Camellia (pronounced /kəˈmɛliə/[2] or /kəˈmiːliə/[3]) is a
genus of flowering plants in the family
Theaceae.[1] They are found in tropical and subtropical areas in
eastern and
southern Asia, from the
Himalayas east to
Japan and
Indonesia. There are more than 220 described
species.[1] Camellias are popular ornamental, tea and woody-oil plants that have been cultivated throughout the world for centuries. To date, over 26,000 cultivars, with more than 51,000 cultivar names including synonyms, have been registered or published.[4][5]
Of economic importance in East Asia, Southeast Asia, and the Indian subcontinent, leaves of C. sinensis are processed to create the popular beverage
tea. The ornamental C. japonica, C. sasanqua and their
hybrids are the source of hundreds of garden
cultivars. C. oleifera produces
tea seed oil, used in cooking and cosmetics.
Taxonomy
The genus was named by
Linnaeus after the Jesuit botanist
Georg Joseph Kamel, who worked in the Philippines and described one of its species (although Linnaeus did not refer to Kamel's account when discussing the genus).[6]: 246, 255
Botany
Camellias are
evergreenshrubs or small
trees up to 20 m (66 ft) tall. Their leaves are alternately arranged, simple, thick, serrated, and usually glossy.
Flowers and fruit
Their flowers are usually large and conspicuous, one to 12 cm in diameter, with five to nine petals in naturally occurring species of camellias. The colors of the flowers vary from white through pink colors to red; truly yellow flowers are found only in South China and Vietnam. Tea varieties are always white-flowered. Camellia flowers throughout the genus are characterized by a dense bouquet of conspicuous yellow stamens, often contrasting with the petal colors.[7][8]
The
fruit of camellia plants is a dry
capsule, sometimes subdivided in up to five compartments, each compartment containing up to eight
seeds.
Growth
The various species of camellia plants are generally well-adapted to
acid soils rich in
humus, and most species do not grow well on
chalky soil or other
calcium-rich soils. Most species of camellias also require a large amount of water, either from natural rainfall or from
irrigation, and the plants will not tolerate
droughts. However, some of the more unusual camellias – typically species from
karst soils in
Vietnam – can grow without too much water.
Camellia plants usually have a rapid growth rate. Typically they will grow about 30 cm per year until mature – though this does vary depending on their variety and geographical location.
Mainly due to
habitat destruction, several camellias have become quite rare in their natural range. One of these is the aforementioned C. reticulata, grown commercially in thousands for horticulture and oil production, but rare enough in its natural range to be considered a
threatened species.
Use by humans
Camellia sinensis, the tea plant, is of major commercial importance because
tea is made from its leaves. The species C. sinensis is the product of many generations of
selective breeding in order to bring out qualities considered desirable for tea. However, many other camellias can be used to produce a similar beverage. For example, in some parts of Japan, tea made from C. sasanqua leaves is popular.
Tea Seed oil is a sweet seasoning and cooking oil made by pressing the seeds of C. oleifera, C. japonica, and to a lesser extent other species such as C. crapnelliana, C. reticulata, C. sasanqua and C. sinensis. Relatively little-known outside East Asia, it is the most important
cooking oil for hundreds of millions of people, particularly in southern China.
Camellia oil is commonly used to clean and protect the blades of cutting instruments.
Camellia oil pressed from seeds of C. japonica, also called tsubaki oil or tsubaki-abura (椿油) in Japanese, has been traditionally used in Japan for hair care.[10]C. japonica plant is used to prepare traditional antiinflammatory medicines.[11]
Camellias were cultivated in the gardens of China for centuries before they were seen in Europe. The German botanist
Engelbert Kaempfer reported[13] that the "Japan Rose", as he called it, grew wild in woodland and hedgerow, but that many superior varieties had been selected for gardens. Europeans' earliest views of camellias must have been their representations in Chinese painted wallpapers, where they were often represented growing in porcelain pots.
The first living camellias seen in England were a single red and a single white, grown and flowered in his garden at
Thorndon Hall, Essex, by
Robert James, Lord Petre, among the keenest gardeners of his generation, in 1739. His gardener
James Gordon was the first to introduce camellias to commerce, from the nurseries he established after Lord Petre's untimely death in 1743, at Mile End, Essex, near London.[14]
With the expansion of the
tea trade in the later 18th century, new varieties began to be seen in England, imported through the
British East India Company. The Company's John Slater was responsible for the first of the new camellias, double ones, in white and a striped red, imported in 1792. Further camellias imported in the East Indiamen were associated with the patrons whose gardeners grew them: a double red for Sir Robert Preston in 1794 and the pale pink named "Lady Hume's Blush" for Amelia, the lady of
Sir Abraham Hume of
Wormleybury, Hertfordshire (1806). The camellia was imported from England to America in 1797 when
Colonel John Stevens brought the flower as part of an effort to grow attractions within
Elysian Fields in
Hoboken,
New Jersey.[15] By 1819, twenty-five camellias had bloomed in England; that year the first monograph appeared, Samuel Curtis's, A Monograph on the Genus Camellia, whose five handsome folio colored illustrations have usually been removed from the slender text and framed. Camellias that set seed, though they did not flower for more than a decade, rewarded their growers with a wealth of new varieties. By the 1840s, the camellia was at the height of its fashion as the luxury flower. The Parisian courtesan
Marie Duplessis, who died young in 1847, inspired Dumas' La Dame aux camélias and Verdi's La Traviata.
The fashionable imbricated formality of prized camellias was an element in their decline, replaced by the new hothouse
orchid. Their revival after World War I as woodland shrubs for mild climates has been paralleled by the rise in popularity of Camellia sasanqua.
Modern cultivars
The tea camellia, C. sinensis, has
many commercial cultivars selected for the taste of their leaves once processed into tea leaves.
Today camellias are grown as ornamental plants for their flowers; about 3,000
cultivars and
hybrids have been selected, many with
double or semi-double flowers. C. japonica is the most prominent species in cultivation, with over 2,000 named cultivars. Next are C. reticulata with over 400 named cultivars, and C. sasanqua with over 300 named cultivars. Popular hybrids include C. × hiemalis (C. japonica × C. sasanqua) and C. × williamsii (C. japonica × C. saluenensis). Some varieties can grow to a considerable size, up to 100
m2, though more compact cultivars are available. They are frequently planted in woodland settings, alongside other
calcifuges such as
rhododendrons, and are particularly associated with areas of high soil acidity, such as Cornwall and Devon in the UK. They are highly valued for their very early flowering, often among the first flowers to appear in the late winter. Late
frosts can damage the flower buds, resulting in misshapen flowers.[16]
There is great variety of flower forms:
single (flat, bowl- or cup-shaped)
semi-double (rows of large outer petals, with the centre comprising mixed petals and stamens)
double:
paeony form (convex mass of irregular petals and petaloids with hidden stamens)
anemone form (one or more rows of outer petals, with mixed petaloids and stamens in the centre)
rose form (overlapping petals showing stamens in a concave centre when open)
formal double (rows of overlapping petals with hidden stamens)
Augusta National Golf Club's 10th hole is named "Camellia", one of many references to the plant nursery originally on the site of the course.
Rabindranath Tagore wrote a poem entitled "Camellia" about a youth's longing for a young woman he sees on the train.
In the book To Kill a Mockingbird, Jem destroys Mrs. Dubose's camellia bushes after she insults his family, yet he later receives a camellia bud from the dying woman.
A white camellia flower is an iconic symbol of
Chanelhaute couture, a tradition started by
Coco Chanel herself who identified with the heroine of Dumas' work.
Camellias have major significance in the
Akira Kurosawa film Sanjuro, likely due to their association with the concept of "a noble death" in samurai culture.
White camellias became a symbol of the women's
suffrage movement in New Zealand and appears on the country's
ten-dollar note.
Temple City, California's slogan since 1944 has been "Temple City, Home of Camellias", and the city has become well-known for its Camellia Festival.
In Brazil, the camellia was a symbol of
abolitionist movement during the Imperial Age. It was common practice for abolitionists to plant camellias in a show of solidarity.[28]
^Journal of Plant Research, September 2016, Volume 129, Issue 5, pp 823–831, Camellia nanningensis sp. nov.: the earliest fossil wood record of the genus Camellia (Theaceae) from East Asia by Lu-Liang Huang, Jian-Hua Jin, Cheng Quan and Alexei A.
^Kaemfer, Amoenitates exoticae, 1712, noted by Alice M. Coats, Garden Shrubs and Their Histories (1964) 1992, s.v. "Camellia".
^"State Flower of Alabama". Official Symbols and Emblems of Alabama. Alabama Department of Archives and History. February 6, 2014. Archived from
the original on 2012-07-28. Retrieved 2019-05-07.
^Toni Boornazian (November 23, 2020).
"Camellia: The "Winter's Rose"". Stuyvesant Park Neighborhood Association. Retrieved 2022-08-10.
Further reading
Harder, A.; Holden–Dye, L.; Walker, R. & Wunderlich, F. (2005): Mechanisms of action of emodepside. Parasitology Research97(Supplement 1): S1-S10.
doi:
10.1007/s00436-005-1438-z (HTML abstract)
Mair, V.; Hoh, E. (2009): The True History of Tea. Thames & Hudson.
ISBN978-0-500-25146-1.
F. Camangi, A. Stefani, T. Bracci, A. Minnocci, L. Sebastiani, A. Lippi, G. Cattolica, A.M. Santoro: Antiche camelie della Lucchesia (Storia, Botanico, Cultura, agronomia novità scientifiche e curiosità;
Orto Botanico Comunale di Lucca). Edition ETS;
Lucca, 2012. Italian.