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Taraxacum officinale

Taraxacum officinale, the dandelion or common dandelion,[6] is a herbaceous perennial flowering plant in the daisy family Asteraceae (syn. Compositae). The common dandelion is well known for its yellow flower heads that turn into round balls of many silver-tufted fruits that disperse in the wind. These balls are called "clocks" in both British and American English.[7][8][9][10] The name "blowball" is also used.[11]

Taraxacum officinale
Common dandelion[1]

Secure (NatureServe)[3]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Taraxacum
Species:
T. officinale
Binomial name
Taraxacum officinale
Synonyms[4][5]
  • Crepis taraxacum (L.) Stokes
  • Leontodon taraxacum L.
  • Leontodon vulgare Lam.
  • Taraxacum campylodes G.E.Haglund
  • Taraxacum dens-leonis Desf.
  • Taraxacum mexicanum DC.
  • Taraxacum retroflexum Lindl.
  • Taraxacum subspathulatum A.J. Richards
  • Taraxacum sylvanicum R. Doll
  • Taraxacum taraxacum (L.) H. Karst.
  • Taraxacum tenejapense A.J. Richards
  • Taraxacum vulgare Schrank

The common dandelion grows in temperate regions of the world in areas with moist soils. They are very hardy plants, able to grow in a variety of environments, and are tolerant of crowding, extremes of temperature, and low moisture.[12] As a result of this hardiness, in addition to its ability to rapidly propagate itself, the dandelion has become established over a wide range via human activity, originally being native to Eurasia, but can also be found across the Americas, southern Africa, India, Australia and New Zealand as a result of incidental or deliberate introductions.

It is most often considered a weed, especially in lawns and along roadsides, but the leaves, flowers, and roots are sometimes used in herbal medicine and as food.

Description edit

 
Dandelion clocks showing among the grass

Taraxacum officinale grows from (generally unbranched) taproots and produces several hollow, leafless flower stems[13]: 470  that are typically 5–40 centimetres (2–15+34 inches) tall, but sometimes up to 70 cm (28 in) tall. The stems can be tinted purplish, they are upright or lax, and produce flower heads that are held as tall or taller than the foliage. The foliage may be upright-growing or horizontally spreading; the leaves have petioles that are either unwinged or narrowly winged. The stems can be glabrous or sparsely covered with short hairs. Plants have milky latex and the leaves are all basal; each flowering stem lacks bracts and has one single flower head. The yellow flower heads lack receptacle bracts and all the flowers, which are called florets, are ligulate and bisexual. In many lineages, fruits are mostly produced by apomixis,[14] notwithstanding the flowers are visited by many types of insects.[15]

The leaves are 5–45 cm (2–17+34 in) long and 1–10 cm (12–4 in) wide, and are oblanceolate, oblong, or obovate in shape, with the bases gradually narrowing to the petiole. The leaf margins are typically shallowly lobed to deeply lobed and often lacerate or toothed with sharp or dull teeth.[14]

The calyculi (the cuplike bracts that hold the florets) are composed of 12 to 18 segments: each segment is reflexed and sometimes glaucous. The lanceolate shaped bractlets are in two series, with the apices acuminate in shape. The 14–25 millimetres (12–1 in) wide involucres are green to dark green or brownish-green, with the tips dark gray or purplish. The florets number 40 to over 100 per head, having corollas that are yellow or orange-yellow in color.

The fruits, called cypselae,[16] range in color from olive-green or olive-brown to straw-colored to grayish, they are oblanceoloid in shape and 2–3 mm (11618 in) long with slender beaks. The fruits have 4 to 12 ribs that have sharp edges. The silky pappi, which form the parachutes, are white to silver-white in color and around 6 mm wide. Plants typically have 24 or 40 pairs of chromosomes, while some have 16 or 32 pairs.[17]

Chemistry edit

Taraxalisin
Identifiers
EC no.?
CAS no.217442-60-9

Taraxalisin is a serine proteinase found in the latex of dandelion roots.[18] Rudenskaya et al. (1998) found that taraxalisin hydrolyzes a chromogenic peptide substrate Glp-Ala-Ala-Leu-pNA optimally at pH 8.0.[19] Maximal activity of the proteinase in the roots is attained in April, at the beginning of plant development after the winter period.[19]

Taxonomy edit

 
 
Dandelion flower (left) and ripe fruits

Carl Linnaeus named the species Leontodon taraxacum in 1753. The current genus name Taraxacum derives possibly from the Arabic Tharakhchakon,[14] or from the Greek Tarraxos.[20] The specific name officinalis refers to its value as a medicinal herb, and is derived from the word opificina, later officina, meaning a workshop or pharmacy.[21]

The taxonomy of the genus Taraxacum is complicated by apomictic and polyploid lineages,[22][23] and the taxonomy and nomenclatural situation of T. officinale is not yet fully resolved.[17] The taxonomy of this genus has been complicated by the recognition of numerous species,[24] subspecies and microspecies. For example, Rothmaler's flora of Germany recognizes roughly 70 microspecies.[25]

T. officinale has a fossil record that goes back to glacial and interglacial times in Europe.[26]

North American dandelions edit

 
Saint-Prosper-de-Champlain, Quebec, Canada

The plants introduced to North America, originally as a food crop, are triploids that mainly reproduce by obligate gametophytic apomixis[17][27] Though sexual dandelion plants are known in North America, almost all are clones that produce genetically identical seeds through apomixis.[28] Some authorities recognize three subspecies of Taraxacum officinale, including:[29][30]

  • Taraxacum officinale subsp. ceratophorum (Ledeb.) Schinz ex Thellung which is commonly called common dandelion, fleshy dandelion, horned dandelion or rough dandelion. It is native to Canada and the western U.S.[31] Some sources list it as a species, Taraxacum ceratophorum.[32][33]
  • Taraxacum officinale subsp. officinale, which is commonly called common dandelion or wandering dandelion.
  • Taraxacum officinale subsp. vulgare (Lam.) Schinz & R. Keller, which is commonly called common dandelion.

Two of them have been introduced and established in Alaska and the third (subsp. ceratophorum) is native there.[34]

European dandelions edit

Taraxacum officinale L. (dandelion) is a vigorous weed in Europe with diploid sexual populations in the southern regions and partially overlapping populations of diploid sexuals and triploid or tetraploid apomicts in the central and northern regions.

 
Dandelion in Toško Čelo, Slovenia

These European dandelions can be divided into two groups. The first group reproduces sexually, as do most seed plants. This group consists of dandelions that have a diploid set of chromosomes, and are sexually self-incompatible. Sexual reproduction involves a reduction of the somatic chromosome number by meiosis followed by a restoration of the somatic chromosome number by fertilization. Diploid dandelions have eight pairs of chromosomes, and meiosis is regular with normal pairing of homologous chromosomes at the metaphase I stage of meiosis.[35]

The second group consists of polyploid (mostly triploid) apomicts, meaning that both a viable embryo as well as a functional endosperm is formed without prior fertilization. In contrast to the sexual diploids, the pairing of chromosomes at metaphase I in triploid apomicts is strongly reduced. However pairing is still sufficient to allow some recombination between homologous chromosomes.[35]

Etymology edit

Taraxacum is derived from the Arabic word tarakhshagog (or tarakhshaqūn) for a bitter herb.[36] It may be related to the Greek word ταρασσω (tarasso) meaning to disturb.[36][verification needed]

The Latin specific epithet officinale refers to the Latin word for 'medicinal' or 'of the apothecaries'.[37]

T. officinale has many English common names (some of which are no longer in use), including blowball, lion's-tooth, cankerwort, milk-witch, yellow-gowan, Irish daisy, monks-head, priest's-crown and puff-ball;[38] other common names include, faceclock, pee-a-bed, wet-a-bed,[39] swine's snout,[40] white endive, and wild endive.[41]

The common name dandelion comes from the French dent de lion, or "lion's tooth", in reference to the plant's jagged-edged leaves.[20] "Pee-a-bed" and "wet-a-bed" reflect the modern French term for the plant, pissenlit. This name and all those that imply ramped-up urine production refer to T. officinale's well-known diuretic properties.[42]

Distribution and habitat edit

 
Dandelions provide both pollen and nectar for the insects

Taraxacum officinale is native to Europe and Asia,[43] and was originally imported to America as a food crop.[44] It is now naturalized throughout North America, southern Africa, South America, New Zealand, Australia, and India. It occurs in all 50 states of the US and most Canadian provinces.[34]

The plant grows in temperate regions of the world in lawns, on roadsides, disturbed banks, shores of waterways, and other areas with moist soils.

The plant is coveted by collectors in regions where the plant is trickier to grow such as the tropics, where people would often resort to smuggling seeds from overseas.[45]

Conservation edit

Taraxacum officinale was evaluated in 2013 by the IUCN as "Least Concern" due to a large and stable population.[2] It was similarly evaluated by NatureServe in 2016 as "Globally Secure", G5.[3]

Ecology edit

It is considered a noxious weed in some jurisdictions,[46] and is considered to be a nuisance in residential and recreational lawns in North America.[47] It is also an important weed in agriculture and causes significant economic damage because of its infestation in many crops worldwide.[46]

T. officinale can serve as an indicator plant for soil potassium and calcium, as the plant favours soils with relatively low concentrations of calcium, but favours soils with relatively high concentrations of potassium.[48]

 
A field of dandelions in Weiler, Austria

The dandelion is a common colonizer of disturbed habitats, both from wind blown seeds and seed germination from the seed bank.[49] The seeds remain viable in the seed bank for many years, with one study showing germination after nine years. This species is a somewhat prolific seed producer, with 54 to 172 seeds produced per head, and a single plant can produce more than 5,000 seeds a year. It is estimated that more than 97,000,000 seeds/hectare could be produced yearly by a dense stand of dandelions.[50] When released, the seeds can be spread by the wind up to several hundred meters from their source. The seeds are also a common contaminant in crop and forage seeds. The plants are adaptable to most soils and the seeds are not dependent on cold temperatures before they will germinate but they need to be within the top 2.5 cm (1 in) of soil.[34] Dandelions can also regenerate themselves from fragments of taproot.[51]

T. officinale is food for the caterpillars of several Lepidoptera (butterflies and moths), such as the tortrix moth Celypha rufana. See also List of Lepidoptera that feed on dandelions.

Even though dandelion pollen is of poor nutritional quality for honey bees, they readily consume it, and it can be an important source of nutritional diversity in heavily managed monocultures such as that of blueberries.[52][53] Honey bees have not been shown to lower their pollination activity on nearby fruit crops when foraging on dandelions.[54]

While not in bloom, this species is sometimes confused with others, such as Chondrilla juncea, that have similar basal rosettes of foliage.[55] Another plant, sometimes referred to as fall dandelion, is very similar to dandelion, but produces "yellow fields" later. Its blooms resemble some of the species of Sonchus, but are larger.[56]

Dandelion thrives in conditions of elevated carbon dioxide, growing to a higher biomass and producing a larger number of viable seeds. Therefore, it is anticipated that dandelion will become more competitive and widespread as atmospheric carbon dioxide levels increase.[28]

Uses edit

Dandelion greens, raw
Nutritional value per 100 g (3.5 oz)
Energy188 kJ (45 kcal)
9.2 g
Sugars0.71 g
Dietary fiber3.5 g
0.7 g
2.7 g
VitaminsQuantity
%DV
Vitamin A equiv.
64%
508 μg
54%
5854 μg
13610 μg
Thiamine (B1)
17%
0.19 mg
Riboflavin (B2)
22%
0.26 mg
Niacin (B3)
5%
0.806 mg
Pantothenic acid (B5)
2%
0.084 mg
Vitamin B6
19%
0.251 mg
Folate (B9)
7%
27 μg
Choline
7%
35.3 mg
Vitamin C
42%
35 mg
Vitamin E
23%
3.44 mg
Vitamin K
741%
778.4 μg
MineralsQuantity
%DV
Calcium
19%
187 mg
Iron
24%
3.1 mg
Magnesium
10%
36 mg
Manganese
16%
0.342 mg
Phosphorus
9%
66 mg
Potassium
13%
397 mg
Sodium
5%
76 mg
Zinc
4%
0.41 mg
Other constituentsQuantity
Water85.6 g

Link to USDA Database entry
Percentages are roughly approximated using US recommendations for adults.
Source: USDA FoodData Central

The plant has several culinary uses: the flowers are used to make dandelion wine,[57] the greens are used in salads, the roots have been used to make a coffee substitute (when baked and ground into powder) and the plant was used by Native Americans as a food and medicine.[58]

Culinary edit

 
Plate of sauteed dandelion greens, with Wehani rice

Dandelions are harvested from the wild or grown on a small scale as a leaf vegetable. The leaves (called dandelion greens) can be eaten cooked or raw in various forms, such as in soup or salad. They are probably closest in character to mustard greens. Usually the young leaves and unopened buds are eaten raw in salads, while older leaves are cooked. Raw leaves have a slightly bitter taste. Dandelion salad is often accompanied with hard-boiled eggs. The leaves are high in vitamins A and C, as well as iron, phosphorus, and potassium.[59]

Dandelion flowers can be used to make dandelion wine, for which there are many recipes.[60] Most of these are more accurately described as "dandelion-flavored wine," as some other sort of fermented juice or extract serves as the main ingredient.[61] It has also been used in a saison ale called Pissenlit (the French word for dandelion, literally meaning "wet the bed") made by Brasserie Fantôme in Belgium. Dandelion and burdock is a soft drink that has long been popular in the United Kingdom.

Another recipe using the plant is dandelion flower jam. In Silesia and other parts of Poland and the world, dandelion flowers are used to make a honey substitute syrup with added lemon (so-called May-honey). Ground roasted dandelion root can be used as a non-caffeinated coffee substitute.[62]

Diuretic edit

T. officinale's diuretic properties - believed to be a result of the plant’s high potassium content[63] - have been well described, with the leaves of this plant having been used for this purpose in traditional Chinese medicine for approximately 2,000 years, with other regions of the world using the plant in the same way; in French, a common name for T. officinale is pissenlit, 'a colorful description of its diuretic activity.' A study conducted in 2009 noted 'promising' results regarding these diuretic properties, but that further studies would need to be conducted into the plant's efficacy.[64]

Herbal medicine edit

Dandelion has been used in traditional medicine in Europe, North America, and China.[65]

Research edit

Since asexually-reproducing dandelions produce genetically identical offspring, they are often useful as subjects for scientific research. For example, dandelions are used in studies where genetic differences between subjects need to be minimized.[66]

Education edit

Because of its worldwide distribution, familiarity, and presence in a wide variety of folkloric traditions, the dandelion has been highlighted as a valuable tool for educators seeking to help children of varying cultural and ethnic backgrounds connect to science through ethnobotany.[67]

Other edit

Yellow dye colors can be obtained from the flowers but little color can be obtained from the roots of the plant.[68] The latex can be used as a kind of glue.[69]

In culture edit

Cultures worldwide tell stories about the dandelion and have culinary and medicinal uses for it. A Native American folktale tells the story of a golden haired girl who attracted the fancy of the South Wind. The South Wind was too lazy to pursue her, until one day he realized she had grown old and her hair had turned white. Supposedly, when the South Wind sighs over the loss of his chance to pursue the golden-haired girl, his breath sends the white-haired dandelion seeds scattering to propagate more golden-haired daughters.[67]

See also edit

References edit

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  64. ^ Clare, Bevin A.; Conroy, Richard S.; Spelman, Kevin (August 2009). "The Diuretic Effect in Human Subjects of an Extract of Taraxacum officinale Folium over a Single Day". Journal of Alternative and Complementary Medicine. 15 (8): 929–934. doi:10.1089/acm.2008.0152. ISSN 1075-5535. PMC 3155102. PMID 19678785.
  65. ^ Katrin Schütz, Reinhold Carle & Andreas Schieber (2006). "Taraxacum—a review on its phytochemical and pharmacological profile". Journal of Ethnopharmacology. 107 (3): 313–323. doi:10.1016/j.jep.2006.07.021. PMID 16950583.
  66. ^ Adams, Keith L. (2010). "Dandelions 'remember' stress: heritable stress-induced methylation patterns in asexual dandelions". The New Phytologist. 185 (4): 867–868. doi:10.1111/j.1469-8137.2010.03189.x. PMID 20356338.
  67. ^ a b Esprivalo, Pamela Sue; Forney, Scott (2001). "Cultivating Cultural Appreciation: ADDRESSING DIVERSITY THROUGH ETHNOBOTANY". The Science Teacher. 68 (3).
  68. ^ Dyer, A. (1976). Dyes from Natural Sources. G. Bell & Sons Ltd., London
  69. ^ The Complete Guide to Edible Wild Plants. United States Department of the Army. New York: Skyhorse Publishing. 2009. p. 49. ISBN 978-1-60239-692-0. OCLC 277203364.{{cite book}}: CS1 maint: others (link)

Further reading edit

External links edit

  • Northernbushcraft.com: Dandelion (Taraxacum officinale) — detailed information about edibility.

taraxacum, officinale, dandelion, common, dandelion, herbaceous, perennial, flowering, plant, daisy, family, asteraceae, compositae, common, dandelion, well, known, yellow, flower, heads, that, turn, into, round, balls, many, silver, tufted, fruits, that, disp. Taraxacum officinale the dandelion or common dandelion 6 is a herbaceous perennial flowering plant in the daisy family Asteraceae syn Compositae The common dandelion is well known for its yellow flower heads that turn into round balls of many silver tufted fruits that disperse in the wind These balls are called clocks in both British and American English 7 8 9 10 The name blowball is also used 11 Taraxacum officinaleCommon dandelion 1 Conservation statusLeast Concern IUCN 3 1 2 Europe Secure NatureServe 3 Scientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsClade AsteridsOrder AsteralesFamily AsteraceaeGenus TaraxacumSpecies T officinaleBinomial nameTaraxacum officinale L Weber ex F H Wigg Synonyms 4 5 Crepis taraxacum L Stokes Leontodon taraxacum L Leontodon vulgare Lam Taraxacum campylodes G E Haglund Taraxacum dens leonis Desf Taraxacum mexicanum DC Taraxacum retroflexum Lindl Taraxacum subspathulatum A J Richards Taraxacum sylvanicum R Doll Taraxacum taraxacum L H Karst Taraxacum tenejapenseA J Richards Taraxacum vulgare SchrankThe common dandelion grows in temperate regions of the world in areas with moist soils They are very hardy plants able to grow in a variety of environments and are tolerant of crowding extremes of temperature and low moisture 12 As a result of this hardiness in addition to its ability to rapidly propagate itself the dandelion has become established over a wide range via human activity originally being native to Eurasia but can also be found across the Americas southern Africa India Australia and New Zealand as a result of incidental or deliberate introductions It is most often considered a weed especially in lawns and along roadsides but the leaves flowers and roots are sometimes used in herbal medicine and as food Contents 1 Description 1 1 Chemistry 2 Taxonomy 2 1 North American dandelions 2 2 European dandelions 2 3 Etymology 3 Distribution and habitat 3 1 Conservation 4 Ecology 5 Uses 5 1 Culinary 5 2 Diuretic 5 3 Herbal medicine 5 4 Research 5 5 Education 5 6 Other 6 In culture 7 See also 8 References 9 Further reading 10 External linksDescription edit nbsp Dandelion clocks showing among the grassTaraxacum officinale grows from generally unbranched taproots and produces several hollow leafless flower stems 13 470 that are typically 5 40 centimetres 2 15 3 4 inches tall but sometimes up to 70 cm 28 in tall The stems can be tinted purplish they are upright or lax and produce flower heads that are held as tall or taller than the foliage The foliage may be upright growing or horizontally spreading the leaves have petioles that are either unwinged or narrowly winged The stems can be glabrous or sparsely covered with short hairs Plants have milky latex and the leaves are all basal each flowering stem lacks bracts and has one single flower head The yellow flower heads lack receptacle bracts and all the flowers which are called florets are ligulate and bisexual In many lineages fruits are mostly produced by apomixis 14 notwithstanding the flowers are visited by many types of insects 15 The leaves are 5 45 cm 2 17 3 4 in long and 1 10 cm 1 2 4 in wide and are oblanceolate oblong or obovate in shape with the bases gradually narrowing to the petiole The leaf margins are typically shallowly lobed to deeply lobed and often lacerate or toothed with sharp or dull teeth 14 The calyculi the cuplike bracts that hold the florets are composed of 12 to 18 segments each segment is reflexed and sometimes glaucous The lanceolate shaped bractlets are in two series with the apices acuminate in shape The 14 25 millimetres 1 2 1 in wide involucres are green to dark green or brownish green with the tips dark gray or purplish The florets number 40 to over 100 per head having corollas that are yellow or orange yellow in color The fruits called cypselae 16 range in color from olive green or olive brown to straw colored to grayish they are oblanceoloid in shape and 2 3 mm 1 16 1 8 in long with slender beaks The fruits have 4 to 12 ribs that have sharp edges The silky pappi which form the parachutes are white to silver white in color and around 6 mm wide Plants typically have 24 or 40 pairs of chromosomes while some have 16 or 32 pairs 17 Chemistry edit TaraxalisinIdentifiersEC no CAS no 217442 60 9Taraxalisin is a serine proteinase found in the latex of dandelion roots 18 Rudenskaya et al 1998 found that taraxalisin hydrolyzes a chromogenic peptide substrate Glp Ala Ala Leu pNA optimally at pH 8 0 19 Maximal activity of the proteinase in the roots is attained in April at the beginning of plant development after the winter period 19 Taxonomy edit nbsp nbsp Dandelion flower left and ripe fruits Carl Linnaeus named the species Leontodon taraxacum in 1753 The current genus name Taraxacum derives possibly from the Arabic Tharakhchakon 14 or from the Greek Tarraxos 20 The specific name officinalis refers to its value as a medicinal herb and is derived from the word opificina later officina meaning a workshop or pharmacy 21 The taxonomy of the genus Taraxacum is complicated by apomictic and polyploid lineages 22 23 and the taxonomy and nomenclatural situation of T officinale is not yet fully resolved 17 The taxonomy of this genus has been complicated by the recognition of numerous species 24 subspecies and microspecies For example Rothmaler s flora of Germany recognizes roughly 70 microspecies 25 T officinale has a fossil record that goes back to glacial and interglacial times in Europe 26 North American dandelions edit nbsp Saint Prosper de Champlain Quebec CanadaThe plants introduced to North America originally as a food crop are triploids that mainly reproduce by obligate gametophytic apomixis 17 27 Though sexual dandelion plants are known in North America almost all are clones that produce genetically identical seeds through apomixis 28 Some authorities recognize three subspecies of Taraxacum officinale including 29 30 Taraxacum officinale subsp ceratophorum Ledeb Schinz ex Thellung which is commonly called common dandelion fleshy dandelion horned dandelion or rough dandelion It is native to Canada and the western U S 31 Some sources list it as a species Taraxacum ceratophorum 32 33 Taraxacum officinale subsp officinale which is commonly called common dandelion or wandering dandelion Taraxacum officinale subsp vulgare Lam Schinz amp R Keller which is commonly called common dandelion Two of them have been introduced and established in Alaska and the third subsp ceratophorum is native there 34 European dandelions edit Taraxacum officinale L dandelion is a vigorous weed in Europe with diploid sexual populations in the southern regions and partially overlapping populations of diploid sexuals and triploid or tetraploid apomicts in the central and northern regions nbsp Dandelion in Tosko Celo SloveniaThese European dandelions can be divided into two groups The first group reproduces sexually as do most seed plants This group consists of dandelions that have a diploid set of chromosomes and are sexually self incompatible Sexual reproduction involves a reduction of the somatic chromosome number by meiosis followed by a restoration of the somatic chromosome number by fertilization Diploid dandelions have eight pairs of chromosomes and meiosis is regular with normal pairing of homologous chromosomes at the metaphase I stage of meiosis 35 The second group consists of polyploid mostly triploid apomicts meaning that both a viable embryo as well as a functional endosperm is formed without prior fertilization In contrast to the sexual diploids the pairing of chromosomes at metaphase I in triploid apomicts is strongly reduced However pairing is still sufficient to allow some recombination between homologous chromosomes 35 Etymology edit Taraxacum is derived from the Arabic word tarakhshagog or tarakhshaqun for a bitter herb 36 It may be related to the Greek word tarassw tarasso meaning to disturb 36 verification needed The Latin specific epithet officinale refers to the Latin word for medicinal or of the apothecaries 37 T officinale has many English common names some of which are no longer in use including blowball lion s tooth cankerwort milk witch yellow gowan Irish daisy monks head priest s crown and puff ball 38 other common names include faceclock pee a bed wet a bed 39 swine s snout 40 white endive and wild endive 41 The common name dandelion comes from the French dent de lion or lion s tooth in reference to the plant s jagged edged leaves 20 Pee a bed and wet a bed reflect the modern French term for the plant pissenlit This name and all those that imply ramped up urine production refer to T officinale s well known diuretic properties 42 Distribution and habitat edit nbsp Dandelions provide both pollen and nectar for the insectsTaraxacum officinale is native to Europe and Asia 43 and was originally imported to America as a food crop 44 It is now naturalized throughout North America southern Africa South America New Zealand Australia and India It occurs in all 50 states of the US and most Canadian provinces 34 The plant grows in temperate regions of the world in lawns on roadsides disturbed banks shores of waterways and other areas with moist soils The plant is coveted by collectors in regions where the plant is trickier to grow such as the tropics where people would often resort to smuggling seeds from overseas 45 Conservation edit Taraxacum officinale was evaluated in 2013 by the IUCN as Least Concern due to a large and stable population 2 It was similarly evaluated by NatureServe in 2016 as Globally Secure G5 3 Ecology editIt is considered a noxious weed in some jurisdictions 46 and is considered to be a nuisance in residential and recreational lawns in North America 47 It is also an important weed in agriculture and causes significant economic damage because of its infestation in many crops worldwide 46 T officinale can serve as an indicator plant for soil potassium and calcium as the plant favours soils with relatively low concentrations of calcium but favours soils with relatively high concentrations of potassium 48 nbsp A field of dandelions in Weiler AustriaThe dandelion is a common colonizer of disturbed habitats both from wind blown seeds and seed germination from the seed bank 49 The seeds remain viable in the seed bank for many years with one study showing germination after nine years This species is a somewhat prolific seed producer with 54 to 172 seeds produced per head and a single plant can produce more than 5 000 seeds a year It is estimated that more than 97 000 000 seeds hectare could be produced yearly by a dense stand of dandelions 50 When released the seeds can be spread by the wind up to several hundred meters from their source The seeds are also a common contaminant in crop and forage seeds The plants are adaptable to most soils and the seeds are not dependent on cold temperatures before they will germinate but they need to be within the top 2 5 cm 1 in of soil 34 Dandelions can also regenerate themselves from fragments of taproot 51 T officinale is food for the caterpillars of several Lepidoptera butterflies and moths such as the tortrix moth Celypha rufana See also List of Lepidoptera that feed on dandelions Even though dandelion pollen is of poor nutritional quality for honey bees they readily consume it and it can be an important source of nutritional diversity in heavily managed monocultures such as that of blueberries 52 53 Honey bees have not been shown to lower their pollination activity on nearby fruit crops when foraging on dandelions 54 While not in bloom this species is sometimes confused with others such as Chondrilla juncea that have similar basal rosettes of foliage 55 Another plant sometimes referred to as fall dandelion is very similar to dandelion but produces yellow fields later Its blooms resemble some of the species of Sonchus but are larger 56 Dandelion thrives in conditions of elevated carbon dioxide growing to a higher biomass and producing a larger number of viable seeds Therefore it is anticipated that dandelion will become more competitive and widespread as atmospheric carbon dioxide levels increase 28 Uses editDandelion greens rawNutritional value per 100 g 3 5 oz Energy188 kJ 45 kcal Carbohydrates9 2 gSugars0 71 gDietary fiber3 5 gFat0 7 gProtein2 7 gVitaminsQuantity DV Vitamin A equiv beta Carotenelutein zeaxanthin64 508 mg54 5854 mg13610 mgThiamine B1 17 0 19 mgRiboflavin B2 22 0 26 mgNiacin B3 5 0 806 mgPantothenic acid B5 2 0 084 mgVitamin B619 0 251 mgFolate B9 7 27 mgCholine7 35 3 mgVitamin C42 35 mgVitamin E23 3 44 mgVitamin K741 778 4 mgMineralsQuantity DV Calcium19 187 mgIron24 3 1 mgMagnesium10 36 mgManganese16 0 342 mgPhosphorus9 66 mgPotassium13 397 mgSodium5 76 mgZinc4 0 41 mgOther constituentsQuantityWater85 6 gLink to USDA Database entryUnits mg micrograms mg milligrams IU International units Percentages are roughly approximated using US recommendations for adults Source USDA FoodData CentralThe plant has several culinary uses the flowers are used to make dandelion wine 57 the greens are used in salads the roots have been used to make a coffee substitute when baked and ground into powder and the plant was used by Native Americans as a food and medicine 58 Culinary edit nbsp Plate of sauteed dandelion greens with Wehani riceDandelions are harvested from the wild or grown on a small scale as a leaf vegetable The leaves called dandelion greens can be eaten cooked or raw in various forms such as in soup or salad They are probably closest in character to mustard greens Usually the young leaves and unopened buds are eaten raw in salads while older leaves are cooked Raw leaves have a slightly bitter taste Dandelion salad is often accompanied with hard boiled eggs The leaves are high in vitamins A and C as well as iron phosphorus and potassium 59 Dandelion flowers can be used to make dandelion wine for which there are many recipes 60 Most of these are more accurately described as dandelion flavored wine as some other sort of fermented juice or extract serves as the main ingredient 61 It has also been used in a saison ale called Pissenlit the French word for dandelion literally meaning wet the bed made by Brasserie Fantome in Belgium Dandelion and burdock is a soft drink that has long been popular in the United Kingdom Another recipe using the plant is dandelion flower jam In Silesia and other parts of Poland and the world dandelion flowers are used to make a honey substitute syrup with added lemon so called May honey Ground roasted dandelion root can be used as a non caffeinated coffee substitute 62 Diuretic edit T officinale s diuretic properties believed to be a result of the plant s high potassium content 63 have been well described with the leaves of this plant having been used for this purpose in traditional Chinese medicine for approximately 2 000 years with other regions of the world using the plant in the same way in French a common name for T officinale is pissenlit a colorful description of its diuretic activity A study conducted in 2009 noted promising results regarding these diuretic properties but that further studies would need to be conducted into the plant s efficacy 64 Herbal medicine edit Dandelion has been used in traditional medicine in Europe North America and China 65 Research edit Since asexually reproducing dandelions produce genetically identical offspring they are often useful as subjects for scientific research For example dandelions are used in studies where genetic differences between subjects need to be minimized 66 Education edit Because of its worldwide distribution familiarity and presence in a wide variety of folkloric traditions the dandelion has been highlighted as a valuable tool for educators seeking to help children of varying cultural and ethnic backgrounds connect to science through ethnobotany 67 Other edit Yellow dye colors can be obtained from the flowers but little color can be obtained from the roots of the plant 68 The latex can be used as a kind of glue 69 In culture editCultures worldwide tell stories about the dandelion and have culinary and medicinal uses for it A Native American folktale tells the story of a golden haired girl who attracted the fancy of the South Wind The South Wind was too lazy to pursue her until one day he realized she had grown old and her hair had turned white Supposedly when the South Wind sighs over the loss of his chance to pursue the golden haired girl his breath sends the white haired dandelion seeds scattering to propagate more golden haired daughters 67 See also editTaraxacum erythrospermumReferences edit 1897 illustration from Franz Eugen Kohler Kohler s Medizinal Pflanzen a b IUCN Red List of Threatened Species Taraxacum officinale 5 April 2013 a b NatureServe 2023 Taraxacum officinale NatureServe Explorer Arlington Virginia Archived from the original on 28 May 2023 Retrieved 28 October 2023 Tropicos Name Taraxacum officinale F H Wigg tropicos org Taraxacum campylodes G E Haglund The Plant List theplantlist org USDA NRCS n d Taraxacum officinale The PLANTS Database plants usda gov Greensboro North Carolina National Plant Data Team Retrieved 8 December 2015 Definition of blowball Collins English Dictionary collinsdictionary com blowball meaning and definitions infoplease com dandelion clock Definition from Longman English Dictionary Online Ldoceonline com Retrieved 2010 07 03 Clock dictionary definition clock defined yourdictionary com blowball TheFreeDictionary com Dandelion Taraxacum officinale Wisconsin Horticulture Retrieved 2023 10 02 Rose Francis 2006 The wild flower key London Penguim BooksLtd ISBN 978 0 7232 5175 0 a b c Morley T I 1969 Spring Flora of Minnesota 1974 Reprint with Minor Corrections 255 Van Der Kooi C J Pen I Staal M Stavenga D G Elzenga J T M 2015 Competition for pollinators and intra communal spectral dissimilarity of flowers Plant Biology 18 1 56 62 doi 10 1111 plb 12328 PMID 25754608 Cypsela Steere Herbarium New York Botanical Garden Retrieved 18 February 2020 a b c Taraxacum officinale in Flora of North America Efloras org Retrieved 2011 10 23 Bogacheva A M Rudenskaya G N Preusser A Tchikileva I O Dunaevsky Y E Golovkin B N Stepanov V M 1999 A new subtilisin like proteinase from roots of the dandelion Taraxacum officinale Webb S L Biochemistry Biokhimiia 64 9 1030 7 PMID 10521720 a b Rudenskaya G N Bogacheva A M Preusser A Kuznetsova A V Dunaevsky YaE null Golovkin B N Stepanov V M 1998 10 23 Taraxalisin a serine proteinase from dandelion Taraxacum officinale Webb s l FEBS Letters 437 3 237 240 doi 10 1016 s0014 5793 98 01243 5 ISSN 0014 5793 PMID 9824298 S2CID 43872064 a b Kowalchik Claire Hylton William H Carr Anna 1987 Rodale s illustrated encyclopedia of herbs Emmaus Pa Rodale Press p 141 ISBN 978 0 87857 699 9 Stearn W T 1992 Botanical Latin History grammar syntax terminology and vocabulary Fourth edition David and Charles Wittzell Hakan 1999 Chloroplast DNA variation and reticulate evolution in sexual and apomictic sections of dandelions Molecular Ecology 8 12 2023 35 doi 10 1046 j 1365 294x 1999 00807 x PMID 10632854 S2CID 25180463 Dijk Peter J van 2003 Ecological and evolutionary opportunities of apomixis insights from Taraxacum and Chondrilla Philosophical Transactions of the Royal Society B 358 1434 1113 21 doi 10 1098 rstb 2003 1302 PMC 1693208 PMID 12831477 Thomas Gaskell Tutin 1976 Flora Europaea Plantaginaceae to Compositae and Rubiaceae Cambridge University Press pp 332 ISBN 978 0 521 08717 9 Retrieved 29 October 2010 Rothmaler Werner 1966 Exkursionsflora Kritischer Erganzungsband Gefasspflanzen p 347 Taraxacum officinale complex dandelion Cabi org Retrieved 2019 06 17 Lyman JC Ellstrand NC 1984 Clonal diversity in Taraxacum officinale Compositae an apomict Heredity 53 1 1 10 doi 10 1038 hdy 1984 58 a b McPeek Tamara M Wang Xianzhong 2007 Reproduction of Dandelion Taraxacum officinale in a Higher CO2 Environment Weed Science 55 4 334 340 doi 10 1614 WS 07 021 S2CID 86250272 ITIS Standard Report Page Taraxacum officinale Itis gov 2010 05 13 Retrieved 2011 10 23 Robert F Barnes C Jerry Nelson Kenneth J Moore Michael Collins 19 January 2007 Forages The science of grassland agriculture Wiley Blackwell pp 11 ISBN 978 0 8138 0232 9 Retrieved 29 October 2010 PLANTS Profile for Taraxacum officinale ssp ceratophorum common dandelion USDA PLANTS Plants usda gov Retrieved 2011 10 23 Taraxacum ceratophorum Calflora Retrieved 2011 10 23 Taraxacum ceratophorum in Flora of North America Efloras org Retrieved 2011 10 23 a b c What is AKEPIC Alaska Natural Heritage Program PDF Akweeds uaa alaska edu 2010 11 15 Retrieved 2011 10 23 a b van Baarlen P van Dijk PJ Hoekstra RF de Jong JH October 2000 Meiotic recombination in sexual diploid and apomictic triploid dandelions Taraxacum officinale L Genome 43 5 827 35 doi 10 1139 g00 047 PMID 11081973 a b Gledhill David 2008 The Names of Plants Cambridge University Press ISBN 9780521866453 hardback ISBN 9780521685535 paperback pp 279 371 Coombes Allen 2012 The A to Z of Plant Names A Quick Reference Guide to 4000 Garden Plants Portland OR US Timber Press p 40 ISBN 9781604691962 Britton N F Brown Addison 1970 An illustrated flora of the northern United States and Canada from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102d meridian New York Dover Publications p 315 ISBN 978 0 486 22644 6 Alaska U S National Park Service PDF Nps gov 2018 12 19 Retrieved 2019 06 17 Loewer Peter 2001 Solving weed problems Guilford Conn Lyons Press p 210 ISBN 978 1 58574 274 5 Swine s Snout Dandelion clock TheFreeDictionary com Clare B A Conroy R S Spelman K 2009 The Diuretic Effect in Human Subjects of an Extract of Taraxacum officinale Folium over a Single Day Journal of Alternative and Complementary Medicine 15 8 929 934 doi 10 1089 acm 2008 0152 PMC 3155102 PMID 19678785 Vit Bojnansky Agata Fargasova 2007 Atlas of Seeds and Fruits of Central and East European Flora The Carpathian Mountains Region シュプリンガー ジャパン株式会社 pp 751 ISBN 978 1 4020 5361 0 Retrieved 29 October 2010 Tekiela Stan 1999 Wildflowers of Minnesota Field Guide Cambridge Minnesota Adventure Publications Inc p 343 ISBN 978 1 885061 63 8 Wong James 16 May 2021 Why the dandelion blows away some plant collectors The Guardian Retrieved 9 September 2021 a b Stewart Wade S M S Newmann L L Collins G J Boland 2002 The biology of Canadian weeds 117 Taraxacum officinale G H Weber ex Wiggers Canadian Journal of Plant Science 82 4 825 853 doi 10 4141 P01 010 Richardson Jonathan 1985 In praise of the archenemy Audubon 87 37 39 Almanac Old Farmer s Weeds as Indicator Plants Old Farmer s Almanac Retrieved 2020 04 10 Taraxacum officinale Fs fed us Retrieved 2011 10 23 Binning Kim 2002 Dandelion University of Wisconsin Weed Science Cooperative Extension Martinkova Zdenka Honek Alois Pekar Stano 2014 The Role of Nurse Plants in Facilitating the Germination of Dandelion Taraxacum officinale Seeds Weed Science 62 3 474 482 doi 10 1614 WS D 13 00162 1 S2CID 85658841 Schmidt Justin O Thoenes Steven C Levin M D 1987 Survival of honey bees Apis mellifera Hymenoptera Apidae fed various pollen sources Annals of the Entomological Society of America 80 2 176 183 doi 10 1093 aesa 80 2 176 Girard Melissa Chagnon Madeleine Fournier Valerie 2012 Pollen diversity collected by honey bees in the vicinity of Vaccinium spp crops and its importance for colony development Botany 90 7 545 555 doi 10 1139 b2012 049 hdl 20 500 11794 39125 Laverty Terence Hiemstra Henry 1998 Effects of flowering dandelions as a competitor to flowers of fruit trees for pollen collecting honey bees in Ontario The Proceedings of the Entomological Society of Ontario 129 3 8 Stewart Wade S M Neumann S Collins L L Boland G J 2002 10 01 The biology of Canadian weeds 117 Taraxacum officinale G H Weber ex Wiggers Canadian Journal of Plant Science 82 4 825 853 doi 10 4141 P01 010 ISSN 0008 4220 Sonchus North Carolina Extension Gardener Plant Toolbox Recipes Dandelion Wine Cooks com Retrieved 2011 10 23 Clarke Charlotte Bringle 1977 Edible and useful plants of California Berkeley University of California Press p 191 ISBN 978 0 520 03261 3 Benoliel Doug 2011 Northwest Foraging The Classic Guide to Edible Plants of the Pacific Northwest Rev and updated ed Seattle WA Skipstone p 73 ISBN 978 1 59485 366 1 OCLC 668195076 winemaking Dandelion Wines Winemaking jackkeller net 2004 05 22 Retrieved 2012 07 20 Gibbons E Stalking the Wild Asparagus David McKay New York 1962 Sztabowa Wera 1990 Krupnioki i moczka czyli gawedy o slaskiej kuchni Wydawnictwo Slask Katowice ISBN 83 216 0935 X Dog Tieraona Low 2005 01 01 Dog Tieraona Low ed CHAPTER 18 Urinary Tract Infection Women s Health in Complementary and Integrative Medicine Saint Louis Churchill Livingstone pp 293 306 ISBN 978 0 443 06639 9 retrieved 2022 09 14 Clare Bevin A Conroy Richard S Spelman Kevin August 2009 The Diuretic Effect in Human Subjects of an Extract of Taraxacum officinale Folium over a Single Day Journal of Alternative and Complementary Medicine 15 8 929 934 doi 10 1089 acm 2008 0152 ISSN 1075 5535 PMC 3155102 PMID 19678785 Katrin Schutz Reinhold Carle amp Andreas Schieber 2006 Taraxacum a review on its phytochemical and pharmacological profile Journal of Ethnopharmacology 107 3 313 323 doi 10 1016 j jep 2006 07 021 PMID 16950583 Adams Keith L 2010 Dandelions remember stress heritable stress induced methylation patterns in asexual dandelions The New Phytologist 185 4 867 868 doi 10 1111 j 1469 8137 2010 03189 x PMID 20356338 a b Esprivalo Pamela Sue Forney Scott 2001 Cultivating Cultural Appreciation ADDRESSING DIVERSITY THROUGH ETHNOBOTANY The Science Teacher 68 3 Dyer A 1976 Dyes from Natural Sources G Bell amp Sons Ltd London The Complete Guide to Edible Wild Plants United States Department of the Army New York Skyhorse Publishing 2009 p 49 ISBN 978 1 60239 692 0 OCLC 277203364 a href Template Cite book html title Template Cite book cite book a CS1 maint others link Further reading editBlanchan Neltje 2005 Wild Flowers Worth Knowing Project Gutenberg Literary Archive Foundation ISBN 978 0 665 98934 6 Everitt J H Lonard R L Little C R 2007 Weeds in South Texas and Northern Mexico Lubbock Texas Tech University Press ISBN 978 0 89672 614 7 ISBN 0 89672 614 2 Kohler Franz Eugen 1887 Kohler s Medicinal Plants Gustav Pabst Vorobyev G Alyabyev A Ogorodnikova T Khamidullin A Vorobyev V April 5 2014 Adaptive properties of the dandelion Taraxacum officinale Wigg s l under conditions of air pollution by motor vehicle exhausts Russian Journal of Ecology 45 2 90 94 doi 10 1134 S1067413614020106 S2CID 9147896 Kenny O Brunton N P Walsh D April 2015 Characterisation of Antimicrobial Extracts from Dandelion Root Taraxacum officinale Phytotherapy Research 29 4 526 532 doi 10 1002 ptr 5276 PMID 25644491 S2CID 5564213 External links edit nbsp Wikiversity has bloom time data for Taraxacum officinale on the Bloom Clock nbsp Wikimedia Commons has media related to Taraxacum officinale nbsp Wikispecies has information related to Taraxacum officinale Northernbushcraft com Dandelion Taraxacum officinale detailed information about edibility Retrieved from https en wikipedia org w index php title Taraxacum officinale amp oldid 1182364928, wikipedia, wiki, book, books, library,

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