Gordonia (plant)

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Gordonia
Gordonia lasianthus.jpg
Gordonia lasianthus flower
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Theaceae
Genus: Gordonia
J.Ellis
Species

See text

Gordonia lasianthus leaf and branch Gordonia lasianthus1.jpg
Gordonia lasianthus leaf and branch
Gordonia lasianthus beginning to bloom, June, N. Florida GordoniaLasianthus21Jun03.jpg
Gordonia lasianthus beginning to bloom, June, N. Florida

Gordonia is a genus of flowering plants in the family Theaceae, related to Franklinia , Camellia and Stewartia . Of the roughly 40 species, all but two are native to southeast Asia in southern China, Taiwan and Indochina. The remaining species, G. lasianthus (Loblolly-bay), is native to southeast North America, from Virginia south to Florida and west to Louisiana; G. fruticosa is native to the tropical rainforests of Central and South America, from Costa Rica to Brazil.

Contents

They are evergreen trees, growing to 10–20 m tall. The bark is thick and deeply fissured. The leaves are alternately arranged, simple, serrated, thick, leathery, glossy, and 6–18 cm long. The flowers are large and conspicuous, 4–15 cm diameter, with 5 (occasionally 6-8) white petals; flowering is in late winter or early spring. The fruit is a dry five-valved capsule, with 1-4 seeds in each section.

The species are adapted to acidic soils, and do not grow well on chalk or other calcium-rich soils. They also have a high rainfall requirement and will not tolerate drought.

Some botanists include Franklinia within Gordonia, even though recent phylogenetic studies show that Franklinia's closest living relationship is with the Asian genera Schima and not Gordonia; [1] it differs in being deciduous and flowering in late summer, not late winter. The draft Flora of China account of Theaceae in China splits Gordonia into two genera, with G. lasianthus retained in Gordonia, and the Asian species transferred to Polyspora; this treatment is not yet widely accepted. Gordonia chrysandra may have anti-inflammatory medicinal properties. [2]

Species

There are about 40 species, including:

Gordonia species from East Asia were transferred to Polyspora, including: [3]

Cultivation and uses

Several species of Gordonia are grown as ornamental plants for their flowers produced in winter when few other trees are in flower. They are however difficult to grow compared to the similar but generally smaller-growing camellias.

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Magnoliaceae

The Magnoliaceae are a flowering plant family, the magnolia family, in the order Magnoliales. It consists of two subfamilies: Magnolioideae, of which Magnolia is the best-known genus, and Liriodendroidae, a monogeneric subfamily, of which Liriodendron is the only genus.

<i>Camellia</i> Genus of flowering plants in the tea family Theaceae

Camellia is a genus of flowering plants in the family Theaceae. They are found in eastern and southern Asia, from the Himalayas east to Japan and Indonesia. There are 100–300 described species, with some controversy over the exact number. There are also around 3,000 hybrids. The genus was named by Linnaeus after the Jesuit botanist Georg Joseph Kamel, who worked in the Philippines and described a species of camellia. Camellias are famous throughout East Asia; they are known as cháhuā in Chinese, tsubaki (椿) in Japanese, dongbaek-kkot (동백꽃) in Korean, and as hoa trà or hoa chè in Vietnamese.

Theaceae Family of flowering plants

Theaceae, the tea family, is a family of flowering plants comprising shrubs and trees, including the economically important tea plant, and the ornamental camellias. It can be described as having from seven to 40 genera, depending on the source and the method of circumscription used. The family Ternstroemiaceae has been included within Theaceae; however, the APG III system of 2009 places it instead in Pentaphylacaceae. Most but not all species are native to China and East Asia.

<i>Camellia sinensis</i> Species of flowering plant in the family Theaceae

Camellia sinensis is a species of evergreen shrubs or small trees in the flowering plant family Theaceae whose leaves and leaf buds are used to produce tea. Common names include "tea plant", "tea shrub", and "tea tree".

<i>Dasiphora fruticosa</i> Species of flowering plant in the rose family Rosaceae

Dasiphora fruticosa is a species of hardy deciduous flowering shrub in the family Rosaceae, native to the cool temperate and subarctic regions of the northern hemisphere, often growing at high altitudes in mountains. Dasiphora fruticosa is a disputed name, and the plant is still widely referenced in the horticultural literature under its synonym Potentilla fruticosa. Common names include shrubby cinquefoil, golden hardhack, bush cinquefoil, shrubby five-finger, and widdy.

<i>Franklinia</i> Genus of trees

Franklinia is a monotypic genus in the tea family, Theaceae. The sole species in this genus is a flowering tree, Franklinia alatamaha, commonly called the Franklin tree, and native to the Altamaha River valley in Georgia in the southeastern United States. It has been Extinct in the wild since the early 19th century, but survives as a cultivated ornamental tree.

<i>Stewartia</i>

Stewartia is a genus of 8-20 species of flowering plants in the family Theaceae, related to Camellia. Most of the species are native to eastern Asia in China, Japan, Korea, Laos, Myanmar, Thailand, and Vietnam, with two in southeast North America, from Virginia and Kentucky south to Florida and Louisiana.

<i>Camellia japonica</i> Species of flowering plant

Camellia japonica, known as common camellia, Japanese camellia, or tsubaki in Japanese, is one of the best known species of the genus Camellia. Sometimes called the rose of winter, it belongs to the family Theaceae. It is the official state flower of the US state of Alabama. There are thousands of cultivars of C. japonica in cultivation, with many colors and forms of flowers. In the U.S. it is sometimes called japonica, a name more often used in the UK for Chaenomeles.

<i>Corylopsis</i> Genus of flowering plants

Corylopsis is a genus of nearly 30 species of shrubs in the witch hazel family, Hamamelidaceae, native to eastern Asia with the majority of species endemic to China but with some also in Japan, Korea, and the Himalayas. This genus is also known from the extinct species Corylopsis reedae described from Eocene leaf fossils found in Washington State, USA.

<i>Gordonia lasianthus</i> Species of tree

Gordonia lasianthus is a small to medium-sized evergreen tree or shrub found in acidic, swampy soils of pinelands and bays on the Atlantic and Gulf Coastal Plains of the southeastern United States. It is a member of the tea or family Theaceae. It is slow growing with soft, light-colored, fine-grained wood of little commercial value, although loblolly-bay could be managed as a source of pulpwood. When older specimens are cut, the wood exudes a strong scent. It is similar to a mixture of fresh oranges and pine sap. The bark of the adult tree varies from medium grey to a red brown coloration. Dead adult specimens of loblolly bay exhibit a lustrous shine when exposed to sunlight for several years. The white showy flowers and shiny foliage make it a desirable ornamental, but it is not easy to cultivate. Deer browse stump sprouts heavily.

<i>Stewartia ovata</i>

Stewartia ovata, known commonly as mountain camellia, is a small tree native to low to mid-elevations in the southern Appalachian Mountains and nearby regions from Mississippi to Virginia. It is a member of the Theaceae, the tea family.

Pentaphylax is a genus of flowering plants, with one or two species which are shrubs and small trees. The species has simple evergreen leaves that are alternately arranged on the stems. The flower pistil is 5 celled and the anthers dehiscing via pores and basifixed. Flowers have five petals and five sepals that are distinct from each other and five stamens attached oppositely to the sepals. The seeds are winged.

<i>Lasianthus</i> Genus of flowering plants

Lasianthus is a genus of flowering plants in the family Rubiaceae. They are tropical subshrubs, shrubs, or rarely, small trees. They inhabit the understory of primary forests. None of them are known to have any use.

<i>Commelina benghalensis</i> Species of flowering plant

Commelina benghalensis, commonly known as the Benghal dayflower, tropical spiderwort, or wandering Jew, kanshira in Bengali, is a perennial herb native to tropical Asia and Africa. It has been widely introduced to areas outside its native range, including to the neotropics, Hawaii, the West Indies and to both coasts of North America. It has a long flowering period, from spring to fall in subtropical areas, and throughout the year closer to the equator. It is often associated with disturbed soils.

Polyscias fruticosa

Polyscias fruticosa, or Ming aralia, is a perennial plant, dicot evergreen shrub or dwarf tree native to India. The plant grows fairly slowly but can reach up to 1 to 2 meters in height. The leaves are of a dark green pigment, glossy in texture, and are tripinnate and appear divided. Individual leaves vary from narrowly ovate to lanceolate and are about 10 cm long.

<i>Cautleya</i> Genus of flowering plants

Cautleya is a small genus of perennial plants of the family Zingiberaceae, found in the eastern Himalayas through to China and Vietnam. It consists of two species of high-altitude tropical and temperate exotic jungle gingers, native to cool forest areas – an unusual habitat for members of the Zingiberaceae. They are grown as ornamental flowering plants.

<i>Melastoma malabathricum</i>

Melastoma malabathricum, known also as Malabar melastome, Indian rhododendron, Singapore rhododendron, planter's rhododendron and senduduk, is a flowering plant in the family Melastomataceae. This plant is native to Indomalaya, Japan and Australia, and is usually found between 100 and 2,800 m on grasslands and sparse forests. It has been used as a medicinal plant in certain parts of the world, but has been declared a noxious weed in the United States. M. malabathricum is a known hyperaccumulator of aluminium, and as such can be used for phytoremediation.

<i>Stewartia sinensis</i>

Stewartia sinensis, the Chinese stewartia, is a species of flowering plant in the camellia family Theaceae, native to central and eastern China. It is typically a small deciduous tree or large shrub, commonly growing to about 9 m (30 ft) tall. It is highly regarded horticulturally for the combination of its attractive, cinnamon-colored peeling bark, numerous cup-shaped, fragrant white flowers to 10 cm (4 in) in midsummer, and generally intensely red autumn (fall) foliage. The species also has an attractive multiple-branched growth habit and low maintenance requirements.

<i>Alnus alnobetula</i> Species of tree

Alnus alnobetula is a common tree widespread across much of Europe, Asia, and North America. Many sources refer to it as Alnus viridis, the green alder, but botanically this is considered an illegitimate name synonymous with Alnus alnobetula subsp. fruticosa.

<i>Polyspora axillaris</i> Species of tree

Polyspora axillaris is a species of evergreen trees or shrubs that can grow up to 9 m tall. It has been given the name "Fried Egg Plant" for its white and yellow flower. P. axillaris is found in Southern China, including Hong Kong and Hainan. Is also grows in the wild in Taiwan and Vietnam, and is a garden tree all over the world.

References

  1. Prince, L. M. and C. R. Parks. 2001. Phylogenetic relationships of Theaceae inferred from Chloroplast DNA sequence data. Am. J. Bot. 88: 2309-2320.
  2. CJ, Yang JZ, Shen ZF, Zhang DMFu HZ, Li.,"Potential Anti-inflammatory Constituents of the Stems of Gordonia chrysandra." J Nat Prod. 2011 Apr 7;
  3. "Taxonomic Treatment of Chinese Polyspora Sweet(Theaceae)" (PDF). Journal of Tropical and Subtropical Botany. 中国科学院华南植物园. Retrieved 2009-02-13.[ permanent dead link ]