Deutzia

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Ordo: Cornales

Familia: Hydrangeaceae
Subfamilia: Hydrangeoideae
Tribus: Philadelpheae
Genus: Deutzia
Species: D. albida – D. aspera – D. baroniana – D. bomiensis – D. breviloba – D. calycosa – D. cinerascens – D. compacta – D. coreana – D. coriacea – D. corymbosa – D. crassidentata – D. crassifolia – D. crenata – D. cymuligera – D. discolor – D. esquirolii – D. faberi – D. glabrata – D. glauca – D. glaucophylla – D. glomeruliflora – D. gracilis – D. grandiflora – D. hamata – D. heterophylla – D. hookeriana – D. hypoglauca – D. longifolia – D. maximowicziana – D. mollis – D. monbeigii – D. muliensis – D. multiradiata – D. nanchuanensis – D. ningpoensis – D. obtusilobata – D. parviflora – D. pilosa – D. pulchra – D. purpurascens – D. rehderiana – D. rubens – D. scabra – D. schneideriana – D. setchuenensis – D. silvestrii – D. squamosa – D. staminea – D. subulata – D. taibaiensis – D. taiwanensis – D. uniflora – D. wardiana – D. yunnanensis – D. zhongdianensis
Nothospecies: D. × candelabrum – D. × candida – D. × carnea – D. × elegantissima – D. × hybrida – D. × kalmiiflora – D. × lemoinei – D. × magnifica – D. × maliflora – D. × myriantha – D. × rosea – D. × wilsonii
Name

Deutzia Thunb., Nov. Gen. Pl. 1:19. 1781.

Type species: Deutzia scabra Thunb.

Synonyms

Neodeutzia Small, N. Amer. Fl. 22(2):161-162. 1905.

Distribution
Native distribution areas:

Continental: Mexico & Asia
Assam, China North-Central, China South-Central, China Southeast, East Himalaya, Inner Mongolia, Japan, Khabarovsk, Korea, Manchuria, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southwest, Myanmar, Nansei-shoto, Nepal, Pakistan, Philippines, Primorye, Taiwan, Tibet, Vietnam, West Himalaya

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Thunberg, C.P. (ed.) 1781. Nova Genera Plantarum, quorum partem primam, suffrag. exper. Facult. med. upsal. publice ventilandam exhibent praeses Carol. P. Thunberg, ... et respondens Claudius Fr. Hornstedt, O-Gothus. In Audit. Gust. d. xxiv. nov. anno mdcclxxxi. Horis solitis. Upsaliae. 28 p. Upsaliae: Joh, Edman. Bayerische Staatsbibliothek DOI: 10.5962/bhl.title.88 (as Acta medicorum suecicorum 1: 207–234, tab. xvi. 1783.) Reference page. : 1: 19

Additional references

Govaerts, R.H.A. 2000. World Checklist of Seed Plants Database in ACCESS D: 1-30141. [unavailable to the public] Reference page.

Links

Govaerts, R. et al. 2021. Deutzia in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Oct 19. Reference page.
International Plant Names Index. 2021. Deutzia. Published online. Accessed: Oct 19 2021.
Tropicos.org 2021. Deutzia. Missouri Botanical Garden. Published on the internet. Accessed: 2021 Oct 19.
Hassler, M. 2021. Deutzia. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 Oct 19. Reference page.

Vernacular names
Deutsch: Deutzien
suomi: Nietospensaat
français: Deutzie
한국어: 말발도리속
Nederlands: Bruidsbloem
polski: Żylistek
русский: Дейция
svenska: Deutziasläktet
Türkçe: Havlupüskülü
中文（简体）: 溲疏属
中文（繁體）: 溲疏屬

Deutzia (/ˈdjuːtsiə/ or /ˈdɔɪtsiə/)[1] is a genus of about 60 species of flowering plants in the family Hydrangeaceae, native to eastern and central Asia (from the Himalayas east to Japan and the Philippines), and Central America and also Europe. By far the highest species diversity is in China, where 50 species occur.

The species are shrubs ranging from 1–4 m (3 ft 3 in–13 ft 1 in) in height. Most are deciduous, but a few subtropical species are evergreen. The leaves are opposite, simple, with a serrated margin. The flowers are produced in panicles or corymbs; they are white in most species, sometimes pink or reddish. The fruit is a dry capsule containing numerous small seeds. Identification of the species is very difficult, requiring often microscopic detail of the leaf hairs and seed capsule structure.

Deutzia is named after the 18th century Dutch patron of botany, Jan Deutz.

Selected species

Deutzia albida
Deutzia aspera
Deutzia baroniana
Deutzia bhutanensis
Deutzia bomiensis
Deutzia breviloba
Deutzia calycosa
Deutzia cinerascens
Deutzia compacta
Deutzia coreana
Deutzia coriacea
Deutzia corymbosa
Deutzia crassidentata
Deutzia crassifolia
Deutzia crenata - Crenate deutzia
Deutzia cymuligera
Deutzia discolor
Deutzia esquirolii
Deutzia faberi
Deutzia glabrata
Deutzia glauca
Deutzia glaucophylla
Deutzia globosa
Deutzia glomeruliflora
Deutzia gracilis - Slender deutzia
Deutzia grandiflora
Deutzia heterophylla
Deutzia hookeriana
Deutzia hypoglauca

Deutzia longifolia
Deutzia maximowicziana
Deutzia mollis
Deutzia monbeigii
Deutzia muliensis
Deutzia multiradiata
Deutzia nanchuanensis
Deutzia ningpoensis
Deutzia obtusilobata
Deutzia paniculata – Paniculate Korean deutzia[2]
Deutzia parviflora - Mongolian deutzia
Deutzia pilosa
Deutzia pulchra
Deutzia purpurascens
Deutzia reflexa
Deutzia rehderiana
Deutzia rubens
Deutzia scabra - Fuzzy deutzia
Deutzia schneideriana
Deutzia setchuenensis
Deutzia silvestrii
Deutzia squamosa
Deutzia staminea
Deutzia subulata
Deutzia taibaiensis
Deutzia taiwanensis
Deutzia taiwanensis
Deutzia uniflora – Korean deutzia[2]
Deutzia wardiana
Deutzia yunnanensis
Deutzia zhongdianensis

Cultivation and uses

The deutzias are fairly new to gardens: the exception, D. scabra, was noticed in Japanese gardens by Engelbert Kaempfer (1712) and Carl Peter Thunberg (1784) but not actually seen in Europe till the 1830s; two-thirds of the species noted in the R.H.S. Dictionary were gathered in from the wild during the 20th century.[3]

Deutzias are commonly grown as ornamental plants for their white and pink flowers. Many cultivars and hybrids have been selected for garden use, including selections with double flowers. For example, Deutzia × lemoinei is a hybrid of D. gracilis and D. parviflora. The following cultivars and hybrids have gained the Royal Horticultural Society's Award of Garden Merit:[4]-

Deutzia gracilis 'Nikko'[5]
Deutzia monbeigii[6]
Deutzia scabra ‘Candidissima’[7]
Deutzia scabra ‘Codsall Pink’[8]
Deutzia setchuenensis var. corymbiflora[9]
Deutzia × elegantissima 'Rosealind'[10]
Deutzia × hybrida ‘Contraste’[11]
Deutzia × hybrida 'Mont Rose'[12]
Deutzia × hybrida 'Strawberry Fields'[13]

The temperate deutzias are mostly hardy shrubs from far eastern regions where winters are dependably frozen; in milder climates, like much of England, the early-flowering species and hybrids are coaxed into premature bloom by mild spells, then spoilt by frost. Alice Coats[14] remarks that deutzias have done better in Edinburgh, on the chilly east coast of Scotland, than in London. A solution in milder climates might be to site deutzia in the garden's most exposed, coldest microclimate, as is often done with early-flowering magnolias.

Identification can be difficult, and in particular, many of the plants in cultivation sold as D. scabra are actually D. crenata (Huxley 1992). The selected hybrid white double "Pride-of-Rochester", already in cultivation in 1881, was originated by the Rochester, New York nurserymen Ellwanger and Barry.[14]

Deutzia scabra is used by joiners in Japan to polish wood.[15]

Deutzia scabra

Deutzia crenata 'Plena', a double-flowered cultivar

Deutzia hookeriana at UBC Botanical Garden

References

Sunset Western Garden Book, 1995:606–607
English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. 2015. p. 439. ISBN 978-89-97450-98-5. Retrieved 16 December 2016 – via Korea Forest Service.
A point made by Alice M. Coats, Garden Shrubs and Their Histories (1964) 1992, s.v. "Deutzia".
"AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 29. Retrieved 6 February 2018.
"RHS Plant Selector - Deutzia gracilis 'Nikko'". Retrieved 8 February 2018.
"RHS Plantfinder - Deutzia monbeigii". Retrieved 8 February 2018.
"RHS Plant Selector - Deutzia scabra 'Candidissima'". Retrieved 8 February 2018.
"RHS Plantfinder - Deutzia scabra 'Codsall Pink'". Retrieved 8 February 2018.
"RHS Plant Selector - Deutzia setchuenensis var. 'corymbiflora'". Retrieved 18 June 2013.
"RHS Plant Selector - Deutzia × elegantissima 'Rosealind'". Retrieved 18 June 2013.
"RHS Plantfinder - Deutzia × hybrida 'Contraste'". Retrieved 8 February 2018.
"RHS Plant Selector - Deutzia × hybrida 'Mont Rose'". Retrieved 18 June 2013.
"RHS Plant Selector - Deutzia × hybrida 'Strawberry Fields'". Retrieved 18 June 2013.
Coats (1964) 1992.
Rines, George Edwin, ed. (1920). "Deutzia" . Encyclopedia Americana.