''Philadelphus'' () (mock-orange) 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 of

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 from 3–20 ft (1–6 m) tall, native to

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

Central America Central America is a subregion of North America. Its political boundaries are defined as bordering Mexico to the north, Colombia to the southeast, the Caribbean to the east, and the Pacific Ocean to the southwest. Central America is usually ...

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

and (locally) in southeast

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

. They are named "mock-orange" in reference to their flowers, which in wild species look somewhat similar to those of oranges and lemons (''

Citrus ''Citrus'' is a genus of flowering trees and shrubs in the family Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, mandarins, lemons, grapefruits, pomelos, and limes. ''Citrus'' is nativ ...

'') at first glance, and smell of orange flowers and

jasmine Jasmine (botanical name: ''Jasminum'', pronounced ) is a genus of shrubs and vines in the olive family of Oleaceae. It contains around 200 species native to tropical and warm temperate regions of Eurasia, Africa, and Oceania. Jasmines are wid ...

(''Jasminum''). But ''Philadelphus'' is a basal

asterid Asterids are a large clade (monophyletic group) of flowering plants, composed of 17 orders and more than 80,000 species, about a third of the total flowering plant species. The asterids are divided into the unranked clades lamiids (8 orders) and ...

, not closely related to ''Jasminum'' (advanced asterids), and among the

eudicot The eudicots or eudicotyledons are flowering plants that have two seed leaves (cotyledons) upon germination. The term derives from ''dicotyledon'' (etymologically, ''eu'' = true; ''di'' = two; ''cotyledon'' = seed leaf). Historically, authors h ...

s quite distant from ''Citrus'' (advanced

rosid The rosids are members of a large clade (monophyletic group) of flowering plants, containing about 70,000 species, more than a quarter of all angiosperms. The clade is divided into 16 to 20 orders, depending upon circumscription and classificatio ...

s). An entirely misleading name for ''Philadelphus'' that is sometimes encountered is ''syringa''; this properly refers to the

lilacs The Literatura Latino-Americana e do Caribe em Ciências da Saúde (in Portuguese language, Portuguese), acronym LILACS, and previously called Latin American Index Medicus, is an on-line bibliographic database in medicine and health sciences, main ...

, which are fairly close relatives of jasmine. The connection of the two shrubs lies in their introduction from Ottoman gardens to European ones, effected at the same time by the Holy Roman emperor's ambassador to the

Sublime Porte The Sublime Porte, also known as the Ottoman Porte or High Porte ( or ''Babıali''; ), was a synecdoche or metaphor used to refer collectively to the central government of the Ottoman Empire in Istanbul. It is particularly referred to the buildi ...

Ogier Ghiselin de Busbecq Ogier Ghiselin de Busbecq (1522 in Comines – 29 October 1592 in Saint-Germain-sous-Cailly; ), sometimes Augier Ghislain de Busbecq, was a 16th-century Flemish writer, herbalist and diplomat in the employ of three generations of Austri ...

, who returned to Vienna in 1562. The two shrubs appear together in

John Gerard John Gerard (also John Gerarde, 1545–1612) was an English herbalist with a large garden in Holborn, now part of London. His 1,484-page illustrated ''Herball, or Generall Historie of Plantes'', first published in 1597, became a popular garde ...

's ''Herball'', as "Blew Pipe" (the lilac) and "White Pipe Tree", for the woods of both are pithy and easily hollowed out. ''Philadelphus'' is named after an ancient Greek king of Egypt,

Ptolemy II Philadelphus Ptolemy II Philadelphus (, ''Ptolemaîos Philádelphos'', "Ptolemy, sibling-lover"; 309 – 28 January 246 BC) was the pharaoh of Ptolemaic Egypt from 284 to 246 BC. He was the son of Ptolemy I, the Macedonian Greek general of Alexander the G ...

Description

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 species from the south of the genus' range 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 serrated margins, from 0.5-6 inches (1–14 cm) long. 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 white, with four petals and sepals, 0.5-2 inches (1–4 cm) diameter, and commonly (but not in all species) sweetly scented. 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 small 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. The

bark Bark may refer to: Common meanings * Bark (botany), an outer layer of a woody plant such as a tree or stick * Bark (sound), a vocalization of some animals (which is commonly the dog) Arts and entertainment * ''Bark'' (Jefferson Airplane album), ...

is thin and flaky, finely shredding in longitudinal strips.

Ecology

Mock-oranges are used as food plants by the

larva A larva (; : larvae ) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage. Animals with indirect development such as insects, some arachnids, amphibians, or cnidarians typically have a larval phase ...

e of some

Lepidoptera Lepidoptera ( ) or lepidopterans is an order (biology), order of winged insects which includes butterflies and moths. About 180,000 species of the Lepidoptera have been described, representing 10% of the total described species of living organ ...

species including

the engrailed The engrailed and small engrailed (''Ectropis crepuscularia'') are moths of the family Geometridae found from the British Isles through central and eastern Europe to the Russian Far East and Kazakhstan. The western Mediterranean and Asia Minor ...

(''Ectropis crepuscularia''). A noted

pathogen In biology, a pathogen (, "suffering", "passion" and , "producer of"), in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a Germ theory of d ...

of the sweet mock-orange (''P. coronarius'') is the undescribed

proteobacterium Pseudomonadota (synonym "Proteobacteria") is a major phylum of gram-negative bacteria. Currently, they are considered the predominant phylum within the domain of bacteria. They are naturally found as pathogenic and free-living (non- parasitic) ...

called "'' Pseudomonas tomato''" ( pv. ''philadelphi'').

Cultivation

For a long time, '' Philadelphus coronarius'' was the only mock-orange of gardens, though some adventurous Americans grew the native '' P. inodorus'' that

Mark Catesby Mark Catesby (24 March 1683 – 23 December 1749) was an English natural history, naturalist who studied the flora and fauna of the New World. Between 1729 and 1747, Catesby published his ''Natural History of Carolina, Florida and the Bahama ...

had discovered growing on the banks of the

Savannah River The Savannah River is a major river in the Southeastern United States, forming most of the border between the states of Georgia (U.S. state), Georgia and South Carolina. The river flows from the Appalachian Mountains to the Atlantic Ocean, ...

. It appeared in Lady Skipwith's garden lists and

George Washington George Washington (, 1799) was a Founding Fathers of the United States, Founding Father and the first president of the United States, serving from 1789 to 1797. As commander of the Continental Army, Washington led Patriot (American Revoluti ...

ordered some from Bartram in 1792. Mock-oranges are popular shrubs in

park A park is an area of natural, semi-natural or planted space set aside for human enjoyment and recreation or for the protection of wildlife or natural habitats. Urban parks are urban green space, green spaces set aside for recreation inside t ...

s and

garden A garden is a planned space, usually outdoors, set aside for the cultivation, display, and enjoyment of plants and other forms of nature. The single feature identifying even the wildest wild garden is ''control''. The garden can incorporate bot ...

s, grown for their reliable display of late spring flowers; the scented species are particularly valued. In addition to the species, there are numerous garden origin hybrids and

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 available, selected for doubleness and large flowers, with some compromise as to scent.

AGM cultivars

The following hybrid cultivars 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 ...

:- *'Aureus' (''P. coronarius'') *'Beauclerk' *'Belle Étoile' *'Innocence' *'Manteau d'Hermine' *'Sybille' *'Variegatus' (''P. coronarius'')

In culture

Lewis' mock-orange (''P. lewisii'') is the

state flower This is a list of U.S. state, federal district, and territory flowers. See also *List of U.S. state trees * Lists of U.S. state insignia References External linksList of state flowers {{USStateLists * U.S. state flowers Flowers ...

Idaho Idaho ( ) is a landlocked U.S. state, state in the Pacific Northwest and Mountain states, Mountain West subregions of the Western United States. It borders Montana and Wyoming to the east, Nevada and Utah to the south, and Washington (state), ...

. "Mock orange" is one of the most famous poems by the Nobel Prize winning poet

Louise Glück Louise Elisabeth Glück ( ; April 22, 1943 – October 13, 2023) was an American poet and essayist. She won the 2020 Nobel Prize in Literature, whose judges praised "her unmistakable poetic voice that with austere beauty makes individual existe ...

Selected species

Asia

* '' Philadelphus brachybotrys'' (southeast

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

) * '' Philadelphus delavayi'' – Delavay's mock-orange (southwest China) * '' Philadelphus incanus'' (

Hubei Hubei is a province of China, province in Central China. It has the List of Chinese provincial-level divisions by GDP, seventh-largest economy among Chinese provinces, the second-largest within Central China, and the third-largest among inland ...

Shaanxi Shaanxi is a Provinces of China, province in north Northwestern China. It borders the province-level divisions of Inner Mongolia to the north; Shanxi and Henan to the east; Hubei, Chongqing, and Sichuan to the south; and Gansu and Ningxia to t ...

) * '' Philadelphus kansuensis'' – Chinese evergreen mock-orange (northwest China) * '' Philadelphus laxiflorus'' (

Gansu Gansu is a provinces of China, province in Northwestern China. Its capital and largest city is Lanzhou, in the southeastern part of the province. The seventh-largest administrative district by area at , Gansu lies between the Tibetan Plateau, Ti ...

, Hubei, Shaanxi) * '' Philadelphus laxus'' Schrad. ex DC. – Japanese mock-orange (Japan; formerly ''P. satsumi'' * '' Philadelphus purpurascens'' (southwest China) * '' Philadelphus satsumanus'' – Downy Japanese mock-orange (

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

) * '' Philadelphus schrenkii'' – Korean mock-orange (northeast China, Korea, southeast Russia) * '' Philadelphus sericanthus'' (Sichuan, Hubei) * '' Philadelphus pekinensis'' – Beijing mock-orange (northern China) * '' Philadelphus subcanus'' (southwest China) * '' Philadelphus tenuifolius'' – Slenderleaf mock-orange (

Korea Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically Division of Korea, divided at or near the 38th parallel north, 3 ...

, southeast

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

) * '' Philadelphus tomentosus'' – Fuzzy mock-orange (

Himalaya The Himalayas, or Himalaya ( ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the Earth's highest peaks, including the highest, Mount Everest. More than 100 pea ...

) * '' Philadelphus triflorus'' – Himalayan mock-orange (Himalaya)

Europe

* '' Philadelphus caucasicus'' – Caucasus mock-orange (

Caucasus The Caucasus () or Caucasia (), is a region spanning Eastern Europe and Western Asia. It is situated between the Black Sea and the Caspian Sea, comprising parts of Southern Russia, Georgia, Armenia, and Azerbaijan. The Caucasus Mountains, i ...

) – likely syn. of ''P. coronarius'' * '' Philadelphus coronarius'' – Sweet mock-orange, English Dogwood (southeast Europe)

North America

Pancontinental hybrids

* '' Philadelphus × lemoinei'' (horticultural hybrid) * ''

Philadelphus × purpureomaculatus ''Philadelphus'' × ''purpureomaculatus'' is a flowering plant in the family Hydrangeaceae, of garden origin. It is a hybrid between '' Philadelphus × lemoinei'' and '' P. mexicanus'' 'Rose Syringa'. Growing to tall by broad, it is a deciduous ...

'' (horticultural hybrid) * '' Philadelphus × virginalis'' (horticultural hybrid)

References

External links

* {{Taxonbar, from=Q107394 Cornales genera Flora of Northern America