Cicuta maculata

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Cicuta maculata
Cicuta maculata.jpg
Status TNC G5.svg
Secure  (NatureServe)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Apiales
Family: Apiaceae
Genus: Cicuta
Species:
C. maculata
Binomial name
Cicuta maculata
L.
Synonyms [2]

Cicuta bolanderi
Cicuta curtissii
Cicuta mexicana
Cicuta occidentalis

Contents

Cicuta maculata is a highly poisonous species of flowering plant in the carrot family known by several common names, including spotted water hemlock, spotted parsley, spotted cowbane, and the suicide root by the Iroquois. It is native to nearly all of North America, from northern Canada to southern Mexico.

Description

Cicuta maculata is a rhizomatous perennial herb producing a hollow erect stem that can reach a height of 1.8 meters (6 feet). [3] The long leaves are made up of several lance-shaped, pointed, serrated leaflets. Each shiny green leaflet is 2 to 10 centimeters (1 to 4 inches) long and the entire leaf may be up to 40 cm (16 in) long. The inflorescence of white flowers is similar in appearance to other species in the carrot family. It is a compound umbel with many clusters of flowers. The dry tan-brown fruit is a few millimeters long.

The plant prefers wet habitats, such as wet meadows, roadside ditches, pond margins, open marshes, and freshwater swamps. [4] [5] [6] Flowering is from May to September. [6]

The poisonous plant is occasionally mistaken for parsnips, due to its clusters of white tuberous roots.

Toxicity

The confusion with parsnips can be fatal as C. maculata is extremely poisonous. It is considered to be North America's most toxic native plant. [7] [8] [9]

Cicuta is fatal when swallowed, causing violent and painful convulsions. Though a number of people have died from water hemlock poisoning over the centuries, livestock have long been the worst affected (hence the name "cowbane"), with ingestion of the plant causing death in as little as 15 minutes. [10] [11]

The chief poison is cicutoxin, an unsaturated aliphatic alcohol that is most concentrated in the roots. Upon human consumption, nausea, vomiting, and tremors occur within 30–60 minutes, followed by severe cramps, projectile vomiting, and convulsions. Occasional long-term effects include retrograde amnesia. [12] Ingestion of water hemlock in any quantity can result in death or permanent damage to the central nervous system.

Conservation

While the species as a whole is not under threat of extinction according to the International Union for Conservation of Nature [1] and NatureServe, [13] the variety C. maculata var. victorinii (Victorin's water-hemlock) is a listed Species of Concern under Schedule 1 of the Canadian Species at Risk Act. [14] According to a 2022 Committee on the Status of Endangered Wildlife in Canada (COSEWIC) report, Victorin's water-hemlock, the sole variety of C. maculata that grows in parts of tidal marshes with brackish exposure and regular tidal inundation, [15] :7 will soon qualify for threatened status if threats are not addressed. [15] Victorin's water-hemlock is endemic to the St. Lawrence River estuary, which is in Canada. [15] :7

See also

Related Research Articles

<span class="mw-page-title-main">Apiaceae</span> Family of flowering plants

Apiaceae or Umbelliferae is a family of mostly aromatic flowering plants named after the type genus Apium and commonly known as the celery, carrot or parsley family, or simply as umbellifers. It is the 16th-largest family of flowering plants, with more than 3,800 species in about 446 genera, including such well-known and economically important plants as ajwain, angelica, anise, asafoetida, caraway, carrot, celery, chervil, coriander, cumin, dill, fennel, lovage, cow parsley, parsley, parsnip and sea holly, as well as silphium, a plant whose exact identity is unclear and which may be extinct.

<i>Daucus carota</i> Species of flowering plant

Daucus carota, whose common names include wild carrot, European wild carrot, bird's nest, bishop's lace, and Queen Anne's lace, is a flowering plant in the family Apiaceae. It is native to temperate regions of the Old World and was naturalized in the New World.

<span class="mw-page-title-main">Parsnip</span> Root vegetable in the flowering plant family Apiaceae

The parsnip is a root vegetable closely related to carrot and parsley, all belonging to the flowering plant family Apiaceae. It is a biennial plant usually grown as an annual. Its long taproot has cream-colored skin and flesh, and, left in the ground to mature, becomes sweeter in flavor after winter frosts. In its first growing season, the plant has a rosette of pinnate, mid-green leaves. If unharvested, it produces a flowering stem topped by an umbel of small yellow flowers in its second growing season, later producing pale brown, flat, winged seeds. By this time, the stem has become woody, and the tap root inedible. Precautions should be taken when handling the stems and foliage, as parsnip sap can cause a skin rash or even blindness if exposed to sunlight after handling.

<i>Aegopodium podagraria</i> Species of flowering plant in the celery family Apiaceae

Aegopodium podagraria, commonly called ground elder, is a species of flowering plant in the carrot family Apiaceae that grows in shady places. The name "ground elder" comes from the superficial similarity of its leaves and flowers to those of elder (Sambucus), which is not closely related. Other common names include herb gerard, bishop's weed, goutweed, gout wort, snow-in-the-mountain, English masterwort and wild masterwort. It is the type species of the genus Aegopodium. It is native to Europe and Asia, but has been introduced around the world as an ornamental plant, where it occasionally poses an ecological threat as an invasive exotic plant.

<i>Heracleum maximum</i> Species of flowering plant

Heracleum maximum, commonly known as cow parsnip, is the only member of the genus Heracleum native to North America. It is also known as American cow-parsnip, Satan celery, Indian celery, Indian rhubarb, poison turnip or pushki.

<i>Conium</i> Genus of flowering plants in the celery family Apiaceae

Conium is a genus of flowering plants in the family Apiaceae. As of December 2020, Plants of the World Online accepts six species.

<i>Cicuta virosa</i> Species of plant

Cicuta virosa, the cowbane or northern water hemlock, is a poisonous species of Cicuta, native to northern and central Europe, northern Asia and northwestern North America.

<i>Cicuta douglasii</i> Species of flowering plant

Cicuta douglasii, the western water hemlock, is a very poisonous perennial plant in the family Apiaceae.

<span class="mw-page-title-main">Cicutoxin</span> Chemical compound

Cicutoxin is a naturally-occurring poisonous chemical compound produced by several plants from the family Apiaceae including water hemlock (Cicuta species) and water dropwort (Oenanthe crocata). The compound contains polyene, polyyne, and alcohol functional groups and is a structural isomer of oenanthotoxin, also found in water dropwort. Both of these belong to the C17-polyacetylenes chemical class.

<i>Cicuta</i> Genus of plants

Cicuta, commonly known as water hemlock, is a genus of four species of highly poisonous plants in the family Apiaceae. They are perennial herbaceous plants which grow up to 2.5 meters (8 ft) tall, having distinctive small green or white flowers arranged in an umbrella shape (umbel). Plants in this genus may also be referred to as cowbane or poison parsnip. Cicuta is native to temperate regions of the Northern Hemisphere, mainly North America and Europe, typically growing in wet meadows, along streambanks and other wet and marshy areas. These plants bear a close resemblance to other members in the family Apiaceae and may be confused with a number of edible or poisonous plants. The common name hemlock may also be confused with poison hemlock, or with the Hemlock tree.

<i>Ligusticum porteri</i> Species of flowering plant

Ligusticum porteri, also known as oshá, wild parsnip, Porter’s Lovage or wild celery, is a perennial herb found in parts of the Rocky Mountains and northern New Mexico, especially in the southwestern United States.

<span class="mw-page-title-main">Oenanthotoxin</span> Chemical compound

Oenanthotoxin is a toxin extracted from hemlock water-dropwort and other plants of the genus Oenanthe. It is a central nervous system poison, and acts as a noncompetitive antagonist of the neurotransmitter gamma-aminobutyric acid. A case has been made for the presence of this toxin in local Oenanthe species playing a causative role in euthanasia in ancient Sardinia. It was crystallized in 1949 by Clarke and co-workers. It is structurally closely related to the toxins cicutoxin and carotatoxin. Oenanthotoxin is a C17 polyacetylene isomer of cicutoxin.

<i>Sium suave</i> Species of flowering plant

Sium suave, the water parsnip or hemlock waterparsnip, is a perennial wildflower in the family Apiaceae. It is native to many areas of both Asia and North America. The common name water parsnip is due to its similarity to parsnip and its wetland habitat. The alternate common name hemlock waterparsnip is due to its similarity to the highly poisonous spotted water hemlock.

<i>Conium maculatum</i> Poisonous herbaceous plant in the carrot family

Conium maculatum, colloquially known as hemlock, poison hemlock or wild hemlock, is a highly poisonous flowering plant in the carrot family Apiaceae, native to Europe and North Africa. It is herbaceous without woody parts and has a biennial lifecycle. A hardy plant capable of living in a variety of environments, hemlock is widely naturalised in locations outside its native range, such as parts of Australia, West Asia, and North and South America, to which it has been introduced. It is capable of spreading and thereby becoming an invasive weed.

<i>Cicuta bulbifera</i> Species of plant

Cicuta bulbifera, commonly known as the bulb-bearing water-hemlock, is a plant native to North America and one of four species in the poisonous genus Cicuta. Tiny bulbils form in the leaf joints in the upper part of the plant, giving the plant its scientific and common names. Cicuta bulbifera can be distinguished from Cicuta douglasii by its narrow leaflet segments and its bulbil-bearing upper leaf axils.

<i>Oenanthe crocata</i> Species of flowering plant

Oenanthe crocata, hemlock water-dropwort is a flowering plant in the carrot family, native to Europe, North Africa and western Asia. It grows in damp grassland and wet woodland, often along river and stream banks. All parts of the plant are extremely toxic and it has been known to cause human and livestock poisoning.

<i>Oxypolis rigidior</i> Species of flowering plant

Oxypolis rigidior, known as cowbane, common water dropwort, stiff cowbane, or pig-potato, is a species of flowering plant in the carrot family native to eastern North America. It is a perennial wildflower found in wet habitats. Oxypolis rigidior is poisonous to mammals.

References

  1. 1 2 Maiz-Tome, L. (2016). "Cicuta maculata". IUCN Red List of Threatened Species . 2016: e.T64310721A67729176. doi: 10.2305/IUCN.UK.2016-1.RLTS.T64310721A67729176.en . Retrieved 7 February 2024.
  2. "Cicuta maculata". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 12 January 2018.
  3. United States Department of the Army (2009). The Complete Guide to Edible Wild Plants. New York: Skyhorse Publishing. p. 143. ISBN   978-1-60239-692-0. OCLC   277203364.
  4. "Cicuta maculata". iowaplants.com.
  5. "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org.
  6. 1 2 "Cicuta maculata page". www.missouriplants.com.
  7. Schep LJ, Slaughter RJ, Becket G, Beasley DM (April 2009). "Poisoning due to water hemlock". Clin Toxicol. 47 (4): 270–8. doi:10.1080/15563650902904332. PMID   19514873. S2CID   21855822.
  8. "ARS". usda.gov.
  9. 'Do not eat, touch, or even inhale the air around the Machineel Tree' (Atlas Obscura) Accessed 14 August 2019
  10. "Poison Plants (California Veterinary Association)". Archived from the original on 12 September 2007. Retrieved 10 July 2008.
  11. USDA Plants Profile
  12. Costanza, David J.; Hoversten, Vincent W. (1973). "Accidental Ingestion of Water Hemlock". Calif Med. 119 (2): 78–82. PMC   1455113 . PMID   4726956.
  13. NatureServe (2 February 2024). "Cicuta maculata". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 7 February 2024.
  14. "Victorin's Water-hemlock (Cicuta maculata var. victorinii)". Species at risk public registry. Government of Canada. 13 June 2023. Retrieved 7 February 2024.
  15. 1 2 3 COSEWIC (2022). COSEWIC assessment and status report on the Victorin’s Water-hemlock Cicuta maculata var. victorinii in Canada (Report). Ottawa: Committee on the Status of Endangered Wildlife in Canada. Retrieved 7 February 2024.