''Deutzia'' ( or ) is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of about 60

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

s in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Hydrangeaceae,

native Native may refer to: People * '' Jus sanguinis'', nationality by blood * '' Jus soli'', nationality by location of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Nat ...

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.

Description

The species are

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

s ranging from in height. Most are

deciduous In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed Leaf, leaves, usually in the autumn; to the shedding of petals, aft ...

, but a few

subtropical The subtropical zones or subtropics are geographical zone, geographical and Köppen climate classification, climate zones immediately to the Northern Hemisphere, north and Southern Hemisphere, south of the tropics. Geographically part of the Ge ...

species are

evergreen In botany, an evergreen is a plant which has Leaf, foliage that remains green and functional throughout the year. This contrasts with deciduous plants, which lose their foliage completely during the winter or dry season. Consisting of many diffe ...

. The

leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...

are opposite, simple, with a serrated margin. The

flower Flowers, also known as blooms and blossoms, are the reproductive structures of flowering plants ( angiosperms). Typically, they are structured in four circular levels, called whorls, around the end of a stalk. These whorls include: calyx, m ...

s are produced in

panicle In botany, a panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a p ...

s or

corymb Corymb is a botanical term for an inflorescence with the flowers growing in such a fashion that the outermost are borne on longer pedicels than the inner, bringing all flowers up to a common level. A corymb has a flattish top with a superficial re ...

s; they are white in most

, sometimes pink or reddish. The

fruit In botany, a fruit is the seed-bearing structure in flowering plants (angiosperms) that is formed from the ovary after flowering. Fruits are the means by which angiosperms disseminate their seeds. Edible fruits in particular have long propaga ...

is a dry capsule containing numerous small

seed In botany, a seed is a plant structure containing an embryo and stored nutrients in a protective coat called a ''testa''. More generally, the term "seed" means anything that can be Sowing, sown, which may include seed and husk or tuber. Seeds ...

s. Identification of the species is very difficult, requiring often microscopic detail of the leaf hairs and seed capsule structure.

Etymology

''Deutzia'' was named by

Carl Peter Thunberg Carl Peter Thunberg, also known as Karl Peter von Thunberg, Carl Pehr Thunberg, or Carl Per Thunberg (11 November 1743 – 8 August 1828), was a Sweden, Swedish Natural history, naturalist and an Apostles of Linnaeus, "apostle" of Carl Linnaeus ...

for his friend and patron,

Johann van der Deutz Johann, typically a male given name, is the German form of ''Iohannes'', which is the Latin form of the Greek name ''Iōánnēs'' (), itself derived from Hebrew name '' Yochanan'' () in turn from its extended form (), meaning "Yahweh is Gracious" ...

, 18th century botanist.

Taxonomy

Selected species

Cultivation and uses

The deutzias are fairly new to gardens: the exception, ''D. scabra'', was noticed in Japanese gardens by

Engelbert Kaempfer Engelbert Kaempfer (16 September 16512 November 1716) was a German natural history, naturalist, physician, exploration, explorer, and writer known for his tour of Russia, Iran, Persia, India, Southeast Asia, and Japan between 1683 and 1693. He ...

(1712) and

(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. Deutzias are commonly grown as

ornamental plant Ornamental plants or ''garden plants'' are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants and garden varieties tend to be specially bred cultivars th ...

s for their white and pink flowers. Many

cultivar A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...

s and

hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two diff ...

s 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 The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr ...

Award of Garden Merit The Award of Garden Merit (AGM) is a long-established award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. It includes the full range of cultivated p ...

:- *''Deutzia gracilis'' 'Nikko' *''Deutzia monbeigii'' *''Deutzia scabra'' 'Candidissima' *''Deutzia scabra'' 'Codsall Pink' *''Deutzia setchuenensis'' var. ''corymbiflora'' *''Deutzia'' × ''elegantissima'' 'Rosealind' *''Deutzia'' × ''hybrida'' 'Contraste' *''Deutzia'' × ''hybrida'' 'Mont Rose' *''Deutzia'' × ''hybrida'' 'Strawberry Fields' The temperate deutzias are mostly hardy shrubs from East Asia 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 CoatsCoats (1964) 1992. 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 Rochester is a city in and the county seat, seat of government of Monroe County, New York, United States. It is the List of municipalities in New York, fourth-most populous city and 10th most-populated municipality in New York, with a populati ...

nurserymen Ellwanger and Barry. ''Deutzia scabra'' is used by joiners in Japan to polish wood. Deutzia scabra A.jpg, ''Deutzia scabra'' Deutzia scabra plena.jpg, ''Deutzia crenata'' 'Plena', a double-flowered cultivar 20140612 UBCBG Deutzia Hookeriana.jpg, ''Deutzia hookeriana'' at

UBC Botanical Garden The UBC Botanical Garden is a botanical garden located on the University of British Columbia campus in Vancouver, British Columbia. It maintains a documented living collection of temperate plants for the purposes of education, research, conservat ...

References

External links

Flora of Pakistan: ''Deutzia''

Flora of Nepal checklist: ''Deutzia''
* {{Authority control Cornales genera