BEGGARTICKS

Bidens frondosa

Daisy & Dandelion Family [Asteraceae]

month8jul month8july month8aug month8sep month8sept month8oct

status
statusZneophyte
 
flower
flower8yellow
 
petals
petalsZ0
(5)
type
typeZclustered
 
stem
stem8round
 
stem
stem8ribbed
 

Photo: © RWD


Photo: © RWD


Photo: © RWD


Photo: © RWD


Photo: © RWD


Photo: © RWD


Photo: © RWD



Not to be semantically confused with : Branched Bur-Reed or Un-branched Bur-Reed [plants with similar name from a different family]

Easily mistaken for : Trifid Bur-Marigold (Bidens tripartita) - which has leaves with winged stalks, but the only true way to tell most of the Bur-marigolds apart is by close inspection of the seeds, which differ between species. The seeds of Beggarticks have a rough surface, those of Trifid Bur-Marigold a smooth surface. Sorry - no photos of seeds yet.

Some similarities to other Bur-marigolds such as :

  • Nodding Bur-Marigold (Bidens cernua) - but that has larger and broader flowers which are drooping, facing groundwards
  • London Bur-Marigold (Bidens connata) - but that has leaves that are not pinnately triplet and leaves much less toothed or not toothed
  • Trifid Bur-Marigold (Bidens tripartita but that has leaves that may be lobed rather than fully tri-leaf pinnate and has leaves that are winged to the junction with the branch.
The most reliable way to differentiate the Bidens genera from one another is by looking at the shape of one individual achene (seed) as seen from the side. Unfortunately, your Author has no photographs (yet).

It seems to have got the name 'Beggarticks' because the seeds are black and shaped a bit like ticks that beggars may carry. They are indeed most unusual seeds being flat and rectangular-shaped with two prongs emerging from the corners of one narrow side, projecting forwards. (Sorry - no photos yet).


  Bidens frondosa  ⇐ Global Aspect ⇒ Asteraceae  

Distribution
 family8Daisy & Dandelion family8Asteraceae

 BSBI maps
genus8Bidens
Bidens
(Bur-Marigolds)

BEGGARTICKS

Bidens frondosa

Daisy & Dandelion Family [Asteraceae]