Exochorda racemosa

Exochorda racemosa
	Flowers of E. racemosa in Japan.
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Rosales
Family:	Rosaceae
Genus:	Exochorda
Species:	E. racemosa
Binomial name
	Exochorda racemosa; (Lindl.) Rehder
Synonyms[1]
	Exochorda racemosa subsp. racemosa; Exochorda racemosa subsp. giraldii; Amelanchier racemosa;

Exochorda racemosa, pearlbush or common pearlbush, is a species of plant in the rose family. This species is mostly found in China and Japan.[2]

Taxonomy and etymology

Exochorda racemosa was first described by John Lindley. It is placed in the genus Exochorda and family Rosaceae, the rose family.[3] The plant gets its common name, "common pearlbush", from its pearl-looking flowers.[4]

Description

The foliage of E. racemosa.

A loose, irregular or vase-shaped and upright shrub, this species is deciduous. It has oblong leaves, about 4–6 cm (1.6–2.4 in) long and 1–2 cm (0.39–0.79 in) wide, that are rounded and toothed at the margin on the top. The flowers are white, and flower in late April to early May.[5] The flowers have round petals, 12-25 stamens, borne in racemes in groups of about six or ten. Their diameter is 4 cm (1.6 in).

Subspecies

Exochorda racemosa subsp. serratifolia (S.Moore) F.Y.Gao & Maesen – Korean pearl bush[6]

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References

"Exochorda racemosa". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 14 January 2018.
Ran Levy-Yamamori, Gerard Taaffe (2004). Garden plants of Japan. USA: Timber Press. p. 109. ISBN 0-88192-650-7.
William C. Welch; Greg Grant; Cynthia W. Mueller; Jason Powell. Heirloom gardening in the South : yesterday's plants for today's gardens (1st ed.). Texas A&M University Press. ISBN 978-1-60344-213-8.
Dirr, Michael (1997). Dirr's Hardy trees and shrubs: an illustrated encyclopedia (PDF). USA: Timber Press. p. 154. ISBN 0-88192-404-0. The expanding buds appear as small pearls - hence, the common name.
Kling, Gary J. "Exochorda racemosa Common pearlbush". University of Illinois. Woody Plants.
English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. 2015. p. 467. ISBN 978-89-97450-98-5. Archived from the original (PDF) on 25 May 2017. Retrieved 24 December 2016 – via Korea Forest Service.

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[grin-1] "Exochorda racemosa". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 14 January 2018.

[Levy-2] Ran Levy-Yamamori, Gerard Taaffe (2004). Garden plants of Japan. USA: Timber Press. p. 109. ISBN 0-88192-650-7.

[powell-3] William C. Welch; Greg Grant; Cynthia W. Mueller; Jason Powell. Heirloom gardening in the South : yesterday's plants for today's gardens (1st ed.). Texas A&M University Press. ISBN 978-1-60344-213-8.

[Dirr-4] Dirr, Michael (1997). Dirr's Hardy trees and shrubs: an illustrated encyclopedia (PDF). USA: Timber Press. p. 154. ISBN 0-88192-404-0. The expanding buds appear as small pearls - hence, the common name.

[Woody-5] Kling, Gary J. "Exochorda racemosa Common pearlbush". University of Illinois. Woody Plants.

[6] English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. 2015. p. 467. ISBN 978-89-97450-98-5. Archived from the original (PDF) on 25 May 2017. Retrieved 24 December 2016 – via Korea Forest Service.