February 1, 2023

Hydrangeaceae or the Hydrangea Family of plants is from the order of Cornales. This family includes about 19 genera and 260 species. Members of this family are woody ornamental trees, vines, shrubs, and herbs. They range mostly from the northern temperate locations plus tropical and sub-tropical.

The members usually have opposite pairs of leaves and flowers with four to five petals (sometimes 5 or more) and 4 to 10 sepals. Flowers are usually bisexual. They usually have 4 to many stamens. They are usually in clusters. The fruits are capsules or berries. The fruits usually have several seeds. The seeds are usually winged.

Other synonyms for the family include Philadelphaceae and Kirengeshomaceae.

The genera in Hydrangeaceae family include:

Adamia
Broussaisia
Cardiandra
Carpenteria
Cornidia
Cyanitis
Decumaria
Deinanthe
Deutzia
Dichroa
Edwinia
Fendlera
Fendlerella
Hortensia
Hydrangea
Jamesia
Kirengeshoma
Neodeutzia
Philadelphus
Pileostegia
Platycrater
Schizophragma
Whipplea

Hydrangea arborescens
Hydrangea arborescens
Hydrangea serrata 'Preziosa' © onlineflowergarden.com
Hydrangea serrata ‘Preziosa’ at Kew Garden
Deutzia scabra 'Candidissima'
Deutzia scabra ‘Candidissima’
Philadelphus lewisii
Philadelphus lewisii

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