Etymology: Conium: derived from ancient Greek name coneion for hemlock
Plants: erect, biennial, up to 8' tall forb; stems green with purple spots, freely branched, and hollow; all parts deadly poisonous
Leaves: not clasping the stem, 8"-16" broadly-triangular to ovate in outline, 3-4 times pinnately-divided, toothed
Flowers: white, 5-parted; inflorescence of many 2"-3 1/2" mostly terminal umbels often with 2-4 together from the top stem node, with age the side umbels overtop the central one; blooms June-Aug.
Fruits: dry, splitting into 2 seeds, - fruit: seed:
Habitat: disturbed sites
Hazardous: Careful, this plant is hazardous!
Invasiveness: Prohibited/Restricted Invasive - Eradicate!
Conservation Status: Introduced - adventive; potentially invasive
Floristic Rating: Wetland Indicator = FACW WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin invasive species including decription, habitats, control methods Invasive And Exotic Species of North America: Descriptions, management issues, warnings, photos, etc. USDA Plants Database: Federal Distribution and detailed information including photos 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"