The Beautiful Sunflower. - a photo on Flickriver

            The Beautiful Sunflower.
What is usually called the "flower" on a mature sunflower is actually a "flower head" (also known as a "composite flower") of numerous florets (small flowers) crowded together. The outer petal-bearing florets are the sterile florets and can be yellow, red, orange, or other colors. The florets inside the circular head are called disc florets, which mature into seeds.
The flower petals within the sunflower's cluster are usually in a a spiral pattern. Generally, 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. This pattern produces the most efficient packing of seeds within the flower head.
Sunflowers commonly grow to heights between 1.5 and 3.5 m (5–12 ft). The tallest sunflower confirmed by Guinness World Records is 8.0 m (2009, Germany); surpassing the previous record of 7.8 m (1986, Netherlands). In 16th century Europe the record was 7.3 m (24 ft, Spain).
Source Wikipedia.
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Taken in: Canada / Saskatchewan / Saskatoon / Nutana (show map)

Taken on: September 22, 2012

Tags:

nature.

flowers.

canon.

colour.

seeds.

edible.

florets.

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Sets appears in: • Flowers, Buds and Trees

Groups appears in: • FLOWERS • Flower Close-Ups more » • ***SCREAM OF THE PHOTOGRAPHER*** • Art-Color-Fun. (Pos 1, Award on 2) • !*Flickr Award Group*! (GIVE 5 AWARDS) • The Elite Photographer Level 2 POST 1 AWARD 5 • 0 "Elite Club" (Starting here!) • THE LOOK level 1 RED • THE LOOK level 2 YELLOW • THE LOOK level 3 ORANGE • THE LOOK level 4 PURPLE • THE LOOK level 5 GREEN • THE LOOK level 6 BLUE « less

Camera: Canon EOS 5D Mark II, f/14.0, 1/4 sec, 180mm, ISO 100 (more info) (hide info)

Camera:	Canon EOS 5D Mark II
Aperture:	f/14.0
Exposure Time:	0.25 sec (1/4)
Focal Length:	180mm
ISO:	100
Color Space:	sRGB
Software:	Adobe Photoshop Elements 9.0 Macintosh
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