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Dahlia


Dahlia
Photo Information
Copyright: Balwant Thanki (BT123) Silver Star Critiquer/Silver Note Writer [C: 38 W: 1 N: 43] (331)
Genre: Places
Medium: Color
Date Taken: 2008-07-06
Categories: Nature
Exposure: f/4, 1/50 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2008-07-06 11:05
Viewed: 177
Points: 10
[Note Guidelines] Photographer's Note
Dahlia
From Wikipedia, the free encyclopedia

Dahlia 'Dahlstar Sunset Pink'
Scientific classification
Kingdom: Plantae

Division: Magnoliophyta

Class: Magnoliopsida

Order: Asterales

Family: Asteraceae

Genus: Dahlia


Species
30 species, 20,000 cultivars


Dahlia is a genus of bushy, tuberous, perennial plants native to Mexico, Central America, and Colombia. There at least 36 species of Dahlia. Dahlia hybrids are commonly grown as garden plants. The Aztecs gathered and cultivated the dahlia for food, ceremony, as well as decorative purposes [1], and the long woody stem of one variety was used for small pipes.

In 1872 a box of Dahlia roots were sent from Mexico to the Netherlands. Only one plant survived the trip, but produced spectacular red flowers with pointed petals. Nurserymen in Europe bred from this plant, which was named Dahlia juarezii with parents of Dahlias discovered earlier and these are the progenitors of all modern Dahlia hybrids. Ever since, plant breeders have been breeding Dahlias to produce thousands of cultivars, usually chosen for their stunning and brightly coloured flowers. Dahlia plants range in height from as low as 12" (30cm) to as tall as 6-8 feet (180-240cm). The flowers can be as small as 2" (5 cm) or up to a foot (30 cm) in diameter. The great variety results from Dahlias being octoploids (they have eight sets of homologous chromosomes, whereas most plants have only two).

Dahlias are used as food plants by the larvae of some Lepidoptera species including Angle Shades, Common Swift, Ghost Moth and Large Yellow Underwing.

The dahlia is named after Swedish 18th-century botanist Anders Dahl. Until recently they were also named in Germany as "georgine" by the botanist Carl Ludwig Willdenow, after the naturalist Johann Gottlieb Georgi of St. Petersburg.
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Discussions
ThreadThread Starter Messages Updated
To thegraduate: HiBT123 1 07-07 05:46
To thegraduate: Your commentsBT123 1 07-07 01:56
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Critiques [Translate]

Balwant,
This is a very beautiful image, offset with the yet unopened pods fading into the background. Good use of narrow DOF.
Rick

good image but it would prefer the focus to be at the front of the flower or on the top bud. the point of focus seems to be falling off the bottom of the photo.

very nice shot Balwant, beautiful colour very sharp.
I hope you don't mind me saying, I think it is better for the bloom to be facing into the frame not out of it.

Regards
Gil

Hello Balwant,
Nice macro, good sharpness and lovely colours.
I must agree with Gil's opinion about 'the facing of the flower'.
Greetings,
Henri

  • Great 
  • foozi Gold Star Critiquer/Gold Note Writer [C: 186 W: 0 N: 272] (1276)
  • [2008-08-18 19:52]

Hello Balwant,
a lovely bright and striking rendition you have here. Great sharpness and details well seen. Great composition and well planned shot.

Regards,
Foozi

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