![]() ![]() Acetylsalicylic acid was first isolated from Filipendula ulmaria, a species at the time classified in the genus Spiraea. ![]() Spiraea 'Arguta' (bridal wreath) and Spiraea × cinerea 'Grefsheim' have won the Royal Horticultural Society's Award of Garden Merit. The following species, hybrids and cultivars are among those found in cultivation: Some species bloom in the spring, others in midsummer. Many species of Spiraea are used as ornamental plants in temperate climates, particularly for their showy clusters of dense flowers. betulifolia are eaten by blue grouse in spring, and the plant is browsed by deer in summer. Spiraea species are used as food plants by the larvae of many Lepidoptera species, including the brown-tail, the small emperor moth, the grey dagger, the setaceous Hebrew character, and the moth Hypercompe indecisa. The flowers have five sepals and five white, pink, or reddish petals that are usually longer than the sepals. The radial symmetry of each flower is fivefold, with the flowers usually bisexual, rarely unisexual. The many small flowers of Spiraea shrubs are clustered together in inflorescences, usually in dense panicles, umbrella-like corymbs, or grape-like clusters. ![]() The leaf margins are usually toothed, occasionally cut or lobed, and rarely smooth. In most species, the leaves are lanceolate (narrowly oval) and about 2.5 to 10 centimetres (0.98 to 3.94 in) long. The leaves are simple and usually short stalked, and are arranged in a spiralling, alternate fashion. Spiraea plants are hardy, deciduous-leaved shrubs. The genus formerly included the herbaceous species now segregated into the genera Filipendula and Aruncus recent genetic evidence has shown that Filipendula is only distantly related to Spiraea, belonging in the subfamily Rosoideae.ĭescription Flower diagram of Spiraea hypericifolia Spiraea betulifolia Spiraea japonica 'Goldflame' 06 Spiraea betulifolia in autumn They are native to the temperate Northern Hemisphere, with the greatest diversity in eastern Asia. Spiraea / s p aɪ ˈ r iː ə/, sometimes spelled spirea in common names, and commonly known as meadowsweets or steeplebushes, is a genus of about 80 to 100 species of shrubs in the family Rosaceae. For British warships of the same name, see HMS Spiraea. ![]()
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