Erigeron bonariensis

Ssp. Conyza bonariensis


Hairy fleabane                                                                                     Μη διαθέσιμη


Compositae - daisy family                                                                                 Dicot.

 
 



Erigeron bonariensis, an invasive weed thought to have originated in Buenos Aries has invaded every continent except Antartica. It is a difficult to control weed of arable crops including wheat and is resistant to most herbicides. E. bonariensis prefers hot dry conditions and has become a noxious weed in Portugal and has even naturalised in Belgium.

It is a member of the daisy family but the mature flowers look more like flower buds, with green cups enclosing tiny yellow florets. They become more obvious as the fruits develop forming small "dandelion clocks" . The feathery bristles carry the seeds over a wide area. On Skopelos the weed is found only on waste ground and road verges.


For more on Greek Alien Invaders go to Caprobrotus Edulis....

 

7-9mm,  20-60cm , W                                    JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

Eryngium campestre
Field eryngoEryngium_campestre.html
Erigeron bonariensis
Hairy fleebane