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Comments

provided by eFloras
Eight varieties may be recognized in China. In addition, Spiraea japonica var. stellaris Rehder (in Sargent, Pl. Wilson. 1: 452. 1913) was described on the basis of a fruiting specimen (A. Henry 9280) from SE Yunnan (Mengzi Xian).
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 9: 51 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of China @ eFloras.org
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Wu Zhengyi, Peter H. Raven & Hong Deyuan
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Description

provided by eFloras
Shrubs erect, to 1.5 m tall. Branchlets brownish to purple-brown, slender, subterete, glabrous or pubescent when young; buds ovoid, 3–5 mm, with several scales, puberulous, apex acute. Petiole 1–3 mm, pubescent; leaf blade abaxially paler or glaucous pruinose, adaxially dark green, ovate or ovate-elliptic to lanceolate or oblong-lanceolate, 2–16 × 1–4 cm, abaxially usually pubescent on veins, adaxially glabrous or puberulous on veins, base cuneate to rounded, margin crenate to doubly serrate, rarely singly serrate, apex obtuse or acute to acuminate. Corymbs terminal on erect, long, leafy shoots of current year, compound, 6–14 × 2.5–14 cm, many flowered; rachis and pedicels densely pubescent; pedicels 4–6 mm; bracts lanceolate to linear-lanceolate, sometimes to 1 cm, abaxially puberulous. Flowers 4–7 mm. Hypanthium campanulate, sparsely pubescent abaxially. Sepals triangular, 1.5–2 mm, erect in fruit, apex acute. Petals usually pink, sometimes white, ovate to orbicular, 2.5–3.5 × 2–3 mm, apex obtuse. Stamens 25–30, much longer than petals. Disk annular, irregularly crenulate. Follicles divergent, glabrous or pilose on adaxial suture; styles ascending. Fl. Jun–Jul, fr. Aug–Sep.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 9: 51 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
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eFloras

Distribution

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Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Sichuan, Xizang, Yunnan, Zhejiang [Japan, Korea].
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 9: 51 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
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eFloras

Habitat

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Forests, forested slopes, forest clearings, thickets, grassy slopes, mountain valleys, gullies, river banks, alpine steppes, rocky and stony places also commonly cultivated; 700--4000 m.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 9: 51 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
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eFloras

Comprehensive Description

provided by North American Flora
Spiraea japonica ly. f. Suppl. 262. 1781
spiraea callosa Thunb. Fl. Jap. 209. 1784. Spiraea Fortunei Planch. Fl. Serres 9 : 35. 1853.
A shrub, 8-15 dm. high, erect; bark of the twigs purplish-brown, finely villous when young ; petioles very short, 2-7 mm. long ; leaf-blades ovate or lanceolate, 5-10 cm. long, 2-4 cm. wide, glabrous above, more or less pubescent beneath, sharply and usually doubly serrate from near the base, acute or acuminate ; inflorescence a compound corymb, mostly flat-topped, 5-15 cm. wide, finely villous ; hypanthium turbinate, 1 m. high, pubescent ; sepals triangular, 1 mm. long, in age more or less reflexed ; petals pink or rose, roundedobovate, 3 mm. long ; disk weakly developed ; follicles erect or nearly so, glabrous.
Type locality : Japan .
Distribution : Native of Japan ; often cultivated and escaped ; established at several stations from Connecticut to Pennsylvania.
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bibliographic citation
Frederick Vernon Coville, Nathaniel Lord Britton, Henry Allan Gleason, John Kunkel Small, Charles Louis Pollard, Per Axel Rydberg. 1908. GROSSULARIACEAE, PLATANACEAE, CROSSOSOMATACEAE, CONNARACEAE, CALYCANTHACEAE, and ROSACEAE (pars). North American flora. vol 22(3). New York Botanical Garden, New York, NY
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Spiraea japonica

provided by wikipedia EN

Spiraea japonica, the Japanese meadowsweet[1] or Japanese spiraea,[2] is a plant in the family Rosaceae.[3]

Synonyms for the species name are Spiraea bumalda Burv. and Spiraea japonica var. alpina Maxim.[4]

Description

Spiraea japonica is one of several Spiraea shrubs with alternate, simple leaves, on wiry, freely branching, erect stems. The stems are brown to reddish-brown, round in cross-section and sometimes hairy. The shrub reaches 1.2 m to almost 2 m in height and about the same in width. The deciduous leaves are generally an ovate shape about 2.5 cm to 7.5 cm long, have toothed margins, and alternate along the stem. Clusters of rosy-pink flowers are found at the tips of the branches. The seeds measure about 2.5 mm in length and are found in small lustrous capsules.[4]

It is naturally variable in form and there are many varieties of it in the horticulture trade. So far, nine varieties have been described within the species.[4]

Distribution

Flower of Japanese spiraea in Japan
Spiraea japonica 'Goldflame' - habit

Spiraea japonica is a deciduous, perennial shrub native to Japan, China, and Korea. Southwest China is the center for biodiversity of the species.[4] It is naturalized throughout much of the Northeast, Southeast, and Midwest areas of the United States, and parts of Canada.[5]

Habitat

A common habitat for S. japonica in general seems to be in riparian areas, bogs, or other wetland habitats. It is found growing along streams, rivers, forest edges, roadsides, successional fields, and power line right-of-ways. It prefers full sun, but can tolerate partial shade. It prefers much water during the growing season; however, it cannot tolerate saturated soils for extended periods of time. It prefers a rich, moist loam, but it can grow in a wide variety of soils, including those on the alkaline side.[4]

Uses

Spiraea japonica was introduced in North America as an ornamental landscape plant and first cultivated in the northeastern states around 1870.[5]

Numerous cultivars have been selected for garden use. The tall forms may be grown as hedges, low screens, or foundation shrubs. The low-growing forms can be used as groundcover or in borders. In the UK, the following cultivars have gained the Royal Horticultural Society's Award of Garden Merit:-[6]

  • 'Candlelight'[7]
  • 'Dart's Red'[8]
  • Golden Princess = ‘Lisp’[9]
  • Magic Carpet = ‘Walbuma’[10]
  • 'Nana'[11]

S. japonica has been used as traditional medicine by native people, and extracts from the plants were found to be bioactive.[4]

References

  1. ^ USDA, NRCS (n.d.). "Spiraea japonica". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 27 November 2015.
  2. ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  3. ^ "Spiraea japonica". floridata.com. Retrieved 2008-10-08.
  4. ^ a b c d e f "Spiraea japonica (shrub)". Invasive Species Specialist Group. Retrieved 2008-10-08.
  5. ^ a b "Japanese spiraea". National Park Service. Retrieved 2008-10-08.
  6. ^ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 99. Retrieved 1 November 2018.
  7. ^ "RHS Plant Selector - Spiraea japonica 'Candlelight'". Retrieved 5 March 2021.
  8. ^ "RHS Plant Selector - Spiraea japonica 'Dart's Red'". Retrieved 5 March 2021.
  9. ^ "RHS Plant Selector - Spiraea japonica Golden Princess 'Lisp'". Retrieved 5 March 2021.
  10. ^ "RHS Plant Selector - Spiraea japonica Magic Carpet 'Walbuma'". Retrieved 5 March 2021.
  11. ^ "RHS Plant Selector - Spiraea japonica 'Nana'". Retrieved 5 March 2021.

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Wikipedia authors and editors
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wikipedia EN

Spiraea japonica: Brief Summary

provided by wikipedia EN

Spiraea japonica, the Japanese meadowsweet or Japanese spiraea, is a plant in the family Rosaceae.

Synonyms for the species name are Spiraea bumalda Burv. and Spiraea japonica var. alpina Maxim.

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Wikipedia authors and editors
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wikipedia EN