the stem and mostly opposite.

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. Soil disturbance resulting from activities such as ATV trails, or any activity that results in increased erosion and weed invasion could be detrimental. Timber thinning, depending on the method and implementation, could be helpful in maintaining light levels for this species. Exotic pest plants are a threat to this species and should be removed where practical.

Global Range:
This species is restricted to the southern Cumberland Plateau in Kentucky with one location in Tennessee. The counties, in Kentucky, where it occurs indicate that it is restricted (pers. comm. D. White, KY Botanist).

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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