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an oldy,taken in the Hortus,Haren

Joseph Franz Jacquin (1761-1839) in his fine catalogue (and illustrations), 1811-1816, of rare or little known plants gives a very good colored drawing of our plant. There's some discussion about who first scientifically described it. Some say it was intrepid explorer William Bartram (1739-1823) in his famous book on the natural history of the southeastern states of the US and also their native inhabitants (1773-1778). But if you turn to those pages the description doesn't quite fit the plant: its flowers are said to be rose. So naturalist Thomas Walter (1740-1789) would seem to be its author. Jacquin mentions someone else again, famous André Michaux (1746-1802); but he, too, was a Continental; and besides, in those days there was no internet to compare notes. In any case, the shrub hails from the Savannah River.

And it's quite at home as well in the Amsterdam Hortus Botanicus.

Hortus Botanicus

Plantage Middenlaan

Amsterdam

 

20230611 009117-2

This pretty flower is now in the Dry Tropical Greenhouse of the Hortus. I've photographed it before outdoors and gave a description (www.flickr.com/photos/87453322@N00/43203994585/in/photoli...).

  

Those wonderful purple-mauve flowerheads of Artichoke attract lots of insects. Bees of many kinds, but also flies among which really tiny ones. I think this is a Drosophilid clutching a flower petal but I'm afraid I can't be more specific. Anyone out there in Flickrland? Thanks...

Many years ago I hiked the same route on the Peloponesse of Greece as Constantine Goulimis (1886-1963) a decade or so earlier, although I went from west to east, from Areopolis to Gytheio. Quite probably I saw this beautiful crocus near Vachos... but with too little knowledge I had no idea it was 'special'.

Our crocus was named for Dr Goulimis by William Bertram Turrill (1890-1961) in 1955. Here it is in full Autumn flower in the Hortus Botanicus of Amsterdam.

The foliage of Nicotiana tabacum, Common Tobacco, is particularly green rather late this year. It's now almost in beautifully pink flower (www.flickr.com/photos/87453322@N00/22836771431/in/photoli...).

That green is a nice backdrop for two orange, procreating Cabbage Sawflies, Athalia rosae).

For this time of the year in Amsterdam it's very cold, and it feels like Spring is too slow in bringing Warm Sun. Even these flowers this morning were very blue! But they waved prettily in the brisk wind...

The umbels of Alexanders are composed of numerous pretty, small green flowers with nice white-tipped stamens. They draw lots of foraging insects, notably Hoverflies, and Ants like to collect their sweets.

Here's a Garden Ant, Lasius niger, eating its fill.

This is not the golden brightness most people associate with Tulipa clusiana, which is more a combination of white and pink or red. In 1923 our plant was found by a flower collecting expedition in the very north of India, the union state of Jammu and Kashmir. It was first called only Mountain Tulip and then regarded a hybrid or even a cultivar of Tulipa clusiana. Cell analysis made clear, however, that Chrysantha is a special, natural variety of Clusiana.

And a Golden Beauty at that! In his great description of Tulips of 1803 Pierre-Joseph Redouté writes of Clusiana: 'Cette plante mérite ... d'être cultivée dans les jardins d'ornement.' I would hazard the same is even more true of Chysantha!

No, this pretty succulent is not from Paraguay but possibly from Mexico. The complicated history of its confusing naming for Paraguay dates back to the Green House of one Frank Weinberg at Woodside, Long Island, NY, USA, in 1904. The story has been extensively unraveled by Myron Kimnach and Reid Morgan in 1986 (www.crassulaceae.com/crassulaceae.com/botanik/pflanzen/bo...) so I needn't tell it here.

Compared to the glum summer's day in Amsterdam, the Greenhouse in our Hortus was bright and comforting.

Here's Achira, Canna indica. It hails from South America, and was attested by one of the conquistadores of Peru, Diego Palomino (ca.1506-?) in 1549. He'd seen it in the Cuquimayo Valley (Cusco) and describes it under the Quecha name Achira as one of four root crops of that area (the others are sweet potato, cassava, and racacha). Our plant was first scientifically described (1609) by the Jesuit father, Benabé Cobo (1582-1657). Soon botanists in Europe such as Bauhin, Parkinson, Clusius, and others were writing about it. Parkinson (1629) called it 'The Indian flowring Reede'. And given its colors, that's appropriate.

This Iris is named in Latin for the smell of its bruised leaves which some people experience as 'stinking'; in English the 'Gladdon' is etymologically connected with the Latin for sword, which is how the long narrow leaves are described. The pale purple and white flowers are quite pretty, but the seeds in Autumn dispel some of its darkness.

An advantage of these seeds is that they don't easily drop off and thus the stems with the full pods can easily be used in pretty bouquets to lighten up this time of the year.

In the glum morning I was admiring Eucomis pole-evansii, the Great Pineapple Lily. The 'pole-evansii' is for Welshman Illtyd Buller Pole Evans (1879-1968), appointed to mycology and plant pathology at the Transvaal (South Africa) Department of Agriculture in 1918.

So there I was looking at those pallid fowers. A bit of sunlight and a few Bees were out collecting pollen.

As I watched I startled the Honeybee in the main photo. She lost her bearings and got caught up in a finely constructed spiderweb. In a blinking of my eyes she was already being tightly wrapped and readied for lunch by Spider. Amazingly quickly. About halfway on the right of her enwebbed body you can still make out some of that yellow pollen.

My mother of dear memory once told me that she was seasick for a week on the North Atlantic and that she - who had a great penchant for colors in her flower beds - saw various dark shades of lilac and purple most of the time in her delirium. She'd have been amused by the story of Elias Erici Tillandz for whom this wonderful excentric plant was named. Tillandz (1640-1693) from Finland, as a student traveled from Turku to Stockholm to further his studies. On the way there he is said to have been so dreadfully seasick that he never ventured aboard a ship again. To return home he walked the 1000 kms around the Bothnian Gulf.

Great Carolus Linnaeus, always in for a good story, decided to name a Bromeliad family for Tillandz because the roots of these plants are so shallow that they never need to experience deep water. Of course they live mostly in the jungle and collect water in a variety of other ways.

Olymp decided to be bright in the dimness of the Hortus glasshouse in the autumnal gales. So the photo is a bit more colorful than I'd have wanted. But Olymp doesn't easily take 'no' for an answer...

Together with Johan Huydecoper (1625-1704), a famous mayor of Amsterdam, Jan Commelin (1629-1692) founded the Hortus Botanicus at its present location in 1682. Commelin, the botanist of the two, wrote a catalogue of its plants, the first volume of which was printed in 1697.

In it he describes our African Milkwort as a year-round plant. He says it came to the garden from the Cape of Good Hope through the good offices of Huydecoper. Just as a drawing was being made of it, the plant met with accident. Commelin writes that it could still be drawn but that it died before he could examine its seeds. So the plant in the photo is not descended from Commelin's plant...

 

In other words I do not know the name of this flower I photographed at the Open Garden, "The Wright Place" in Kambah, Canberra, ACT. An overcast and very windy day so I was pleased to get this image without using a tripod. An amazing garden with a series of garden rooms avoiding straight lines where possible.

I now believe this flower is an Osteospermum.

This morning the beautifully blue Chicory flowers in the Hortus Botanicus were full of small Resin Bees, Heriades truncorum (I think). The word 'resin' refers to their use of resin for the cell walls of their nests. According to Jean Louis Rodolphe Agassiz (1897-1873) in his great Nomenclator 'Heriades' is derived from the ancient Greek for wool. Why 'wool' would be descriptive of our Bee, I don't know.

This pretty creature is particularly devoted to yellow aster-like flowers. And you can tell she's been on a visit there. Heriades doesn't gather pollen in corbiculae on her tibias; instead pollen clings to hairs on her abdomen. Here you can clearly see her bright yellow collection.

Chicory has white pollen and the Resin Bees I saw were not collecting it. Rather they were diving deep down into the heart of the flower, presumably for nectar. An after work drink?...

Europe, Netherlands, Zuid Holland, Lieden, Rapenburg, Hortus Botanicus. Hothouse, Tropical plants

 

'De Hortus' is the oldest botanical garden of the Neherlands-- foudend in 1590 by Carolus Clusius. Website: here.

 

It's been a while since i posted Hortus pics, the last time was some 13 years ago: here, here and here.

 

Pieris brassicae

Large white, cabbage butterfly, or cabbage white

Großer Kohlweißling

 

In the Botanical Garden of the University of Vienna

On a trellis of the wind-free wall of the Palm House of the Hortus in the early spring Sun this Blood Pear is about to burst into its pretty blossom. It hails from the mid-Apennines in Italy; the 'cocomerina' is for watermelon. Though the pear has greenish skin, its flesh is pink; hence its English name: 'Blood Pear'.

'Ornament of Greece' was how Theodoros Georgios Orphanides (1817-1886) described his new-found Snowdrop at the International Botanical Congress of 1874 at Florence, Italy. It hails from the Taygetus Mountain Range (Laconia), the middle finger of the Peloponese pointing southward. He gave it the name of much-beloved Olga Constantinova of Russia (1851-1926), Queen Consort of King Georgios I of Greece.

Many snowdrops grow in late Winter or at least after snow has fallen. This one can already flower in October, as here in our Hortus.

in 2019 Anthony Hitchcock (1960-2020) published a wonderfully exciting overview of the 're-establishment' of this Erica, discovered in the Cape, South Africa, in 1767 but extinct in the wild from 1908 (Science and Actions for Species Protection: Noah’s Arks for the 21st Century. Proceedings of the Pontifical Academy of Sciences’ Proceedings of the Workshop of 13-14 May 2019, Chapter 46, eds. Jurgen von Braun, Thomas Kauffels, Peter Raven, Johannes Vogel and Marchello Sánchez Sorondo, Libreria Editrice Vaticana). There's now a shrub of it in the entirely renovated Glass House of the Hortus Botanicus of Amsterdam.

The photo shows a Garden Bumblebee 'stealing' nectar from one of Heath's pretty tubular flowers. Its tongue isn't long enough to access that sweetness through the tube. So it gnaws a tiny hole at the base of the flower that allows it to suck up nectar. I've earlier posted a similar phenomenon but on Aquilegia: www.flickr.com/photos/87453322@N00/47944011838/in/photoli.... Take a look at our Bee's proboscis.

'Cold acidic bogs', that's the description given to the localities of this pretty Bog Laurel. I can relate to that given the chill with rain and winds today in the Hortus and over the new section of Bog Plants (among which many Droseras). This Kalmia was introduced to England in 1767. Great Carolus Linnaeus refers to one of his students who'd collected it in North America. I'm not sure where this Friedrich Adam Julius von Wangenheim (1749-1800) found the plant which is said to be native to Newfoundland, Canada. He was a professional soldier and served in the British Hessian Brigade in North America (1777/8-1785). I understand he kept mainly to the northeast of the US and in what is today Ontario, Canada but he may well have been in Newfoundland as well.

There are lots of Persicarias - in fact, one of them is a special favorite of mine on account of its honey: Buckwheat. This particular flower from the Himalayas intrigues because of its globular flower heads composed of lots of tiny florets. It was first collected 1802/3 by Francis Buchanan-Hamilton (1762-1829). He'd studied medicine in Edinburgh and wrote a thesis on malaria. He became a member of the British East India Company for which he worked 1794-1815 as an explorer, naturalist and physician. Among many publications he wrote an acclaimed An Account of the Kingdom of Nepal (1811) and his botanical finds were published in 1825.

This pretty Knotweed is here being visited by a small Sweatbee, Green or Emerald Furrow Bee.

Often photos of Cape Myrtle show the pretty, crepe flowers (e.g. my www.flickr.com/photos/87453322@N00/32033583714/in/photoli...). But today's fine view of its Autumn Foliage in the Hortus Botanicus is worth a view! Enjoy.

Very white with dark purple almost black anthers on high white filaments, this Small Teasel flower, Dipsacus pilosus. But our Garden Bumblebee, Bombus hortorum is said to be uninterested in flower colors although recent research has shown them to slightly favor yellow . The corollas of this Small Teasel are quite deep - as you can see in the photo - but that should be no problem for this Bee because it has an extraordinary long tongue. Thus it doesn't gnaw at the 'root' of the corolla of these flowers - as other insects and some Bumblebees indeed do. It can access Sweet Nectar directly without damage to the flower. In fact, recently it has also been shown that Bombus hortorum can detect flowers damaged in this way. Thus they avoid these so as to more economically drink from Nectar-Fuller flowers.

In 1837 The Botanical Magazine writes that their pretty colored drawing of our Plant was made by William Henry Harvey (1811-1866). Harvey was an Irish botanist who worked in South Africa 1835-1837 and revisited there 1853-1858. He's the co-author of the first volumes of the important Flora Capensis (1859-1933). The drawing was made from a Tulbaghia flowering in 'the Ludwigsburg garden, at the Cape of Good Hope'. What that garden is called today and where it is, I don't know.

The same entry also says that the 'roots' derived from the Government Gardens (=Company Gardens, I think), where the plant had been presented from an unknown venue a few years previously to Lady Frances Cole (1784-1847). She was the wife of the rather unfortunate governor (1828-1833) of the Cape, Galbraith Lowry Cole (1772-1842). Presumably she'd received this Tulbaghia when he was still in office, so before 1833.

This photo was taken in the Hortus Botanicus of Amsterdam, a repository for plants from South Africa. The violet color is not as common in Tulbaghia as the usual yellow, and I didn't smell garlic... I've written elsewhere on great Linnaeus's derivation of the name

(www.flickr.com/photos/87453322@N00/35164401114/in/photoli...).

There's an ancient Greek story that when the great god Zeus was born on Crete his father Cronos wanted to devour him. His nurse Ida, having hidden him, feared that his hungry dad would hear the infant's cries. She soothed him with sweet white berries. Picking them she scratched her breast and the dripping blood changed the pale berries into Red Raspberry. Zeus, of course, survived. And much later in literary history he's called 'Lord of flies and death' by Jean-Paul Sartre (1905-1980) in his play Les Mouches.

In the photo appropriately, a Flesh Fly is quietly licking a white sepal of luscious Red Raspberry.

As you enter the Tropical Glass House of the Hortus Botanicus in Amsterdam, you will see a staircase on the right and in the cramped space next to it and the main entrance there's a marvellous little terrarium. It holds small tropical plants, orchids and the like, and some Beautiful Poison Dart Frogs, Epipedobates antonyi. I've always wanted to take a closer look, but the glass doors are wisely locked. But today I was in luck because I met the very knowledgable caretaker, Walter den Hollander, who was replanting and generally reworking it. So I got to photograph this beautiful tiny Orchid, only a few centimetres big. Pretty as it is, I'm a bit sceptical as to the label "Pleurothallis prolifera". I've posted Pleurothallis before (www.flickr.com/photos/87453322@N00/16166600306/in/photoli...). In any case, I doubt the 'prolifera'. Anyone out there to enlighten me?

The Handsome Little Frog is Epipedobates anthonyi, Anthony's Poison Dart Frog. It lives just under the pretty Orchid, and the caretaker has buried a small glass container in which he rears fruitflies for Anthony's diet. The name of our Froglet is still in a bit of a flux. Until recently - a decade or so ago - it was called Epipedobates tricolor, but now it's been subsumed under 'anthonyi'. Not long ago, I posted a photo of its cousin in the Artis Zoo: www.flickr.com/photos/87453322@N00/16842747509/in/photoli...

The designation 'anthonyi' is for the American mammalogist Harold Elmer Anthony (1990-1970). There's a lot to tell about this wide-ranging and remarkable, but especially gullible man. Maybe some other time!

 

PS The Hortus authorities might do well to expand that little terrarium...

I watched Honeybee alighting on Winged Everlasting. Flying to and fro between the pretty, papery winged flowers she'd soon gathered lots of orange-yellow pollen. Though our Ammobium loves the sands of south-eastern Australia, it's thriving in the loam of a flower bed in the Hortus. It was first collected in 1804 by the famous Scottish botanist and naturalist traveler Robert Brown (1773-1858), who'd sailed to Australia on HMS Investigator.

What happened between 1665 and 1682 with the plants of the original botanical garden of Amsterdam - a medicinal herb garden especially - I don't know. Fact is that the first prefect of that garden was Johannes Snippendaal (1616-1670). On his appointment he lost no time in making a catalogue of his plants which was published in 1646. In his listing he includes an Apocynum americanum which is today Linnaeus's Asclepias incarnata, a Rose Milkwood which grows in North America. Snippendaal was relieved of his duties in 1656 and the garden was dismantled in 1665; a new one was founded in today's location in the Plantage (1682).

Whether the Milkwood that I photographed this morning in that Garden derives somehow from Snippendaal's original collection... who's to say? The signage suggests as much, but I don't know on what grounds.

 

SN/NC: Dahlia, Syn. Dahlia Pinnata, Asteraceae Family

 

Dahlia (UK: /deɪliə/ or US: /dɑːliə/) is a genus of bushy, tuberous, herbaceous perennial plants native to Mexico. A member of the Asteraceae, dicotyledonous plants, related species include the sunflower, daisy, chrysanthemum, and zinnia. There are 42 species of dahlia, with hybrids commonly grown as garden plants. Flower forms are variable, with one head per stem; these can be as small as 5 cm (2 in) diameter or up to 30 cm (1 ft) ("dinner plate"). This great variety results from dahlias being octoploids—that is, they have eight sets of homologous chromosomes, whereas most plants have only two. In addition, dahlias also contain many transposons—genetic pieces that move from place to place upon an allele—which contributes to their manifesting such great diversity.

 

Otros nombres de la dahlia, xicamiti,

flor de camote. Proviene de las regiones de Cuernavaca y Tepoztlán, en México. Se conocen más de 2 mil variedades diferentes de esta planta. Crece en forma de mata y puede medir desde unos pocos centímetros hasta más de un metro de altura, según la variedad.Dahlia (Reino Unido: /Deɪliə /o us: /dːliə /) es un género de plantas perennes arbustivas, tuberosas y herbáceas nativas de México. Un miembro de las Asteraceae, plantas dicotiledóneas, especies relacionadas incluyen el girasol, la margarita, el crisantemo y la zinnia. Hay 42 especies de Dahlia, con híbridos comúnmente cultivados como plantas de jardín. Las formas de flores son variables, con una cabeza por tallo; Estos pueden ser tan pequeños como 5 cm (2 pulgadas) de diámetro o hasta 30 cm (1 pie) ("plato de cena"). Esta gran variedad resulta de que las dahlias son octoploides, es decir, tienen ocho conjuntos de cromosomas homólogos, mientras que la mayoría de las plantas tienen solo dos. Además, las dahlias también contienen muchos transposones, piezas genéticas que se mueven de un lugar a otro sobre un alelo, que contribuye a su manifestación de tanta diversidad. Anders Dahl, botánico sueco, fue quien introdujo la flor en los países nórdicos y, como homenaje, la flor recibió su nombre. Los holandeses contribuyeron a la expansión de esta flor en Brasil.

 

Dahlia, nome comum dália, é um género botânico pertencente à família Asteraceae. É uma herbácea de porte médio, perene. Quando adulta, a planta chega a atingir até 1,50 metro. É originária do México, onde é muito popular. Os índios daquela região foram os primeiros a cultivar dálias, ainda no período do império Asteca. Por volta do final do século XVIII, o diretor do Jardim Botânico de Madrid encantou-se com a flor, durante uma visita ao México. Foi o suficiente para que a dália atravessasse o oceano e chegasse à Europa, onde se adaptou ao clima temperado. Foi o botânico sueco Anders Dahl, responsável pela expansão das dálias pela região nórdica da Europa, que inspirou o nome da flor. Os holandeses e os franceses foram os maiores incentivadores do cultivo e da produção de inúmeras espécies híbridas de dálias. Os imigrantes holandeses contribuíram para a propagação desta flor no Brasil. Hoje, entre naturais e híbridas, existem mais de 3 000 variedades, com uma diversificação de formas, cores tamanhos e adaptações a diferentes condições.

 

Dahlia, nom commun Dahlia, est un genre de plantes fleurissantes de la famille des marguerites. C'est une herbacée de taille moyenne, vivace. En tant qu'adulte, l'usine atteint jusqu'à 1,50 Metro. Il est originaire du Mexique, où il est très populaire. Les Indiens dans cette région ont été les premiers à cultiver Dahlia, encore dans la période de l'Empire aztèque. Vers la fin du XVIIIe siècle, le directeur des jardins botaniques de Madrid a été enchanté par la fleur, lors d'une visite au Mexique. Il suffisait que le dahlia traverse l'océan et atteigne l'Europe, où il s'adapte au climat tempéré.

C'est le botaniste suédois Anders Dahl, responsable de l'expansion des dahlias par la région nordique de l'Europe, qui a inspiré le nom de la fleur.

 

Dahlia (uk: /deɪliə /of us: /dːliə /) is een geslacht van bossige, knol, kruidachtige meerjarige planten afkomstig uit Mexico. Een lid van de Asteraceae, Dicotyledonous planten, gerelateerde soorten omvatten de zonnebloem, Daisy, Chrysanthemum en Zinnia. Er zijn 42 soorten dahlia, met hybriden die gewoonlijk worden gekweekt als tuinplanten. Bloemvormen zijn variabel, met één kop per stengel; Deze kunnen zo klein zijn als een diameter van 5 cm (2 inch) of tot 30 cm (1 ft) ("bord"). Deze grote variëteit resulteert van dahlia's zijn octoploïden - dat wil zeggen dat ze acht sets homologe chromosomen hebben, terwijl de meeste planten er slechts twee hebben. Bovendien bevatten Dahlias ook veel transposons - generale stukken die van plaats naar plaats op een allel gaan - wat bijdraagt aan hun manifestatie van zo'n grote diversiteit. Anders Dahl, de Zweedse botanicus, was degene die de bloem introduceerde in de Alnend landen en als eerbetoon kreeg de bloem zijn naam. De Nederlanders hebben bijgedragen aan de uitbreiding van deze bloem in Brazilië.

 

Dahlia (Regno Unito: /deɪliə /o us: /dːliə /) è un genere di piante perenni folli, tuberose, erbacee originarie del Messico. Un membro delle Asteraceae, piante dicotyledoni, specie correlate includono il girasole, la margherita, il crisantemo e la zinnia. Esistono 42 specie di dahlia, con ibridi comunemente coltivati come piante da giardino. Le forme di fiori sono variabili, con una testa per stelo; Questi possono essere piccoli come 5 cm (2 pollici) di diametro o fino a 30 cm (1 piedi) ("piatto per la cena"). Questa grande varietà deriva da Dahlias che sono poltoploidi, cioè hanno otto serie di cromosomi omologhi, mentre la maggior parte delle piante ne ha solo due. Inoltre, le dahlia contengono anche molti trasposoni - pezzi generatici che si spostano da un luogo all'altro su un allele - che contribuiscono alla loro manifestazione di tale grande diversità. Anders Dahl, botanico svedese, è stato colui che ha introdotto il fiore nei paesi nordici e come omaggio il fiore ha ottenuto il suo nome. Gli olandesi hanno contribuito all'espansione di questo fiore in Brasile.

 

Dahlia (UK: /DEɪliə /oder USA: /dːliə /) ist eine Gattung von buschigen, knallberechtigen, krautigen Staudenpflanzen, die in Mexiko beheimatet sind. Ein Mitglied der Asteraceae, dicotyledonous -Pflanzen, verwandte Arten umfassen Sonnenblumen, Daisy, Chrysanthemen und Zinnia. Es gibt 42 Arten von Dahlia, wobei Hybriden üblicherweise als Gartenpflanzen angebaut werden. Blütenformen sind variabel, mit einem Kopf pro Stamm; Diese können nur einen Durchmesser von 5 cm oder bis zu 30 cm ("Teller") sein. Diese große Vielfalt resultiert aus Dahlien, die Oktoploide sind - das heißt, sie haben acht Sätze homologer Chromosomen, während die meisten Pflanzen nur zwei haben. Darüber hinaus enthält Dahlien auch viele Transposons - genetische Stücke, die sich von Ort zu Ort auf ein Allel bewegen, was zu ihrer Manifestierung einer so großen Vielfalt beiträgt. Anders Dahl, der schwedische Botaniker, war derjenige, der die Blume in die nordischen Länder vorstellte, und als Hommage bekam die Blume seinen Namen. Die Niederländer trugen zur Ausweitung dieser Blume in Brasilien bei.

 

Dahlia(英国: /deɪliə /またはus: /dgrliə /)は、メキシコに自生したふさふさした、塊状の草本多年生植物の属です。 キク科のメンバーである双子葉植物、関連種には、ヒマワリ、デイジー、菊、Zinniaが含まれます。 42種のダリアがあり、ハイブリッドは一般的に庭の植物として栽培されています。 花の形は可変であり、茎ごとに1つの頭があります。 これらは、直径5 cm(2インチ)または最大30 cm(1フィート)(「ディナープレート」)までです。 この非常に多様性は、ダリアが卵巣であることに起因します。つまり、8セットの相同染色体がありますが、ほとんどの植物は2つしかありません。 さらに、Dahliasには、対立遺伝子の上に場所から場所へと移動するジェネティックな多くのトランスポゾンも含まれています。 スウェーデンの植物学者のアンダース・ダールは、北欧諸国に花を紹介し、オマージュとして花は彼の名前を得た人でした。 オランダはブラジルでのこの花の拡大に貢献しました。

 

Dahlia (المملكة المتحدة: /deɪliə /أو الولايات المتحدة: /dːliə /) هي جنس من النباتات الدائمة الكثبانية ، العشبية الأصلية للمكسيك. عضو في Asteraceae ، والنباتات dicotyledonous ، والأنواع ذات الصلة تشمل عباد الشمس ، و Daisy ، و chrysanthemum ، و Zinnia. هناك 42 نوعًا من داليا ، مع الهجينة التي تزرع عادةً كنباتات حديقة. أشكال الزهور متغيرة ، برأس واحد لكل ساق. يمكن أن تكون هذه القطر صغير مثل 5 سم (2 بوصة) أو ما يصل إلى 30 سم (1 قدم) ("لوحة عشاء"). ينتج هذا التنوع الكبير عن دالياس هو الأخطبوط - أي أن لديهم ثماني مجموعات من الكروموسومات المتماثلة ، في حين أن معظم النباتات لديها اثنتين فقط. بالإضافة إلى ذلك ، يحتوي Dahlias أيضًا على العديد من عمليات النقل - القطع الجينية التي تنتقل من مكان إلى آخر على أليل - والتي تساهم في إظهار هذا التنوع الكبير. كان أندرس دال ، عالم النبات السويدي ، هو الشخص الذي قدم الزهرة إلى بلدان الشمال الأوروبي وكمحية حصلت الزهرة على اسمه. ساهم الهولنديون في توسع هذه الزهرة في البرازيل.

   

Hortus Botanicus, Haren, the Netherlands

Prague, Czech Republic 2019

Eduard August von Regel (1815-1892), director of the Imperial Botanical Garden at St Petersburg, Russia, and his colleague Friedrich August Körnicke (1828-1908), keeper of the Herbarium there, had a sharp eye on their collection of trelitzia augusta. When the plants began to flower in 1858, our formal German Botanists lost their usual scientific cool even in their scholarly description. Miightily surprised, they exclaim: 'Wer hätte nun aber geglaubt, das unter den als Str(elitzia) augusta in den Gärten verbreiteten Pflanzen, zwei ganz verschiedene Arten enthalten seien?' (Who would have thought that two different plants in the garden go under the same name Strelitzia augusta!). They wax eloquent on their find of an unknown Strelitzia and with almost embarrassing unction name it for the Grand Duke Nicholas Nikolaievich (1831-1891), Czar Nicholas I's third son, 'grand protector' of the Gardening Society of St Petersburg.

Strelitzia nicolai must have come undetected in a shipment of plants from southern Africa. In 1889 Curtis's Botanical Magazine notes that it is still unknown from where in southern Africa it hails. Soon afterwards it was determined to grow in eastern regions of southern Africa all the way up through KwaZulu-Natal to Mozambique.

This photo is of a flower in the Tropical Greenhouse of the Hortus in Amsterdam (see inset).

Found in Leiden The Netherlands. In a botantic garden is a flesh eating plant ready for it's meal!

Background by JoesSistahThanks Angela!

 

Enjoy your sunday my friends!

Sending you a big hug!

 

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Vakantie Leiden en Kasteel De Haar.

Hortus botanicus Leiden.

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