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"Dandelion"
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| Photo Information |
Copyright: Siegfried Potrykus (neusser0204)
![Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 479 W: 48 N: 1798]](http://i1.treklens.com/misc/g-s-g.gif) (6960) |
| Genre: Places |
| Medium: Color |
| Date Taken: 2009-04-04 |
| Categories: Nature |
| Exposure: f/8, 1/125 seconds |
| More Photo Info: [view] |
| Photo Version: Original Version |
| Date Submitted: 2009-06-25 0:27 |
| Viewed: 129 |
| Points: 18 |
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| [Note Guidelines] Photographer's Note |
"Dandelion" redirects here. For other uses, see Dandelion (disambiguation).
Dandelion
A dandelion flower (top) and parachute ball (bottom)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichoriea
Genus: Taraxacum
Cass.
Species
See text
Taraxacum is a large genus of flowering plants in the family Asteraceae. They are native to Europe and Asia, and two species, T. officinale and T. erythrospermum, are found as weeds worldwide.[1] The common name Dandelion (pronounced /ˈdændɨlaɪ.ən/ (DAN-dih-ly-un) is given to members of the genus and like other members of the Asteraceae family, they have very small flowers collected together into a composite flower head. Each single flower in a head is called a floret. Many Taraxacum species produce seeds asexually by apomixis, where the seeds are produced without pollination, resulting in offspring that are genetically identical to the parent plant.[2]
Contents [hide]
1 Description
2 Taxonomy
3 Selected species
4 Seed dispersal
5 False dandelions
6 History
6.1 Origin of the name
7 Culinary
8 Nutritional properties
9 Medicinal Uses
10 Antioxidant
10.1 Caffeic acid and carcinogenicity
11 Bees
12 Pearl bordered Fritillary
13 Gallery
14 See also
15 References
16 External links
Description
A dandelion flower head composed of hundreds of smaller florets.The species of Taraxacum are tap-rooted biennial or perennial herbaceous plants, native to temperate areas of the Old World.
The leaves are 5–25 cm long or longer, simple and basal, entire or lobed, forming a rosette above the central taproot. The flower heads are yellow to orange colored, and are open in the daytime but closed at night. The heads are borne singly on a hollow stem (scape) which rises 4–75 cm[3] above the leaves and exudes a milky sap (latex) when broken. A rosette may produce several flowering stems at a time. The flower heads are 2–5 cm in diameter and consists entirely of ray florets. The flower heads mature into a spherical "clocks"[citation needed] (also known as a "wishie"[citation needed]) containing many single-seeded fruits called achenes. Each achene is attached to a pappus of fine hairs, which enable wind-aided dispersal over long distances.
A dandelion flower in the closing state.The flower head is surrounded by bracts (sometimes mistakenly called sepals) in two series. The inner bracts are erect until the seeds mature, then flex downward to allow the seeds to disperse; the outer bracts are always reflexed downward. Some species drop the "parachute" from the achenes; the hair-like parachutes are called pappus, and they are modified sepals. Between the pappus and the achene, there is a stalk called a beak, which elongates as the fruit matures. The beak breaks off from the achene quite easily, separating the seed from the parachute.
Dandelion leaves are believed to have a diuretic effect as they increase salt and water excretion from the kidneys.
(Wikipedia) |
suzy, tedesse, skobek, Emma, boreocypriensis, jan515 has marked this note useful
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- ayse51
![Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1677 W: 124 N: 1435]](http://i1.treklens.com/misc/g-g-g.gif)
(20172) - [2009-06-25 1:04]
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Hi Siegfried,
Great art work.I liked beautiful harmöny of the coloursand light so much.Bravo.Necla.
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- nicou
![Gold Star Critiquer/Gold Note Writer [C: 1249 W: 0 N: 2438]](http://i1.treklens.com/misc/g-n-g.gif)
(20094) - [2009-06-25 2:29]
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Hello,
encore une fantastiqu fleur, comme une belle boule, le tou$on ssont fantastique et la présentation parfait, merveilleux.
bravo et amitié
Nicou
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- soe
(2461)
- [2009-06-25 4:17]
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Hi Siegfried
Great PP work. Beautiful color and lighting.Great sharpness and detail.
Tin Soe
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- suzy
(4336)
- [2009-06-25 6:24]
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Hi Siegfried
very eyecatching colors and a wonderful artistic presentation..
superb sharpness and contrast and fine lighting...
I like the frame inside the frame work, I think it's original..
excellent work..
regards
suzy
Witaj!
Imponujaca notka!!!
Kolejna piekna kompozycja kwiatowa.
Piekny obraz,super swiatlo i mile dla oka kolory.
Piekna praca.
Pozdrawiam
Tadeusz
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- skobek
(1887)
- [2009-06-25 8:44]
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Witaj,
dendelion nazywamy popularnie dmuchawcem. Lubie szalenie te kwiatki za ich uroczą żółtą barwę, gdy zakwitną w większej ilości to dają prawdziwy kwiatowy dywan. Pięknie świeci ten Twój kwiatek żółtym światłem.
Pozdrowienia - Sławek
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- Emma
(10151)
- [2009-06-25 13:14]
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Witaj Siegfried,
Piekny obraz i kompozycja tego kwiata. Bardzo podoba mi sie wykonanie jak barwy,kontrast i swiatlo.
Pozdrawiam.
Eva
An a nother fine addition to the series MF.
Perfect one.
TFS and cheers,
Bayram
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- jan515
(17484)
- [2009-06-25 13:58]
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Witaj Siegfried,
W pieknym swietle przedstawiasz tego mniszka lekarskiego o ile jeszcze pamietam albo dmuchawiec. Piekny kolor,wspanialy kontrast do tego taki opis.Podoba mi sie ta prezentacja Twojej serii jest swietna.
Pozdrawiam.
Janusz
