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Mayweeds on seashore

29.07.2010 - 00:27 |  Looduskalender
Photo: Arne Ader
Translation: Liis
 
Scentless mayweed.
 
  Scentless mayweed
 
 Kesalill       Tripleurospermum inodorum  
 
The scentless mayweed is a common weed in fields; other related well-known species are the corn chamomile, the ox-eye daisy and also the scented or true chamomile. Scentless mayweeds flower now, and for a long time, on the seashore. Botanists count this mayweed that grows on shores as a separate species – sea mayweed (Tripleurospermum maritimum).
 

The scentless mayweed is an annual or a biennial and propagates by seeds. It has branched stems and flowers are borne on the main stem as well as side shoots. The flowering lasts long, until snow falls. The white tongue-shaped florets at the edge of the flowerhead are female flowers, the yellow tubular florets are bisexual. The many florets in the flowerhead result in astonishing numbers – from 50 000 up to 1,5 million seeds can be produced from one single plant.


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