BugwoodWiki Article

spotted waterhemlock
Cicuta maculata L.

Overview

Appearance
Cicuta maculata is usually a large, highly branched plant growing to 8 ft. (2.4 m) tall in wet meadows, swamps, and shoreline thickets. However, they can be medium-sized, scraggly plants growing in floating mats of vegetation.
Foliage
The leaves are large, often growing to a foot or more long and 2 ft. (0.6 m) wide. They can be bipinnately or tripinnately compound and are alternately arranged on the stem. The leaflets are lance-shaped and have coarse teeth around their margins. The stem is fleshy and hollow and usually has purple stripes.
Flowers
The flowers are in large, dome-shaped umbels. The flowers are tiny, white, and have 5 petals. The flower umbels are in long stalks that grow from leaf axels at the tips of the stems.
Fruit
The fruit has the appearance as small, dry and spherical that is 0.25 in. (0.64 cm) long. It ripens in July-September.
Ecological Threat
Many species of aquatic plants have large clusters of white flowers. Some of these plants are considered edible. However, some, such as Cicuta maculata, are extremely toxic to humans and animals, and can cause death.

Selected Images


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5423919

spotted waterhemlock
Cicuta maculata
Plant(s)
Karan A. Rawlins
1459210
1459210

spotted waterhemlock
Cicuta maculata
Flower(s)
Steve Dewey
1459213
1459213

spotted waterhemlock
Cicuta maculata
Foliage
Steve Dewey
5423940
5423940

spotted waterhemlock
Cicuta maculata
Flower(s)
Karan A. Rawlins
1459211
1459211

spotted waterhemlock
Cicuta maculata
Flower(s)
Steve Dewey
1459212
1459212

spotted waterhemlock
Cicuta maculata
Plant(s)
Steve Dewey
1391475
1391475

spotted waterhemlock
Cicuta maculata
Flower(s)
John D. Byrd
1391476
1391476

spotted waterhemlock
Cicuta maculata
Foliage
John D. Byrd
5439932
5439932

common elderberry
Sambucus nigra ssp. canadensis
Foliage
Rebekah D. Wallace
5439931
5439931

common elderberry
Sambucus nigra ssp. canadensis
Foliage
Rebekah D. Wallace
5423938
5423938

spotted waterhemlock
Cicuta maculata
Stem(s)
Karan A. Rawlins

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Invasive Listing Sources

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Rosidae
Order: Apiales
Family: Apiaceae
Genus: Cicuta

Other System Links

Plants: CIMA2
Bayer: CIUMC
GRIN: 10545
ITIS: 29456
NPDN Pest: PFFAKBB
NPDN Host: 36346

Synonyms and Other Names

Other Common Names:
spotted water hemlock, common water hemlock, poison parsnip, spotted cowbane, spotted parsley, spotted water-hemlock, spotted waterhemlock, water hemlock

Categories

Category: Forbs/Herbs