Oenanthe | |
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Oenanthe aquatica | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Apiales |
Family: | Apiaceae |
Subfamily: | Apioideae |
Tribe: | Oenantheae |
Genus: | Oenanthe L. |
Synonyms [1] | |
List
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Oenanthe, known as water dropworts, oenanthes, [2] water parsleys, [3] and water celeries, [4] are a genus of plants in the family Apiaceae. Most of the species grow in damp ground, such as in marshes or in water.
Several of the species are extremely poisonous, the active poison being oenanthotoxin. The most notable of these is O. crocata, which lives in damp, marshy ground, and resembles celery with roots like a bunch of large white carrots. The leaves may be eaten safely by livestock, but the stems, and especially the carbohydrate-rich roots are much more poisonous. Animals familiar with eating the leaves may eat the roots when these are exposed during ditch clearance: one root is sufficient to kill a cow, and human fatalities are also known. It has been referred to as the most poisonous of all British plants, [5] and is considered particularly dangerous because of its similarity to several edible plants. [6]
The species O. javanica , commonly known as Chinese celery or Japanese parsley (seri; not to be confused with mitsuba or Japanese wild celery, Cryptotaenia japonica) is edible and grown in several countries of eastern Asia, as well as in Italy and India, where the spring growth is relished as a vegetable.
The name "Oenanthe" was used in ancient times to refer to several different plants, one of which was described by Pedanius Dioscorides [7] as having "white flowers... and many round heads." This was [mis]interpreted by medieval herbalists as dropwort or an umbellifer. [8] By the 18th century it was being widely used for water-dropworts. For example, in Hortus Cliffortianus hemlock water-dropwort was called Oenanthe foliis omnibus multifidis obtusis subaequalidus. Linnaeus formalised it as a generic name in Species Plantarum in 1753. [9]
Although the word is ultimately derived from the Ancient Greek οίνος, "wine" and άνθος, "flower", this has no meaning when applied to the water-dropworts other than as an arbitrary name for the genus. Subsequent speculation that it refers to the smell of the flowers [10] or intoxication caused by these plants [11] are probably mistaken.
The word "dropwort" refers to the tubers produced amongst the roots of certain species in the genus. [12]
As of 2020 [update] , Kew's Plants of the World Online accepts 33 species of Oenanthe: [1]
The following simplified key can be used to distinguish the six British water-dropworts, by eliminating them one by one. [13] To use the key, a few terms are needed: bracts are small, leaf-like appendages at the bottom of the primary umbels; rays are the branches of the primary umbels; petioles are leaf stalks. Refer to the notes on the species pages to confirm the identification.
1. Plants with bracts and ovate leaflets... O. crocata
2. Plants with bracts and narrow leaflets, rays thickening in fruit... O. pimpinelloides
3. Plants with bracts and narrow leaflets, rays not thickening in fruit... O. lachenalii
4. No bracts, upper leaves with ovate segments... O. aquatica
5. No bracts, upper leaves with narrow segments, petiole hollow... O. fistulosa
6. No bracts, upper leaves with narrow segments, petiole solid, rays thickening in fruit... O. silaifolia
7. No bracts, upper leaves with narrow segments, petiole solid, rays not thickening in fruit... O. lachenalii
Scientists at the University of Eastern Piedmont wrote that they had identified hemlock water dropwort (Oenanthe crocata) as the plant responsible for producing the sardonic grin. [14] [15] This plant is a possible candidate for the "sardonic herb", which was a neurotoxic plant referred to in ancient histories. It was purportedly used for the ritual killing of elderly people and criminals in Nuragic Sardinia, in which they were intoxicated with the herb and then dropped from a high rock or beaten to death. [11] [16]
Oenanthe aquatica fossil fruit halves have been recorded from Upper Miocene of Bulgaria, Pliocene of Thuringia and the Pliocene and Pleistocene of Poland. [17]
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 may be extinct.
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.
Risus sardonicus or rictus grin is a highly characteristic, abnormal, sustained spasm of the facial muscles that appears to produce grinning. It may be caused by tetanus, strychnine poisoning, or Wilson's disease, and has been reported after execution by hanging.
The North Somerset Levels is a coastal plain, an expanse of low-lying flat ground, which occupies an area between Weston-super-Mare and Bristol in North Somerset, England. The River Banwell, River Kenn, River Yeo and Land Yeo are the three principal rivers draining the area.
Portencross is a hamlet near Farland Head in North Ayrshire, Scotland. Situated about three kilometres west of Seamill and about two kilometres south of Hunterston B nuclear power station, it is noted for Portencross Castle.
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.
To be sardonic is to be disdainfully or cynically humorous, or scornfully mocking. A form of wit or humour, being sardonic often involves expressing an uncomfortable truth in a clever and not necessarily malicious way, often with a degree of skepticism.
Falling is execution by throwing or dropping a person from a great height. It has been used since ancient times. People executed in this way die from injuries caused by hitting the ground at high speed.
Oenanthe pimpinelloides is a species of flowering plant in the family Apiaceae known by the common name corky-fruited water-dropwort. It is a plant of tall, lightly grazed or infrequently mown grassland and coastal meadows in Europe and neighbouring parts of Asia and North Africa.
Oenanthe javanica, commonly Java waterdropwort, water celery, water dropwort, Chinese celery, Indian pennywort, minari and Japanese parsley, is a plant of the genus Oenanthe originating from East Asia. It has a widespread native distribution in temperate Asia and tropical Asia, and is also native to Queensland, Australia.
Railway Stell West is a Site of Special Scientific Interest in the Sedgefield district of County Durham, England. The site consists of a length of ditch alongside the East Coast Main Line railway, 3 km east of the town of Newton Aycliffe.
Veronica anagallis-aquatica is a species of flowering plant in the family Plantaginaceae known by the common names water speedwell, blue water-speedwell,brook pimpernel.
Epermenia chaerophyllella, also known as the garden lance-wing, is a moth of the family Epermeniidae first described by Johann August Ephraim Goeze in 1783. It is found in all of Europe and Asia Minor.
Dropwort is a common name for several plants and may refer to:
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.
Oenanthe aquatica, fine-leaved water-dropwort, is an aquatic flowering plant in the carrot family. It is widely distributed from the Atlantic coast of Europe to central Asia.
Oenanthe fistulosa, tubular water-dropwort, is a flowering plant in the carrot family, native to Europe, North Africa and western parts of Asia. It is an uncommon plant of wetlands, growing around pools and along ditches, mainly in areas of high conservation value.
Oenanthe fluviatilis, the river water-dropwort, is a flowering plant in the carrot family, Apiaceae, which is endemic to north-west Europe. It grows only in clear, unpolluted rivers and is declining throughout its range.
Oenanthe lachenalii, parsley water-dropwort, is a flowering plant in the carrot family, which is native to Europe and parts of North Africa. It is a declining plant of coastal wetlands.
Oenanthe silaifolia, narrow-leaved water-dropwort, is a flowering plant in the carrot family, which is native to Europe and adjacent parts of Asia and North Africa. It is an uncommon plant of water-meadows and wetlands.
Oenanthe crocata [...] is the most toxic plant in Britain to both humans and animals.