|
|
|
Centaurea solstitialis
 |
|
| [Ligne directrice - Note] Note du photographe |
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. |
weeksy, Pitoncle trouve(nt) cette note utile
Only registered TrekNature members may rate photo notes. |
|
|
| Discussions |
| Aucune | | Vous devez vous authentifier pour démarrer une discussion. |
|
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
![Gold Star Critiquer/Gold Note Writer [C: 503 W: 0 N: 400]](http://i1.treknature.com/misc/g-n-g.gif)
(2328)