Pictorial guide to the flora of the British Isles

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Dahlia × hortensis Guillaumin

dahlia (Asteraceae / Compositae)

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Dahlia × hortensis is a popular garden plant; the colours of its ligules vary widely among the many cultivars.

Oxford (VC23: Oxfordshire); 2015-06-15

 dahlia / Dahlia × hortensis: _Dahlia_ × _hortensis_ is a popular garden plant; the colours of its ligules vary widely among the many cultivars.

There are two types of bract in Dahlia × hortensis: a row of large, green patent ones at the base of the inflorescence, and a row of thinner, coloured ones above.

Oxford (VC23: Oxfordshire); 2015-06-15

 dahlia / Dahlia × hortensis: There are two types of bract in _Dahlia_ × _hortensis_: a row of large, green patent ones at the base of the inflorescence, and a row of thinner, coloured ones above.

Many varieties are flore pleno.

Oxford (VC23: Oxfordshire); 2015-06-26

 dahlia / Dahlia × hortensis: Many varieties are <em>flore pleno</em>.

All images copyright © Christopher J. Dixon unless otherwise indicated.

L-R: Bidens tripartita, Melilotus officinalis, Mimulus guttatus, Thalictrum flavum, Ranunculus peltatus, Anchusa arvensis, Malva alcea, Lolium perenne