Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Cutleaf Meadow-parsnip
Thaspium pinnatifidum
Family: Apiaceae

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

Global Rank: G2G3
State Rank: S2S3

Dry mesic forests with limestone outcropping.

Species Description:
Perennial herb.

Flowering Period: Early May to late July.

Additional Information at NatureServe

Diagnostic Characteristics:
This species of Thaspium has highly divided leaf so that the leaflets are linear to oblong, the ultimate segments are less than 2 cm wide. The fruit are pubescent and 3-4 mm long. It is distinguished from Zizia, which they resemble, in having all flowers stalked, winged fruits and twice-pinnate or ternate pinnate leaves. Also the flowers are yellow but not bright yellow as is typical of Zizia.

Tree removal could be detrimental because of resulting changes in light and moisture conditions.

Global Range:
Kentucky south to Alabama and Georgia and also in western North Carolina (Kartesz 1999, Weakley 2000).

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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