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The Buttercup family - ranunculaceae - comprises about 2000 species of plants mainly spread in temperate countries. Most of them are herbs and lianas having big flowers, so they are very valuable in gardening. They are also very well known because many of them are poisonous plants.

Ranunculus asiaticus

Leaves ( 1 ) : Generally alternate and divided; some genera such as clematis are opposite.(2)
Stems ( 3 ): In most of the cases they are herbaceous. In clematis , ligneous.

Clematis alpina

Flowers :(4)

Very changing..
Calyx : 5 sepals- clematis has four (5) . Sometimes sepals are colored, reminding petals. Some genera - hepatica, for example- have bracts under the sepals very similar to a calyx.
Corolla : 5 petals. Under them some species have nectar glands which in cases as aquilegia (6) o Delphinium (7) extend themselves behind the petals like horns.

Aquilegia vulgaris

Delphinium nudicale

 
 
Stamens: Numerous.
Ovary : Superior.
Carpels : Numerous.
   
Fruit:

Follicles(8) and achenes.

Helleborus foetidus


GENERA

The most important ones are the following:

ACTAEA
ACONITUM
ADONIS
ANEMONE
AQUILEGIA
CALLIANTHEMUM
CALTHA
CERATOCEPHALUS
CLEMATIS
CONSOLIDA
DELPHINIUM
GARIDELLA

HELLEBORUS
HEPATICA
ISOPYRUM
MYOSORUS
NIGELLA
PULSATILLA
RANUNCULUS
THALICTRUM
TROLLIUS

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