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Rose family (Rosaceae)

Rose family

 

The Rose family - rosaceae - comprises about 3000 species of plants mainly spread in temperate countries. They are herbs, trees, shrubs and climbing plants. some of them are very important as edible fruit trees (Almonds, cherries, apples, pears, etc.) or as cultivated flowers (roses, for example)

rose draw

Leaves (1): Generally alternate, composite or simple with stipules.

Stems (2): Very changing .Erect or climbing. Ligneous or herbaceous.

Flowers: (3)

Regular, generally with 5 segments in each verticil. In some genera 4.

Calyx: 5 free sepals

rose draw

 

rose draw

Corolla: 5 free petals.

Stamens: Many

Ovary: Inferior o semi inferior

Carpels: Many
Fruit:

Drupes (4), poms (5) and achenes (6)
rose draw


Genera

The most important ones are the following:

AGRIMONIA
ALCHEMILLA
AMELANCHIER
APHANES
ARUNCUS
COTONEASTER
CRATAEGUS
CYDONIA
DRYAS
ERIOBOTRYA
FILIPENDULA
FRAGARIA
GEUM
MALUS
MESPILUS
POTENTILLA
PRUNUS
PYRACANTHA
PYRUS
ROSA
RUBUS
SANGUISORBA
SIBBALDIA
SORBUS
SPIRAEA

 

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