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Centaurea solstitialis


Centaurea solstitialis
Photo Information
Copyright: TOMESCU Cezar Valentin (tomcezar) Gold Star Critiquer/Gold Note Writer [C: 190 W: 0 N: 282] (1823)
Genre: Plants
Medium: Color
Date Taken: 2008-07-21
Categories: Flowers
Camera: Canon 350 D, Canon ZOOM LENS EF-S 18-55mm 1:3.5-5,6II
Exposure: f/7.1, 1/1000 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2008-08-05 3:53
Viewed: 3212
Favorites: 1 [view]
Points: 2
[Note Guidelines] Photographer's Note
Kingdom: Plantae

Division: Magnoliophyta

Class: Magnoliopsida

Order: Asterales

Family: Asteraceae

Tribe: Cynareae

Genus: Centaurea

Species: C. solstitialis

Yellow Starthistle (Centaurea Solstitialis) is a member of the Asteraceae family, native to the Mediterranean region. The plant, also known as golden starthistle, yellow cockspur, and St. Barnaby’s thistle[1] is a thorny winter annual in the knapweed genus.

It is a grayish-green plant with multiple rigid stems that extend in all directions from the base, forming a bushy-looking cluster that can reach two meters in height and more than that in diameter. It produces bright yellow flowers ringed with long, sharp spines. The plant grows quickly and is very competitive. It bears a taproot that can reach a meter deep into the soil, allowing it to thrive during dry, hot summers. It is versatile in its growth patterns, and can adapt to drought or low soil moisture content by producing smaller plants with fewer seeds during dry years.

http://en.wikipedia.org/wiki/Centaurea_solstitialis

This picture is a crop.

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Critiques [Translate]

Bonjour Cezar,
Il me semble que ta publication manque de contraste, ou du moins s'oppose mal à l'arrière plan, et c'est domage car le sujet est finement détaillé et agréablement coloré.
A bientôt sur TN pour de nouvelles aventures.
Gérard

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