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"Hortensia" redirects here. For other uses, see Hortensia (disambiguation).
"Ajisai" redirects here. For the satellite, see Experimental Geodetic Payload. The Experimental Geodetic Payload is a Japanese Satellite sponsored by NASDA, and launched in 1986 on the first flight of the H-I rocket
Hydrangea
Hydrangea macrophylla
Hydrangea macrophylla
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Cornales
Family: Hydrangeaceae
Genus: Hydrangea
L.
Species

See text

Hydrangea (pronounced /haɪˈdreɪndʒ(i)ə/, common names Hydrangea and Hortensia) is a genus of about 70-75 species of flowering plants native to southern and eastern Asia (from Japan to China, the Himalaya and Indonesia) and North and South America. Plants are living Organisms belonging to the kingdom Plantae. The flowering plants or angiosperms ( Angiospermae or Magnoliophyta) are the most widespread group Magnoliopsida is the Botanical name for a class of Flowering plants By definition the class will include the family Magnoliaceae, but its Cornales is an order of Flowering plants basal among the Asterids, which are part of the core Eudicots. Hydrangeaceae is a family of Flowering plants in the order Cornales, with a wide distribution in Asia and North America, and locally Carl Linnaeus (Latinized as Carolus Linnaeus, also known after his ennoblement as, May 23 new style (13 May old style 1707 who laid the foundations for The flowering plants or angiosperms ( Angiospermae or Magnoliophyta) are the most widespread group For a topic outline on this subject see List of basic Japan topics. China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National The Republic of Indonesia ( (Republik Indonesia is a Country in Southeast Asia. South America is a Continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a The flowers are extremely common in the Azores Islands of Portugal, particularly on Faial Island, which is known as the "blue island" due to the vast number of hydrangeas present on the island. The Azores ( Açores ɐˈsoɾɨʃ or) is a Portuguese Archipelago in the Atlantic Ocean, about 1500 km (950  mi) from Portugal, officially the Portuguese Republic (República Portuguesa is a country on the Iberian Peninsula. Faial Island ( pron fɐi'aɫ also known in English as Fayal, is a Portuguese Island of the Central group ( Grupo Central) of By far the greatest species diversity is in eastern Asia, notably China and Japan. Most are shrubs 1-3 m tall, but some are small trees, and others lianas reaching up to 30 m by climbing up trees. A shrub or Bush is a horticultural rather than strictly botanical category of Woody plant, distinguished from a Tree A tree is a perennial Woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or The liana is any of various long-stemmed usually woody vines that are rooted in the soil at ground level and use trees as well as other means of vertical support to climb up to They can be either deciduous or evergreen, though the widely cultivated temperate species are all deciduous. Botany Autumn leaf color. See --> In Botany and Horticulture, deciduous Plants, including In Botany, an Evergreen plant is a plant having leaves all year round

Hydrangea flowers are produced from early spring to late autumn; they grow in flowerheads (corymbs or panicles) at the ends of the stems. A flower, also known as a bloom or Blossom, is the reproductive structure found in Flowering plants (plants of the division Magnoliophyta, also Spring is one of the four Temperate Seasons Spring marks the transition from Winter into Summer. Autumn (also known as fall in North American English) is one of the four Temperate Seasons Autumn marks the transition from Summer A panicle is a compound Raceme, a loose much-branched indeterminate Inflorescence with pedicellate Flowers (and Fruit A panicle is a compound Raceme, a loose much-branched indeterminate Inflorescence with pedicellate Flowers (and Fruit In many species, the flowerheads contain two types of flowers, small fertile flowers in the middle of the flowerhead, and large, sterile bract-like flowers in a ring around the edge of each flowerhead. Other species have all the flowers fertile and of the same size.

In most species the flowers are white, but in some species (notably H. White is a Color, the perception which is evoked by Light that stimulates all three types of color sensitive Cone cells in the Human eye macrophylla), can be blue, red, pink, or purple. In these species the exact colour often depends on the pH of the soil; acidic soils produce blue flowers, neutral soils produce very pale cream petals, and alkaline soils results in pink or purple. pH is the measure of the acidity or alkalinity of a Solution. In Computer science, ACID ( Atomicity Consistency Isolation Durability) is a set of properties that guarantee that Database transactions are In Chemistry, an alkali (from Arabic: Al-Qaly القلي القالي) is a basic, ionic salt of an Alkali metal Hydrangeas are one of very few plants that accumulate aluminium. WikipediaNaming Aluminium is released from acidic soils, and in some species, forms complexes in the hydrangea flower giving them their blue colour.

Species in the related genus Schizophragma, also in Hydrangeaceae, are also often known as hydrangeas. Schizophragma is a genus of four species of Lianas in the Hydrangeaceae, native to Asia from the Himalaya east to Taiwan Schizophragma hydrangeoides and Hydrangea petiolaris are both commonly known as climbing hydrangeas. Schizophragma is a genus of four species of Lianas in the Hydrangeaceae, native to Asia from the Himalaya east to Taiwan Hydrangea petiolaris is a species native to the woodlands of Japan, Korea and Sakhalin in easternmost Siberia.

Contents

Partial list of species

Hydrangea sp, fertile individual flower.
Hydrangea sp, fertile individual flower.
Hydrangea, flowers in winter.
Hydrangea, flowers in winter.
H. macrophylla, Watermouth Castle, north Devon, England
H. macrophylla, Watermouth Castle, north Devon, England
closeup of petals
closeup of petals
Hydrangeas in front of the Office de Tourisme Building in Chartres, France.
Hydrangeas in front of the Office de Tourisme Building in Chartres, France.

Cultivation and uses

Hydrangeas are popular ornamental plants, grown for their large flowerheads, with Hydrangea macrophylla being by far the most widely grown with over 600 named cultivars, many selected to have only large sterile flowers in the flowerheads. Ornamental plants are typically grown in the flower Garden or as House plants Most commonly they are grown for the display of their Flowers Other common Hydrangea macrophylla is a species of Hydrangea native to Japan. A cultivar is a cultivated Plant that has been selected and given a unique name because of its decorative or useful characteristics it is usually distinct from similar Some are best pruned on an annual basis when the new leaf buds begin to appear. If not pruned regularly, the bush will become very 'leggy', growing upwards until the weight of the stems is greater than their strength, at which point the stems will sag down to the ground and possibly break. Other species only flower on 'old wood'. Thus new wood resulting from pruning will not produce flowers until the following season.

Hydrangeas are moderately toxic if eaten, with all parts of the plant containing cyanogenic glycosides. However, poisoning is rare, as the plant does not look like an enticing food source.

In Korean tea, Hydrangea serrata (hangul:산수국 hanja:山水菊) is used for an herbal tea called ilsulcha (이슬차). Korean tea refers to various types of Tisane that can be served hot or cold Hanja is the Korean name for Chinese characters. More specifically it refers to those Chinese characters borrowed from Chinese and incorporated An herbal tea, tisane, or ptisan is an Herbal Infusion made from anything other than the leaves of the Tea bush ( Camellia

Hydrangea paniculata is sometimes smoked to produce cannabis-like effects. Cannabis ( Cán-na-bis) is a Genus of Flowering plants that includes three putative species Cannabis sativa subsp [1]

Flowers

Hydrangea macrophylla, flowers.

Hydrangea macrophylla, flowers

Hydrangea sp. painted by the botanical artist Redouté

Hydrangea quercifolia

Hydrangea macrophylla, leaves

Wild Hydrangea v. Pierre-Joseph Redouté ( July 10, 1759 - June 20, 1840) was a Belgian painter and Botanist, known for his paintings Annabelle
Hydrangea arborescens

Wild Hydrangea v. Annabelle
Hydrangea arborescens

Hydrangea aspera ssp. sargentiana

Diseases

Main article: List of hydrangea diseases

References

  1. ^ Erowid Hydrangea Vault

1 http://www.erowid.org/herbs/hydrangea/hydrangea.shtml

External links

Dictionary

hydrangea

-noun

  1. Any of several shrubs, of the genus Hydrangea, having large clusters of white, pink or blue flowers
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