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Concept
Hydrangea hirta
Résumé
Hydrangea hirta, also known as the "nettle-leaved hydrangea", is a species of flowering plant in the family Hydrangeaceae that is native to East Asia. Due to the beauty and sturdiness of the species' flowers it can be found outside of its range being used for horticultural and landscaping purposes, and is found in gardens in countries including the United Kingdom and the United States.
Hydrangea is Greek in origin, and comes from Greek meaning "water" and meaning "vessel" describing to the shape of the cup shaped fruit and the capsule the fruit is contained in. The hirta portion of this species name means "hairy". Another name for this species is Hortensia hirta. Hortensia is a Latinised version of the French given name Hortense, referring to the wife of Jean-André Lepaute. In Japan the name for this species is meaning small hydrangea.
Natural hybrids between hydrangea species are rare, but these have been found in the Izu Peninsula of Japan between Hydrangea hirta and H. scadens.
A small deciduous shrub reaching 3 to 4 ft in height. The shrub grows numerous stems from the base, with a canopy consisting of a single uniform layer. The leaves on this shrub are deep toothed, and are covered in hairs. Hydrangea hirta has alternating leaves that are 5 to 8 cm long with an ovate shape that end in a pointed tip. Yellowing and dropping of the leaves commences in August. As the branches become older, the initially hairy branches become glabrous due to the loss of the hairs.
The flowers of this shrub grow in small clusters that are light blue to white in color. An individual flower of this species measures 5 mm in diameter with 5 petals and 10 stamens; this species lacks the ornamental bracts that many other hydrangea species possess. Each flower is fertile. The flower clusters contain a central stem bearing a single terminal flower that develops first, the other flowers in the cluster developing as terminal buds of lateral stems. The fruit contains urceolate seeds which swell in the middle and narrow at the top.
Source officielle
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