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(spīrē`ə), any plant of the genus Spiraea, Northern Hemisphere deciduous shrubs of the family Rosaceae (roserose,
common name for some members of the Rosaceae, a large family of herbs, shrubs, and trees distributed over most of the earth, and for plants of the genus Rosa, the true roses.
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 family). Most are indigenous to central and E Asia, whence come most of the popular ornamental species, e.g., the bridal wreath (S. x prunifolia), native to Japan, and its similar hybrid S. vanhouttei. In these species the fragrant, spirelike flower clusters typical of the genus are borne on long, arching branches. Spiraeas native to North America include the hardhack, or steeplebush (S. tomentosa), a local source of astringent and tonic, and the meadowsweets (several species). The name meadowsweet is also applied to the related genus Filipendula, tall, hardy perennials (also often cultivated) formerly classified as Spiraea because of the similar showy blossoms. Filipendula includes the Eurasian dropwort (F. hexapetala), the queen of the meadow (F. ulmaria), now naturalized in the United States, and the North American queen of the prairie (F. rubra). Spiraeas are classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Magnoliopsida, order Rosales, family Rosaceae.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(spirea), a genus of plants of the family Rosaceae. The plants are deciduous shrubs measuring 0.5–3 m tall. The alternate and simple leaves are usually dentate or serrate. The flowers, which are gathered in cymose, umbellate, or panicled inflorescences, are bisexual and have numerous stamens. The fruit is a follicle with tiny flat seeds.

There are about 100 species of spiraea, occurring in the northern hemisphere, mainly in the temperate zone. About 25 species are found in the USSR. The species S. media, which has smooth-margined or dentate leaves at the apex and white flowers in cymose inflorescences, grows in the northeastern part of the European USSR, in Southern Siberia, and in the Far East. It grows as part of the underbrush of arid forests and forms a dense cover on open slopes. S. salicifolia, which has sharply dentate leaves and pink flowers in pyramidal panicles, grows in Siberia and the Far East along riverbanks and in meadows and bogs. Both 5. media and S. salicifolia are ornamental shrubs commonly found in gardens and parks. Many other species and hybrids are cultivated as ornamentals.


Derev’ia i kustamiki SSSR, vol. 3. Moscow-Leningrad, 1954.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


(esp US), spirea
any rosaceous plant of the genus Spiraea, having sprays of small white or pink flowers
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
"And we are no strangers to this type of high-barrier-to-entry product development act," Spireas says.
Sigmapharm's principal scientific team consists mostly of Spireas" former students and collaborators, who joined him after working for such companies as Pfizer, Perrigo, URL Pharma, Teva and Bausch + Lomb, collectively bringing over 100 years of experience, innovation and expertise with them to Sigmapharm.
Spirea japonica Shibon provides a special treat - red, pink and white flowers throughout the summer on a 2-foot-tall and broad plant.
On his 2007 and 2008 tax returns, Spireas reported royalties received under the 1998 license agreement as long-term capital gain.
Spireas argued that the March 2000 engagement letter for two particular formulations using the technology was in effect its own license agreement, under which Hygrosol transferred all substantial rights to those two products.
Sorbarias (Sorbaria) are often called false spireas. Ural false spiraea (S.
The sub-families are the spirea group (Spiraeoideae), apple group (Pomoideae), rose group (Rosoideae), and the cherry group (Prunoideae).
LANDSCAPE NOTES: Anthony Waterer Spirea is one of the most popular Dwarf Spireas.
LANDSCAPE NOTES: Limemound Spirea has excellent foliage and uniform growth habit.
Bridalwreath Spirea introduced homeowners to an open-branching, 8- to 10-foot tall arching shrub that bloomed reliably in May.
In short, he was talking about the shrub spirea being one of the most overused plants in American gardens.
Members of the genus spirea have always been a welcome addition to my landscape designs.