LONDON BUR-MARIGOLD

Bidens connata

Daisy & Dandelion Family [Asteraceae]

month8jul month8july month8aug month8sep month8sept month8oct

status
statusZneophyte
 
flower
flower8yellow
 
inner
inner8brown
 
morph
morph8actino
 
petals
petalsZ0 petalsZmany
(many)
type
typeZclustered
stem
stem8round
 

31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
A canalside plant spread by canal boats on the Grand Union.


31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
Leaves mostly un-toothed (although there are some that are).


31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
Unlike Nodding Bur-Marigold no flowerheads have any ray florets.


31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
Flowerheads smaller than those of Nodding Bur-Marigold and which do not droop or nod downwards.


31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
Directly below each flowerhead are only four to five long narrow bracts, rather than the six to eight of Nodding Bur-Marigold.


31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
Like Tansy the flowerheads consist only of disc florets.


31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
Flowerhead held erect.


31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
Yellow inner bracts surrounding the disc florets have dark stripes, like they do on Nodding Bur-Marigold.


31st Aug 2010, Hyde overflow, Peak Forest canal. Photo: © RWD
There are fewer disc florets than in Nodding Bur-Marigold, but these too have dark stripes on them. Note the tiny barbs on the disc florets, but most Bur-Marigolds have this feature.


Not to be semantically confused with : Branched Bur-Reed or Un-branched Bur-Reed nor with Burdocks such as Lesser Burdock (Arctium minus) nor with any of the Burnets such as Great Burnet (Sanguisorba officinalis) nor Bur Chervil (Anthriscus caucalis) or Pirri-pirri-bur (Acaena novae-zelandiae) [plants with similar names from different families]

No relation to : Branched Bur-Reed nor with Un-branched Bur-Reed. And although they are in the Same Daisy Family, neither are they related to Marigolds such as Common Marigold which is in a differing Genus. [plants with similar names]. [plants with similar names].

This is much less widespread than is Nodding Bur-Marigold but neither are ubiquitous. London Bur-Marigold has a presence on the Grand Union canal, and spread northwards up the canal from London. It is not found elsewhere.


  Bidens connata  ⇐ Global Aspect ⇒ Asteraceae  

Distribution
 family8Daisy & Dandelion family8Asteraceae

 BSBI maps
genus8Bidens
Bidens
(Bur-Marigolds)

LONDON BUR-MARIGOLD

Bidens connata

Daisy & Dandelion Family [Asteraceae]

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