Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Hairy Hawkweed
Hieracium longipilum
Family: Asteraceae

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

Global Rank: G4G5
State Rank: S2

Dry prairies, open woods and fields, particularly on sandy soil (Gleason & Cronquist 1991).

Species Description:
Perennial herb.

Flowering Period: Early July to late October.

Additional Information at NatureServe

Diagnostic Characteristics:
The most notable character for this species is the long hairs (trichomes 1-2 cm) that cover the stem and leaves. This and the number of ray flowers (40-90 per head) distinguish H.longipilum from the common H. gronovi. The stem is leafy and the inflorescence is elongate-cylindric with bracts minute. The achenes are narrowed to the summit. The heads have only one kind of flower, ray flowers, the pappus is yellow or brown and the involucral bracts (the bracts at the base of the flower head) are in several series.

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 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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