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Centaurea calcitrapa

Centaurea calcitrapa
著作權:philippe hornus (amanengone) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 188 W: 54 N: 412] (2113)
相機:Olympus OM D EM1, Zuiko 40-150 3,5-4,5
Exposure:f/13.0, 1/500 seconds
More Photo Info:[view]
Photo Version:Original Version
提交日期:2016-12-14 17:46
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The topic

Centaurea calcitrapa ((Linnaeus, 1753)

This floral species os often known as red star-thistle or purple starthistle. It is a very common plant in Europe.

Phyllogenetic classification (According Tolweb and Classification phylog矇n矇tique du vivant in Lecointre & Le Guyader 2016 edition)

Biota / Eukaryotes / Archaeplastida (Plantae) / Plasmodesmophytes / Green plants / Metabiontes / Chlorobiontes / Streptophyta / Phragmoplastophytes / Plasmodemophytes / Parenchymophytes / Embryophytes / Stomatophytes / Hemitracheophytes / Polysporangiophytes / Euphyllophytes / Spermatopsida /Angiosperms / 色色色/ 色色色 / 色色. / Eudicots / 色色色色 / 色色色色 / Core Eudicots / 色色色色 / Asterids / Euasterids / Campanulids / 色色色.. / Asterales / Asteraceae / Carduoideae / Cardueae / Carduinae / Centaurinae / 色色色/ 色色色 / 色色. / Centaurea / Centaurea calcitrapa

A few information on the plant

Characters of this plant:

Biannual or annual plant, thorny, size around one meter plus
Grooved and hairless stem is upright ; it is extremely ramified
Cauline leaves are pinnatisected ; ramifications quite linear
Strong root system allowing the plant to survive from one year to another and to accept very dry condition all along his life
Spiny involucre with basal spinlets
White to purple capitulate of flowers
Florets linked in capitulum, actinomorphic with five petals
Calyx from the peripheral florets more or less asymmetric with five petals, the external one greater
Extremely profuse plant, without any IUCN status.



o Carl von Linnaeus - Species Plantarum - The starting point for the naming of plants
o French Wikipedia for Centaurea calcitrapa
o English Wikipedia for Centaurea calcitrapa
o Deutsh Wikipedia for Centaurea calcitrapa
o French database on botanic (strongly comprehensive) - Centaurea calcitrapa
o Database from the French National Museum of Paris - for Centaurea calcitrapa
o Database Tropicos from the Missouri Botanical Garden
o Between sea, stream and earth, the 竄 Domaine de la Palissade 罈 - A conservatory area of interest

Further readings

o Flore compl癡te portative de la France, de la Suisse et de la Belgique by Gaston Bonnier and Georges de Layens Scanned document of the 竄 Real Jardin Botnico 罈 in Madrid
o Grande flore en couleur by Gaston Bonnier and Georges de Layens Scanned document of the 竄 Real Jardin Botnico 罈 in Madrid
o o Flore descriptive et illustr矇e de la France, de la Corse et des contr矇es limitrophes by Hippolyte-Jacques Coste (Abb矇) Scanned document of the 竄 Real Jardin Botnico 罈 in Madrid
o Flore des champs cultiv矇s Philippe Jauzein Quae 矇dition
o Botanique syst矇matique et appliqu矇e des plantes fleurs Michel Botineau Lavoisier 矇ditions
o Pr矇cis de Sciences Biologiques Botanique P.P.Grass矇 et autres
o Classification phylog矇n矇tique du vivant G.Lecointre et H.Le Guyader Tomes 1 et 2 Belin 矇diteur


Date of shooting 12/08/2015 13:49:50
Place of shooting R矇serve de biodiversit矇 Domaine de la Palissade - France
Latitude 43.37587 N
Longitude 04.81053 E


o Objectif ZUIKO MinFocalLength 40 MaxFocalLength 150 Aperture 1: 2,8 - 3,5

Picture Specifications

o ImageWidth 4640
o ImageLength 3472
o BitsPerSample 16
o Compression Uncompressed
o Orientation Horizontal

Shooting conditions

o Light source Auto
o Metering mode Multi segment
o Picture mode Vivid
o Exposure mode Aperture priority
o Focus mode Manual
o Focus process AF used
o Aperture f/13
o ExposureTime 1/500
o ISO Speed Rating 500
o FocalLength 150
o White Balance Temp Auto
o Noise Reduction 0
o Shading Compensation off
o Contrast normal
o Saturation normal
o Sharpness normal
o Mode image Natural

Raw treatement

Formation au post-traitement num矇rique - A voir

Developpment of the raw file Olympus (*.orf) with DxO OpticsPro 11


o White Balance Temperature 4903 K Teinte 0
o Colours Accentuation vibrance 0 saturation 0
o Colours rebdering Referenced camera - Intensity 100 Saturated colours protection 20
o TSL none


o Compensation exposition none
o DxO smart lighting light Intensity 25
o Tonalit矇 s矇lective none
o DxO clear view none
o Contraste none
o Courbe des tons none
o Vignetage Auto, bas矇 sur module optique d矇cel矇 Intensit矇 100 Pr矇servation 50


o Noise reduction prime luminance 40 chrominance 100 Basse fr矇quence 75 Pixel
Morts 24
o Nettet矇 de loptique Globale 0.00 D矇tails 50 Bokeh 50
o Aberration chromatique Auto Lat矇rales Intensit矇 100 Taille 6 Franges violettes OK
o Masque de nettet矇 Intensit矇 100 Rayon 0.50 Seuil 4 Bords 0


o Horizon 0.00簞
o Recadrage Manuel, sans contrainte Rapport tailles 4/3
o Recroping area of 4608 x 3456 px off 4608 x 3456 px

Post treatment

Tif file edition corel paintshop pro
Re cropping area of 1575 x 1575 px off 4608 x 3456 px
Sharpness improvement
Improvement of the contrast
Re sizing compatible with Treknature (max 800x800 maximum size 300K)
Publication jpg compression mode : normal - intensity 10 mode YCbCr 1x1 1x1 1x1

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Critiques [Translate]

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2736 W: 280 N: 4915] (19851)
  • [2016-12-15 18:09]

Hello Philippe,
What a neat close-up of this beautiful bloom. Sharply focused giving us a great look at its intricate features. I love the bright cheerful colors and the overall composition. Plenty of DOF and just the right amount of exposure.

  • Great 
  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6063 W: 89 N: 15165] (63521)
  • [2016-12-16 14:12]

Salut Philippe,absolument magnifique cette prise de vue qui regarde dans le coeur du fleurs,details et couleurs de haut niveay,super! Bon WE et merci,Luciano

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