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Sunflower


Sunflower
Photo Information
Copyright: Siegfried Potrykus (neusser0204) Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 495 W: 48 N: 1830] (7252)
Genre: Places
Medium: Color
Date Taken: 2009-08
Categories: Nature
Photo Version: Original Version
Date Submitted: 2009-10-18 1:52
Viewed: 130
Points: 32
[Note Guidelines] Photographer's Note
For other uses, see Sunflower (disambiguation).
Sunflowers (Helianthus annuus) are annual plants native to the Americas, that possess a large inflorescence (flowering head).
Head displaying florets in spirals of 34 and 55 around the outsideWhat is usually called the flower is actually a head (formally composite flower) of numerous florets (small flowers) crowded together. The outer florets are the sterile ray florets and can be yellow, maroon, orange, or other colors. The florets inside the circular head are called disc florets, which mature into what are traditionally called "sunflower seeds," but are actually the fruit (an achene) of the plant. The inedible husk is the wall of the fruit and the true seed lies within the kernel.
The florets within the sunflower's cluster are arranged in a spiral pattern. Typically each floret is oriented toward the next by approximately the golden angle, 137.5°, producing a pattern of interconnecting spirals where the number of left spirals and the number of right spirals are successive Fibonacci numbers. Typically, there are 34 spirals in one direction and 55 in the other; on a very large sunflower there could be 89 in one direction and 144 in the other.[1][2][3] This pattern produces the most efficient packing of seeds within the flower head.
Sunflowers in the bud stage exhibit heliotropism. At sunrise, the faces of most sunflowers are turned towards the east. Over the course of the day, they follow the sun from east to west, while at night they return to an eastward orientation. This motion is performed by motor cells in the pulvinus, a flexible segment of the stem just below the bud. As the bud stage ends, the stem stiffens and the blooming stage is reached.

Sunflowers in their blooming stage lose their heliotropic capacity. The stem becomes "frozen", typically in an eastward orientation.[citation needed] The stem and leaves lose their green color.

The wild sunflower typically does not turn toward the sun; its flowering heads may face many directions when mature. However, the leaves typically exhibit some heliotropism.
(Wikipedia)
roges, mikolaj_cava, fransx, Royaldevon, horias, cunejo200, Saba, cloud, boreocypriensis, tanburi has marked this note useful
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Critiques [Translate]

  • Great 
  • roges Gold Star Critiquer/Gold Note Writer [C: 572 W: 0 N: 1085] (5314)
  • [2009-10-18 1:55]

Hello Siggi,

A very beautiful picture. Super macro with excellent details! Even look at your picture, the outside ... rains and is cold here.
Best Sunday,
Adrian

Czesc Siegfried! Swietne kolory, doskonala precyzyjna ostrosc, bardzo dobrze dobrany jasny obiektyw. Klaniam sie!

Hallo Siegfried,

A nice capture of the sunflower with great details! A pity that the left upper corner of the picture is blown out, however, the picture quality is praiseworthy overall. I like the central part of the flower. The glowing petals are telling their own story.

Well done, my friend.

best regards,
Paras

Bonjour Siggi.
Splendide soleil qui vient illuminer ce dimanche matin.
Les couleurs sont très belles.
Bon dimanche.
Urs

Hi Siegfried,
A wonderful face to face capture of this beautiful sunflower!
A pure 360 deg. sphere adorned with fantastic light and impeccable sharpness!
Great details and a nice play of shades and shadows,
Very neat work!
Best regards,

Francis Xavier

Hello Siggi,

A very well captured sunflower, sharp, sunkissed and displaying fine textures and colours.
For me though, the composition is just not quite there ... it would have been nice to have had the l/h leaf in frame so the edge of the petals are not clipped.
There is slight pixelation in the sky. A tip - this can often be removed with the blur tool.

Have a good day,
Bev :-)

Siggi
Wonderful sunflower today!
Great details, lovely colors!
Horia

Hello Siegfried,
The last hurrah of summer. This is an exquisite sinflower posting as it shoowcases the flower's immaculate symmetry, colors, and design. Sharp and it looks great against the uneven blue sky. Regards.
Danilo

Bonjour Siegfried,
Ô! Merveilleux ce soleil, couleurs lumineuses à souhaits.
Bon dimanche.
Yolande

  • Great 
  • Saba Gold Star Critiquer/Gold Note Writer [C: 628 W: 0 N: 1703] (9540)
  • [2009-10-18 7:15]

Witaj Sigi :)

Piekny, cudowny, fantastyczny slonecznik
i jego wspaniale wykonanie!!!
Bardzo, bardzo mi sie podoba.

Moje wielkie gratulacje i serdeczne pozdrowienia.
Barbara

Hi Siggi!
nice shot! warm tones with nice clear details...nice composition, but i would've left a bit more space to breathe, but i still consider this a great composition...
tfs
regards,
Alper

Great focus colors and details.
Very nice congratulation,
Zoran

  • Great 
  • cloud Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 70 W: 54 N: 92] (1793)
  • [2009-10-18 8:54]

Witaj Siggi,
Na tym portalu bywam rzadziej i nawet nie zauwazylem poczatkowo kto jest autorem tego pieknego slonecznika. Piekna symetria i nasycenie pomaranczowego koloru. Szkoda, ze troche jest przeswietlone w bialym obszarze.
Pozdrawiam, Pawel

Ciao Siggi, fantastic sunflower, wonderful colors, splendid sharpness and superb details, very well done, ciao Silvio

Hi MF Siggi,
Splendid macro of a sunflower. Excellent clarity and delightful composition.
TFS and have a nice new week!
Cheers,
Bayram

Hello Siegfried,
Amazing light, details and texture of sunflower petals...
TFS
Selahattin E

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