Conium maculatum

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Scientific Name Conium maculatum USDA PLANTS Symbol
COMA2
Common Name Poison-hemlock ITIS Taxonomic Serial No.
29473
Family Apiaceae (Parsley) SEINet Reference
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Description Habitat: Creek and river bottoms, waste places, weedy areas, and woodland borders.
Plant: Erect, smooth biennial 1-1/2 to 8 feet tall, branchings stems with purple-red spots.
Leaves: Broad, three-times pinnately-divided leaves 3 to 12 inches long; ultimate lobes pinnately-incised.
Inflorescence: Compound umble 2 to 6 inches across with 8 to 16 umbellets; each umbellet with 12 to 25 small white flowers, each about 1/8-inch across with 5 petals and 5 protruding white stamens.
Bloom Period: March to June.
References: Illinois Wildflowers and "Wildflowers of the Texas Hill Country" by Marshall Enquist.
Texas Status
Introduced
INVASIVE
POISONOUS

© Tom Lebsack 2019