Hydrangea family
Hydrangeaceae

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Hydrangea family🌸

Hydrangeaceae

アジサイ科

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A family including hydrangeas and Deutzia. The center of diversity is in East Asia. Transferred from Scrophulariales to Cornales under the APG system. Distinguished by ornamental sterile flowers with enlarged sepals.

Key Characteristics

  • ●Ornamental sterile flowers with enlarged, showy sepals
  • ●Flower color changes with soil pH in some species
  • ●Deciduous shrubs to trees
  • ●Opposite leaves

Morphological Traits

A family may include species with different trait values — multiple values indicate the range within the family.

Leaf arrangement

Alternate / Opposite

Leaf type

Simple

Venation

Pinnate / Palmate

Leaf margin

Serrate / Dentate / Entire

Growth form

Shrub / Herb / Vine

Evergreen/Deciduous

Evergreen / Deciduous

Leaf dissection

Dissected / Undivided

Stipules

Absent

Flower symmetry

Actinomorphic

Petal count

Many

Ovary position

Inferior / Half-inferior

Stamen count

3-4 / 5

Plant sex

Dioecious / Hermaphrodite

Phylogenetic Position

Angiosperms > Eudicots > Cornales > Hydrangeaceae

Divergence Era

Late Cretaceous to Paleogene

Representative Genera

アジサイ属（Hydrangea）ウツギ属（Deutzia）

Related Evolution Events

  • ・Improved pollination efficiency through ornamental sterile flowers
View on evolution timeline →

Plants in Hydrangea family on this site

HydrangeaFuzzy DeutziaPride-of-Rochester
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