Family: Apiaceae
wild parsnip
Christopher Noll
Robert Bierman
University of Wisconsin - Madison (WIS-VP)
Etymology: Pastinaca: one source says from Latin pastino, " to prepare the ground for planting," while another says from Latin pastus, "food." This was the ancient name of the parsnip and may give a clue as to the origin of the Italian word pasta
Plants: erect, biennial, 1'-5' tall forb, first year plants a basal rosette of leaves; stems flat and ridged; long taproot; entire plant causes photo-dermatitis, avoid all contact with skin
Leaves: pinnately-divided into 5-15 lobed or cut, 2"-4" long, stalkless, broad, distinct and separated leaflets; lower leaves on long stalks, upper on shorter, sheathing stalks
Flowers: yellow, 5-parted; inflorescence a 4"-8" wide, flat, compound umbel, with 15-25 umbellets on irregular stalks; the side umbels, in time, become taller than the first-blooming, central umbel; blooms June-July
Fruits: dry, flattened in the back, smooth, side ribs slightly winged, splitting into 2 seeds- fruit:
seed:
Habitat: sun; disturbed sites, old fields, roadsides, pastures
Hazardous: Careful, this plant is hazardous!
Invasiveness: Restricted Invasive - Eradicate!
Conservation Status: Introduced - naturalized; ecologically invasive
Plants: erect, biennial, 1'-5' tall forb, first year plants a basal rosette of leaves; stems flat and ridged; long taproot; entire plant causes photo-dermatitis, avoid all contact with skin
Leaves: pinnately-divided into 5-15 lobed or cut, 2"-4" long, stalkless, broad, distinct and separated leaflets; lower leaves on long stalks, upper on shorter, sheathing stalks
Flowers: yellow, 5-parted; inflorescence a 4"-8" wide, flat, compound umbel, with 15-25 umbellets on irregular stalks; the side umbels, in time, become taller than the first-blooming, central umbel; blooms June-July
Fruits: dry, flattened in the back, smooth, side ribs slightly winged, splitting into 2 seeds- fruit:
seed:Habitat: sun; disturbed sites, old fields, roadsides, pastures
Hazardous: Careful, this plant is hazardous!
Invasiveness: Restricted Invasive - Eradicate!
Conservation Status: Introduced - naturalized; ecologically invasive
Wisconsin Natural Resources Magazine: Information and Photos WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin invasive species including decription, habitats, control methods Wisconsin Natural Resources Magazine: Information and Photos Wisconsin Natural Resources Magazine: Information and Photos Atlas of the Wisconsin Prairie and Savanna Flora: by T.S. Cochrane & H.H. Iltis: habitat, distribution infomation / flowering and fruiting times USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Invasive Plants: Photos, descriptions, information USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"
Robert Bierman
Kitty Kohout
Merel R. Black
Matthew L. Wagner
Matthew L. Wagner
Christopher Noll
Aaron_Carlson
Aaron_Carlson
John M. Schoeneker
Aaron_Carlson
