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    Ambrosia coronopifolia  TORR. & GRAY    
 

Fam.: Asteraceae / Composite Fam.  

Synon.:  Ambrosia psilostachya  DC.

Genus:  Ambrosia  L.
 

Authors:
   TORR.:  John Torrey (1796 - 1873), chemist and botanist in USA
   GRAY:  Samuel Frederick Gray (1766 - 1828), British pharmacologist and botanist
   DC.:  Augustin-Pyrame de Candolle (1778 - 1841), Swiss botanist
   L.:  Carl von Linné (Linnaeus, 1707 - 1777), Swedish naturalist who introduced the binary naming system for plants and animals
 

Etymology:
   Ambrosia:   Greek plant name, from a brotos = immortal
   coronopifolia:   swine-cress-leaved
   psilostachya:   psilos = naked, stachys = ear
 

This species comes from America. Mainly in the region of Mannheim it found a new home. Since it is pollinated by the wind, it doesn't need colored petals to attract insects. Therefore it can hardly be recognized as a Composite. The male blossoms are sitting in the upper part at the stems. Of the female blossoms only the branches of the pistils are visible.

 

Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 28.8.2005
Fig. 1:  Ambrosia coronopifolia / Perennial Ragweed
D Mannheim-Rheinau 28.8.2005
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 28.8.2005
Fig. 2:  Ambrosia coronopifolia / Perennial Ragweed
D Mannheim-Rheinau 28.8.2005
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 31.7.2006
Fig. 3:  Ambrosia coronopifolia / Perennial Ragweed (♂)
D Mannheim-Rheinau 31.7.2006
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 1.9.2006
Fig. 4:  Ambrosia coronopifolia / Perennial Ragweed (♀)
D Mannheim-Rheinau 1.9.2006
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 18.9.2012
Fig. 5:  Ambrosia coronopifolia / Perennial Ragweed (♀)
D Mannheim-Rheinau 18.9.2012
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 18.9.2012
Fig. 6:  Ambrosia coronopifolia / Perennial Ragweed (♀)
D Mannheim-Rheinau 18.9.2012
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 19.5.2015
Fig. 7:  Ambrosia coronopifolia / Perennial Ragweed (young plant)
D Mannheim-Rheinau 19.5.2015
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 8.8.2017
Fig. 8:  Ambrosia coronopifolia / Perennial Ragweed
D Mannheim-Rheinau 8.8.2017
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 8.8.2017
Fig. 9:  Ambrosia coronopifolia / Perennial Ragweed
D Mannheim-Rheinau 8.8.2017
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 8.8.2017
Fig. 10:  Ambrosia coronopifolia / Perennial Ragweed
D Mannheim-Rheinau 8.8.2017
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 8.8.2017
Fig. 11:  Ambrosia coronopifolia / Perennial Ragweed
D Mannheim-Rheinau 8.8.2017
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 8.8.2017
Fig. 12:  Ambrosia coronopifolia / Perennial Ragweed
D Mannheim-Rheinau 8.8.2017
Ambrosia coronopifolia / Perennial Ragweed, D Mannheim-Rheinau 8.8.2017
Fig. 13:  Ambrosia coronopifolia / Perennial Ragweed
D Mannheim-Rheinau 8.8.2017

 


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