Английская Википедия:Hippeastrum

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Шаблон:Short description Шаблон:About Шаблон:Use dmy dates Шаблон:Good article Шаблон:Automatic taxobox

Файл:Hippeastrum miniatum Blanco2.359.png
Flower, leaves and bulb of Hippeastrum miniatum. Francisco Manuel Blanco, Flora de Filipinas 1880–1883
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Hippeastrum bulb
Файл:Hippeastrum flower.jpg
Detail of Hippeastrum flower

Hippeastrum (Шаблон:IPAc-en)Шаблон:Sfn is a genus of about 90 species, and over 600 hybrids and cultivars, of perennial, herbaceous and bulbous plants, native to tropical and subtropical regions of the Americas, from Mexico south to Argentina and on some islands in the Caribbean. The majority have large, fleshy bulbs—usually about the size of a softball—and tall, broad, strap-like leaves that are (generally) evergreen, and large red or purple flowers. Numerous colors and cultivars have been created over the past hundred years.

Hippeastrum is a genus in the family Amaryllidaceae (subfamily Amaryllidoideae, tribe Hippeastreae, and subtribe Hippeastrinae).Шаблон:Sfn For many years, there has been confusion among botanists, as well as collectors and the general public, over the generic names Amaryllis and Hippeastrum; the former is a South African genus of plants, while the latter is a new world genus. However, the common name "amaryllis" has been used for Hippeastrum for years, especially for the ornamental cultivars (sold as indoor flowering bulbs around November and December, for Christmas, in the Northern Hemisphere). Within the genus Hippeastrum exist many epiphytic species, as well, which may be found living in natural debris and leaf litter on the crooks of tree branches; by comparison, Amaryllis is a primarily terrestrial, southern African genus of perennial bulbs.

Description

Файл:Hippeastrum-pod.jpg
Hippeastrum: Trivalvar Capsule
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Hippeastrum: Pistil and stamens
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Hippeastrum: Stamens with filaments (white) ending in anthers carrying pollen

Most Hippeastrum bulbs are tunicate (a protective dry outer layer and fleshy concentric inner scales or leaf bases). The bulbs are generally between 5–12 cm (2"–5") in diameter and produce two to seven long-lasting evergreen or deciduous leaves that are 30–90 cm (12"–36") long and 2.5–5 cm (1"–2") wide. The leaves are hysteranthous (develop after flowering), sessile (borne directly from the stem or peduncle), rarely persistent and subpetiolate.Шаблон:Sfn

The flowers are arranged in umbelliform inflorescences which are pauciflor or pluriflor (2-14 flowers), supported on an erect hollow scape (flower stem) which is 20–75 cm (12"–30") tall and 2.5–5 cm (1"–2") in diameter with two free bracts forming a spathe which is bivalve with free leaflets at its base.Шаблон:Sfn Depending on the species, there are two to fifteen large showy flowers, which are more or less zygomorphic and hermaphrodite. Each flower is 13–20 cm (5"–8") across, and the native species are usually purple or red. They are funnelform (funnel shaped)[1] and declinate (curving downwards and then upwards at the tip)[2] in shape. The perianth has six brightly colored tepals (three outer sepals and three inner petals) that may be similar in appearance or very different. The perianth segments are subequal or unequal.[3] The tepals are united at the base to form a short tube, usually with a rudimentary scaly paraperigoniumШаблон:Sfn with fimbriae[4] or a callose ridge present at the throat.

The androecium consists of six stamens with filiform (thread like) filaments, which are fasciculate (in close bundles) and declinate or ascendent. The anthers are dorsifixed or versatile.Шаблон:Sfn In the gynaecium, the ovary is inferior and trilocular with pluriovulate locules.[5] The style is filiform, and the stigma trifid. The fruit forms a trivalve capsule containing seeds which are dry, flattened, obliquely winged or irregularly discoid, hardly ever turgid, and globose (spherical) or subglobose, with a brown or black phytomelanous testa.Шаблон:Sfn

Etymology

The name Hippeastrum was first given to the genus by Herbert,Шаблон:Sfn being derived from the Ancient Greek,[6] meaning a "knight's star" from ἱππεύς (hippeus, mounted knight) and ἄστρον (astron, star), to describe the first recognized species, Hippeastrum reginae. Herbert proposed to call the genus, which he distinguished from Linnaeus' Amaryllis, Hippeastrum, or "knight's-star-lily". He states;

"I have named [them] Hippeastrum or Knights-star-lily, pursuing the idea which gave rise to the name Equestris" (p.12).Шаблон:Sfn

Herbert's fourteen species included this Hippeastrum equestre.[6] This 'equine' connection refers to Carl Linnaeus the Younger who had named (in an unpublished manuscript) a West Indian species as Amaryllis equestris, because of its similarity to the African genus Amaryllis. This name and attribution was first published by William Aiton in 1789, in his Hortus Kewensis.[7] Which species this was is not known precisely. However, in 1795 William Curtis, described Amaryllis equestris or the Barbados lily in his Botanical Magazine, referring to Aiton:

Шаблон:Blockquote

In 1803 John Sims claimed Curtis had made a mistake in this attribution, and that;

"this name was given from the remarkable likeness the front view of it has to a star of some of the orders of knight-hood; an appearance well expressed by JACQUIN's figure in the Hortus Schoenbrunnensis"Шаблон:SfnШаблон:Sfn

Despite much speculation, there is no definitive explanation of either Linnaeus fils or Herbert's thinking. For instance the 'knight's star' has been compared to Linnaeus' decoration as a Knight of the Order of the Polar Star.[8] The Latin word equestris (of a knight, or horseman) may have been confused with equi (of a horse), or possibly Herbert was making a literary knight's move on the Linnaean term.[6] The flower name has even been compared to the mediaeval weapon, the spoked mace or Morning Star which it superficially resembles.[9]

Common name

Although the 1987 decision settled the question of the scientific name of the genus, the common name "amaryllis" continues to be used. Bulbs sold as amaryllis and described as ready to bloom for the holidays belong to the genus Hippeastrum.[6]Шаблон:Sfn "Amaryllis" is also used in the name of some societies devoted to the genus Hippeastrum.Шаблон:Sfn Separate common names are used to describe the genus Amaryllis, e.g., "Naked Lady".[10]

Шаблон:AnchorTaxonomy

Separation of Hippeastrum from Amaryllis

The taxonomy of the genus is complicated. The first issue is whether the name should more properly be Amaryllis L.. In 1753 Carl Linnaeus created the name Amaryllis belladonna, the type species of the genus Amaryllis, in his Species Plantarum along with eight other Amaryllis species.Шаблон:EfnШаблон:Sfn Linnaeus had earlier worked on the Estate of George Clifford near Haarlem between 1735 and 1737 describing the plants growing there in his Hortus Cliffortianus in 1738.Шаблон:Sfn It is to this work that he refers in his Species Plantarum.[11] This was assumed to be the South African Cape Belladonna, although not precisely known.Шаблон:Sfn Clifford's herbarium is now preserved at the Natural History Museum in London.Шаблон:Sfn

At the time both South African and South American plants were placed in this same genus. By the early nineteenth century Amaryllis had become a polymorphic (diverse) genus with about 50 species from what we would consider a dozen genera today, and attempts were made to separate it into different genera.Шаблон:Sfn This work commenced in 1819 with the contributions of the English botanist, the Revd. William Herbert in Curtis's Botanical MagazineШаблон:Sfn which he expanded in 1821 in The Botanical Register, identifying 14 species of the new genus of Hippeastrum, and only leaving three species in Amaryllis. The rest of the Amaryllis species he transferred to other genera, several of which he created.Шаблон:Sfn Herbert further refined his descriptions of Hippeastrum in his work on the Amaryllidaceae in 1837.Шаблон:Sfn

Nomenclature debate

Since then a key question has been whether Linnaeus's original type was a South African plant (now Amaryllis) or a South American plant (now Hippeastrum). If the latter, the correct name for the genus Hippeastrum would then be Amaryllis and a new name would need to be found for the South African genus. In 1938 Johannes Cornelius Theodorus Uphof (JCT Uphof) claimed, with some evidence,Шаблон:Sfn that the plant was in fact the South American Hippeastrum equestre (Linn. fil.) Herb. (syn. Amaryllis equestris (Linn. fil.) ex Aiton, accepted name H. puniceum)Шаблон:SfnШаблон:Sfn a plant which Carl Linnaeus' son, Linnaeus the Younger (Linn. fil.) had described c. 1781-3 (unpublished)Шаблон:Sfn but soon after appearing in the Hortus Kewensis of 1789. This paper sparked a debate over the next half century, that delayed the official transfer of species from Amaryllis to Hippeastrum. This debate involved botanists on both sides of the Atlantic and the outcome was a decision by the 14th International Botanical Congress in 1987 that Amaryllis L. should be a nomen conservandum (conserved name, i.e., correct regardless of priority) and ultimately based on a specimen of the South African Amaryllis belladonna from the Clifford Herbarium. Thus Amaryllis L. is the correct name for the South African genus, not the South American genus (Hippeastrum).Шаблон:Sfn

Claim for Leopoldia

The second issue is whether the name should be Leopoldia. In 1819 Herbert had proposed Leopoldia as a nomen provisorium (provisional name)Шаблон:Sfn for the same taxon as he called Hippeastrum in 1821.Шаблон:SfnШаблон:Sfn Although Leopoldia was subsequently validated (i.e., became the correct name), this was overlooked, and Hippeastrum rather than Leopoldia was used for the genus of New World amaryllids. Following Filippo Parlatore in 1845, the name Leopoldia was used for a genus of grape hyacinth species, allied to Muscari. In order to preserve the widespread usage of both Hippeastrum and Leopoldia, Fabio Garbari and Werner Greuter proposed in 1970 that Herbert's Hippeastrum and Parlatore's Leopoldia should be conserved and Herbert's Leopoldia rejected. This was accepted and Hippeastrum Herb. is now a nomen conservandum (conserved name), i.e., the correct name regardless of the fact that it does not have priority over Leopoldia.Шаблон:SfnШаблон:Sfn[12]

Intergeneric hybrids

While interspecific hybrids of Hippeastrum are relatively common, hybridization with other genera of Amaryllidaceae are more rare. The most conspicuous exception is the hybrid obtained through crossbreeding with the Mexican Sprekelia formosissima (St James's lily, Aztec lily, Jacobean lily), another member of the tribe Hippeastreae, originally called Amaryllis formosissima, which is apomictic. × Hippeastrelia is the name given to this cross.[6]Шаблон:SfnШаблон:Sfn[13]

Subgenera

A number of subgenera have been proposed over the years. For instance in the 1870s and 1880s John Gilbert Baker considerably reorganised Hippeastrum. In 1878 he described nine sections of the genus,Шаблон:Sfn but by 1888 he included seven subgenera, namely (number of species in parentheses) Habranthus (10), Phycella (3), Rhodophiala (5), Macropododastrum (1), Omphalissa (6), Aschamia (10) and Lais (3), some of which have since been treated as separate genera (Habranthus, Rhodophiala).Шаблон:Sfn Baker both reduced the original number of species of Herbert, but also enlarged the genus by adding in other genera such as Habranthus, Phycella, Rhodophiala and Rhodolirion (also called Rhodolirium, and subsequently moved to Rhodophilia),[14] which he included as separate sections of Hippeastrum. In addition, he included many new species being discovered in South America, particularly Chile. His 1878 classification included 47 species, reduced to 38 by 1888. These subgenera were not widely used due to indistinct boundaries of some of the divisions.[15] For reference, these were:[8]Шаблон:SfnШаблон:SfnШаблон:Sfn

  • Aschamia (Salisb.) Baker (e.g. H. reginae, H. andreanum, H. scopulorum, H. mandonii, H. leopoldii, H. reticulatum, H. stylosum)
  • Cephaleon Traub (e.g. H. machupijchense)
  • Lais (Salisb.) Baker (e.g. H. striatum, H. vittatum, H. breviflorum)
  • Macropodastrum Baker (e.g. H. elegans)
  • Omphalissa (Salisb.) Baker (e.g. H. aulicum, H. psittacinum, H. calyptratum, H. cybister, H. pardinum, H. miniatum, H. iguazuanum)
  • Sealyana Traub (e.g.: H. reticulatum)

Following a major recircumscription of Hippeastreae, Hippeastrum was once again formally divided into two subgenera, by the inclusion of the three species of Tocantina:Шаблон:Sfn

  • Tocantinia (Ravenna) Nic.García (3)
  • Hippeastrum (~100)

Selected species

Шаблон:Main

Шаблон:As of, the World Checklist of Selected Plant Families accepts 91 species:Шаблон:Sfn Garcia et al. (2019) estimate approximately 100 species in subgenus Hippeastrum, together with 3 in subgenus Tocantinia.Шаблон:Sfn

Шаблон:Div col

Шаблон:Div col end

Unplaced names include Hippeastrum ugentii,Шаблон:Sfn considered in the Kew World Checklist of Selected Plant Families as probably a Crinum.

Hybrids include Hippeastrum ×johnsonii. Шаблон:Gallery

Distribution and habitat

Hippeastrum species are concentrated in two centres of diversity, the main one in Eastern Brazil and the other in the central southern Andes of Peru, Bolivia and Argentina, on the eastern slopes and nearby foothills. Some species are found as far north as Mexico and the West Indies.Шаблон:Sfn The genus is thought to have originated in Brazil where at least 34 of the species have been found.Шаблон:Sfn Their habitat is mainly tropical and subtropical, though those species found south of the equator, or at sufficient altitude may be considered temperate.Шаблон:Sfn Hippeastrum is found in a wide range of habitats. Many are found in underbrush, while others prefer full sun. Hippeastrum angustifolium is an example of a species preferring flood areas, while other species prefer a drier habitat. There are also epiphytic species, such as Hippeastrum aulicum, Hippeastrum calyptratum, Hippeastrum papilio and Hippeastrum arboricola, which require air circulation around their roots,[8] which are in the subgenus Omphalissa.[16]

Ecology

Reproduction

Species are generally diploid with 2n=22 chromosomes, but some species, such as Hippeastrum iguazuanum, have 24.Шаблон:Sfn The genus has a degree of interspecies intercompatibility allowing crossing.Шаблон:SfnШаблон:Verify source

Some species, such as the Uruguayan Hippeastrum petiolatum, are sterile and unable to produce seeds. H. petiolatum is a sterile triploid that reproduces asexually, producing many bulbils around the mother bulb. These are light, and easily carried on the surface of water ensuring distribution of the species during the rainy season. Other species such as Hippeastrum reticulatum are self-pollinating, reproducing by distributing seed. Although this does not guarantee genetic diversity in natural populations, it is widely used by colonising species. These two examples are not however typical of the genus, which commonly reproduces through allogamy. One mechanism that limits self-pollination is that of self-incompatibility by which seeds are only produced by pollination from other plants.[17]Шаблон:Sfn Furthermore, the plant generally releases its pollen about two days before its stigma is receptive, making cross-pollination more likely.[17] Pollinators include hummingbirds in subtropical areas, and moths.[6]

Pests

Hippeastrum species are used as food plants by the larvae of some Lepidoptera species including Spodoptera picta (crinum grub)[18] as well as Pseudococcidae (mealybugs), large, and small narcissus bulb flies (Eumerus strigatus and E. funeralis), thrips, mites, aphids, snails and slugs.[19]Шаблон:SfnШаблон:Sfn[20] A fungal disease attacking Hippeastrum is Stagonospora curtisii (red blotch, red leaf spot or red fire).[21] The leaves are also eaten by grasshoppers, and grasshoppers commonly plant egg pods in the ground near Hippeastrum bulbs, which erupt in the spring, covering the plant with nymphs.

Conservation

The following species were considered threatened or vulnerable by degradation of their natural habitat, according to the International Union for Conservation of Nature (IUCN)Шаблон:Sfn Red List of Threatened Species[22] in 1997.[23]

  • Hippeastrum arboricolum (Argentina)
  • Hippeastrum aviflorum (Argentina)
  • Hippeastrum canterai (Uruguay)
  • Hippeastrum ferreyrae (Peru)
  • Hippeastrum petiolatum (Argentina & Brazil)

Cultivation

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Hippeastrum bulb, with young shoot
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Hippeastrum grown in pot

Hippeastrum cultivars and species can be grown inside in pots or outside in warmer climates (Hardiness 7B-11).Шаблон:Sfn Many will bloom year after year provided they are given a dormant period in a cool, dark place for two months without water or fertilizer although some bulbs will start growing before the two-month period is up.[24]

The bulb is tender and should not be exposed to frost, but is otherwise easy to grow with large rewards for small efforts, especially those that bloom inside during the winter months. Note too, that Hippeastrum can also be grown in the ground in temperate areas. Bulbs are usually sold in fall for early winter bloom. Bare-root bulbs do best planted in a pot only slightly larger than the circumference of the bulb in well-drained, organic mix (such as sterilized potting soil plus coir fiber, or equal amounts of peat moss, sand and humus), with one third of the bulb visible above the surface of the soil and two thirds buried.[24]

After planting, sprouting requires a warm place (about 20 °C). Bulbs need light watering until the leaves and buds emerge, and need to be situated in a well-lit, cool place and watered as needed to maintain moderate soil moisture. Overwatering will cause bulb and root rot. Plants may be fed with common fertilizers that contain iron and magnesium. Blooming takes place about two months after planting. The plant's leaves should continue to grow after the flowers have faded. Summering outdoors in four or five hours of direct sunlight, plus fertilizing lightly as the season progresses, will help develop buds for the next year.[24]

Breeding and propagation

Intense cultivation of a number of species, particularly from Brazil, Bolivia and Peru, has occurred because of the appearance and size of the flowers, resulting in many hybrids and cultivars.Шаблон:Sfn

History

Hippeastrum breeding began in 1799 when Arthur Johnson, a watchmaker in Prescot, England, crossed Hippeastrum reginae with Hippeastrum vitattum, obtaining hybrids that were later given the name Hippeastrum × 'Johnsonii' [25] (Johnson's amaryllis, 'hardy amaryllis' or St. Joseph's lily). Johnson shared his work with the Liverpool Botanic Garden which was fortunate, since his greenhouse was destroyed in a fire. His hybrid was being cultivated in the US by the mid-nineteenth century.Шаблон:Sfn[19][26][27] Many new hybrid lines followed as new species were sent to Europe from South America, the most important of which were Reginae and Leopoldii.Шаблон:Sfn

The Reginae strain hybrids were produced by Jan de Graaff and his two sons in the Netherlands in the mid-19th century by crossing Hippeastrum vitatum and Hippeastrum striatum with Hippeastrum psittacinum and some of the better hybrids available in Europe at the time. Some of the most successful hybrids were Graveana and Empress of India.Шаблон:SfnШаблон:Sfn

Leopoldii hybrids arose from the work of the British explorer and botanist Richard Pearce, an employee of James Veitch & Sons, a plant nursery. Pearce brought back specimens of Hippeastrum leopoldii and Hippeastrum pardinum from the Andes. These two species were notable for large flowers that were wide open and relatively symmetrical. Crossing these two species with the best of the Reginae strain produced a lineage of very large open flowered specimens, with up to 4-6 flowers on each scape. The Veitch nursery dominated the commercial development of Hippeastrum leopoldii and other varieties up to the early years of the twentieth century, the best of their hybrids setting the standard for modern commercial development.Шаблон:SfnШаблон:SfnШаблон:Sfn

The late 19th and early 20th centuries saw Amaryllis breeding develop in the United States, particularly in Texas, California, and Florida in conjunction with the USDA (1910–1939). The major US contribution came from the work of Henry Nehrling and Theodore Mead, whose hybrids crossed with Dutch stock have produced some modern hybrids, although not matching the European strains.Шаблон:Sfn

In 1946, two Dutch growers moved to South Africa and began cultivation there. Although most cultivars of Hippeastrum come from the Dutch and South African sources, bulbs are now [when?] being developed in the United States, Japan, Israel, India, Brazil and Australia. Nurseries may list Amaryllis bulbs as being 'Dutch', 'Israeli', 'Peruvian' etc., depending on the country of origin.[6][19]

Most modern commercial hybrids are derived from the following species:Шаблон:Sfn

  • H. vittatum
  • H. leopoldii
  • H. pardinum
  • H. reginae
  • H. puniceum
  • H. aulicum

Propagation

Файл:Hippeastrum-seeds.jpg
Hippeastrum seeds

Three main methods are used for propagating Hippeastrum: seeds, bulbils and 'twin scales'. More recently [when?], micropropagation in vitro has been used on a commercial scale.

Seeds

The seeds are contained in a thin dark brown/black paper like fleche, that might easily blow away with some wind. Seed multiplication may be used for the development of new cultivars or to increase the yield of native species. Seeds are generally sown in early summer in seedbeds, and then transplanted to larger containers. They require warmth, frequent watering, and should not be given a dormant period. Seeds do not breed true. Plants obtained from seeds take about six years to bloom. [19]

Bulbils

Home propagation is best performed by using offset bulbils. Commercially, only cultivars that produce at least three bulbils on the mother bulb are used for this form of propagation. Plants grown from this method take three to four years to bloom.[19]

Twin scales

The most common commercial propagation method is referred to as 'twin scales'. This involves the division of the bulb into 12 sections and then separating each section into twin scales connected by the basal plate.Шаблон:Sfn The cuttings that are derived from these are grown in moist vermiculite in the dark till bulbils appear. More recently [when?] growing them in sunlight has been found to produce a better crop.Шаблон:Sfn

In vitro

The technique of plant tissue culture in vitro improves the propagation of Hippeastrum by decreasing the time required to reach the minimum size to start the reproductive cycle, using sections of bulbs grown in artificial media with the addition of plant hormones.Шаблон:SfnШаблон:SfnШаблон:Sfn

Fragrance

Файл:Hippeastrum vittatum flowering.jpg

Most modern cultivars lack any fragrance, although 'Dancing Queen' represents an exception.Шаблон:Sfn Fragrance is genetically related to flower colour (white, or pastel shades) and is a recessive characteristic, so that when fragrant and non fragrant varieties are crossed, not all progeny will be fragrant, whereas two fragrant progenitors will produce an all fragrant progeny.Шаблон:Sfn

Flowering

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Single Hippeastrum
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Double Hippeastrum

Hippeastrum hybrids and cultivars are valued for their large ornamental flowers, particularly for indoor cultivation during the northern hemisphere winter. The larger the bulb, the more flowers it will produce. The largest bulbs measure 14 to 16 inches (36 to 41 cm) in circumference and will produce three or more scapes (flower stems) with four or more blooms each. The commonest bulbs measure Шаблон:Frac to Шаблон:Frac inches (27 to 32 cm) with two scapes with four to six flowers each depending on the cultivar. Some bulbs put up two flower scapes at the same time; others may wait several weeks between blooms and sometimes the second scape will have only two or three flowers rather than the usual four. A bulb needs to produce large, healthy leaves in the summer growing season before it can send up a scape the following year. Bulbs are often described by the country of origin of the bulb producers, since they may have different characteristics, e.g. 'Dutch Amaryllis', 'South African Amarylllis'. Dutch bulbs usually produce flowers first, then, after they have finished blooming (hysteranthous), the plant will begin growing leaves. Bulbs from the South African growers usually put up a scape and leaves at the same time (synanthous).[28]

Of the many hybrids, the best known are those producing flowers with red, pink, salmon, orange and white colors. Other flower colors include yellow and pale green with variations on these including multicoloring, with different colored mottling, stripes or edges on the petals. Some flowers have uniform colors or patterns on all six petals while others have more pronounced colors on the upper petals than on the lower ones.[28][24]

Although many names are used to describe hybrids and cultivars, e.g., 'Large Flowering', 'Dutch', 'Royal Dutch', there are five types that are commonly sold;

  • Single flower (large flowering)
  • Double flower
  • Miniature (dwarf, or small flowering)
  • Trumpet
  • Jumbo (mammoth)

'Trumpets', as the name suggests, have flared, tube-shaped flowers. Single, double, and miniature bulbs are the ones typically sold by nurseries and other stores for the holidays in December and for St. Valentine’s Day and Easter.[19]

Of the commercially available Hippeastrum species, sometimes sold as 'exotic' amaryllis, Hippeastrum cybister has extremely thin petals often described as spider-like. The miniature evergreen Hippeastrum papilio or "butterfly amaryllis" whose petals resemble a butterfly (papilio) has a unique color and pattern with broad rose-burgundy center stripes and striations of pale green on the upper petals and narrow stripes on the bottom three. It has been crossed with both cybister and single flower cultivars to produce hybrids with unusual striping.[28]Шаблон:Sfn

Dormancy

Hippeastrum bulbs can be induced to rebloom yearly by mimicking the conditions in its natural environment (cool dry winters). When foliage starts to yellow, dormancy can be induced by withholding water and placing the plant in a cool Шаблон:Convert dark place for six to ten weeks or until buds start to show. Even when plants are thriving outdoors in temperate climates, dormancy can be induced by withholding water and fertilizer in the northern hemisphere autumn, and bringing indoors to a cool environment prior to the first frost. Leaves will usually wither during this period and a flower stem begin to emerge after eight to ten weeks.

Bulbs can then be brought back into light, inspected for pests or rot, and repotted in fresh soil after cutting foliage to about Шаблон:Nowrap above the bulb. Subsequent care is as for new bulbs, as described above. Best results are obtained by transplanting every three to four years.[12][19]Шаблон:SfnШаблон:Sfn

Cultivars

The cultivar 'Clown' (Double Galaxy Group)[29] (white with red stripes) has received the Royal Horticultural Society's Award of Garden Merit.

Gallery

Шаблон:Gallery

Uses

Файл:Amaryllis-DancingQueen.jpg
Hippeastrum 'Dancing Queen' flowering indoors in January

Cultivars of Hippeastrum are popular indoor ornamental plants prized for their large brightly colored flowers (including red, pink, salmon, orange and white). As such they have a very important place in the floriculture trade for sale as cut flowers or potted plants. Although the market is dominated by the Netherlands,Шаблон:Sfn and South Africa,Шаблон:Sfn other areas of production include Israel, Japan and the United States (Florida).Шаблон:Sfn Brazil also produces 17 million Hippeastrum bulbs annually.[30]

Hippeastrum has yielded at least 64 isoquinoline alkaloids, which include anti-parasitic (e.g. candimine)Шаблон:Sfn and psychopharmacological activity due to their high alkaloid content.Шаблон:SfnШаблон:Sfn One alkaloid isolated from Hippeastrum vittatum (montanine) has demonstrated antidepressant, anticonvulsant and anxiolytic properties.Шаблон:SfnШаблон:Sfn Hippeastrum puniceum may also have therapeutic properties as it has been used in folk medicine to treat swellings and wounds.Шаблон:Sfn

Symbolism

A stylized flower of a Hippeastrum cultivar (under its common name of amaryllis) is used internationally as a symbol for organizations associated with Huntington's disease, a genetic degenerative disease of the nervous system.[31]Шаблон:SfnШаблон:Sfn The widely used logo represents a double image of a head and shoulders as the flower of a growing and vibrant plant. The reduced size of the inner head and shoulders image symbolizes the diminution in a person caused by Huntington's disease. The leaves represent the protection, purpose, growth and development of the Huntington's community worldwide in its search for a cure and treatment.Шаблон:Sfn

See also

Notes

Шаблон:Notelist

References

Шаблон:Reflist

Bibliography

Шаблон:Refbegin

Books

General

Historical sources (chronological)

Specific

Articles and theses

Gardening journals

Websites

Databases

Organisations

Шаблон:Refend

External images

Шаблон:Commons Шаблон:Wikispecies

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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Kew_funnelform не указан текст
  2. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Kew_declinate не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок jstor не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Kew_fimbriae не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Kew_pluriovulate не указан текст
  6. ↑ 6,0 6,1 6,2 6,3 6,4 6,5 6,6 Ошибка цитирования Неверный тег <ref>; для сносок Math99 не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Aiton не указан текст
  8. ↑ 8,0 8,1 8,2 Ошибка цитирования Неверный тег <ref>; для сносок amaryllidaceae-Hippeastrum не указан текст
  9. ↑ Шаблон:CitationШаблон:Full citation needed
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Wils05 не указан текст
  11. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Linn37 не указан текст
  12. ↑ 12,0 12,1 Ошибка цитирования Неверный тег <ref>; для сносок usna не указан текст
  13. ↑ Ошибка цитирования Неверный тег <ref>; для сносок PBS_XH не указан текст
  14. ↑ Ошибка цитирования Неверный тег <ref>; для сносок troprhodolirion не указан текст
  15. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Kubitzki не указан текст
  16. ↑ Ошибка цитирования Неверный тег <ref>; для сносок amaryllidaceae-epiphyt не указан текст
  17. ↑ 17,0 17,1 Ошибка цитирования Неверный тег <ref>; для сносок amaryllidaceae-reproSX не указан текст
  18. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Hippeastrum.com-pests не указан текст
  19. ↑ 19,0 19,1 19,2 19,3 19,4 19,5 19,6 Ошибка цитирования Неверный тег <ref>; для сносок rhs не указан текст
  20. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MHF не указан текст
  21. ↑ Ошибка цитирования Неверный тег <ref>; для сносок PBS не указан текст
  22. ↑ Ошибка цитирования Неверный тег <ref>; для сносок iucnred не указан текст
  23. ↑ Ошибка цитирования Неверный тег <ref>; для сносок iucnred97618 не указан текст
  24. ↑ 24,0 24,1 24,2 24,3 Ошибка цитирования Неверный тег <ref>; для сносок infoam не указан текст
  25. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Hippeastrum.com-johnsonii не указан текст
  26. ↑ Ошибка цитирования Неверный тег <ref>; для сносок smgrowers не указан текст
  27. ↑ Ошибка цитирования Неверный тег <ref>; для сносок bulbsoc не указан текст
  28. ↑ 28,0 28,1 28,2 Ошибка цитирования Неверный тег <ref>; для сносок ps не указан текст
  29. ↑ Шаблон:Cite web
  30. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Kamenetsky не указан текст
  31. ↑ Ошибка цитирования Неверный тег <ref>; для сносок hscam не указан текст
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:Hippeastrum&oldid=15249511