Ceropegia sandersonii Decne. ex Hook. f.

Dies ist eine der wenigen Arten die sehr häufig im ‘normalen’ Handel angeboten werden. Dort stehen sie dann meist in viel zu nasser, matschiger Blumenerde und haben oft schon sämtliche Wurzeln verloren, blühen aber trotzdem munter vor sich hin.

Die Blüten selbst können sich wirklich sehen lassen, ihr Aussehen wird gern mit einem Fallschirm verglichen. Man könnte ihre Form aber auch mit einem asiatischen Tempel vergleichen.

Eine besondere Lokalform kann man im Handel unter dem Namen Ceropegia monteroie finden, bei ihr sind die Blüten meist völlig grün, an den ‘Dachfenstern’ hängen violette ‘Gardinen’.

Manchmal findet man im Handel aber auch völlig andere Arten unter diesem Namen.

~~~

Trotzdem sie eine so häufige Art ist, sind Ceropegia sandersoniis Blüten und deren Bestäubungsmechanismen erst kürzlich (2016) wissenschaftlich untersucht worden.

Die Blüten duften stark, ziehen aber keine Bienen an, sie imitieren diese! Sie riechen tatsächlich nach Honigbienen in Lebensgefahr und ziehen somit kleine kleptoparasitische Fliegen der Familie Milichidae an, die an Honigbienen fressen, die von Spinnen erbeutet wurden. [1]

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Ceropegia sandersonii Decne. ex Hook. f.

This is one of the very few species that can commonly be found in the ‘normal’ trade. The substrate is then often a much to wet potting compost and most of the roots have died, the plants themselves, nevertheless, still look still fine and are in bloom.

The flowers of nearly all clones are very impressive, their appearance reminds on a parachute. The form could also be compared with a Asian temple.

A special local form can be found in trade under the name Ceropegia monteroie, this form has green flowers and the ‘dormer windows’ have purple ‘curtains’.

Sometimes even quite different species can be found in trade under this name.

~~~

Despite the fact of being a so common species, Ceropegia sandersoniis flowers and their pollination mechanisms were only recently (in 2016) analyzed scientifically.

The flowers are very fragrant, yet do not attract bees, no, they imitate them! They actually smell like honeybees in mortal danger, thus attracting little kleptoparasitic flies from the family Milichidae, that are well known to feed on honeybees that are eaten by spiders. [1]

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Referenzen / References:

[1] Annemarie Heiduk; Irina Brake; Michael von Tschirnhaus; Matthias Göhl; Andreas Jürgens; Steven D. Johnson; Ulrich Meve; Stefan Dötterl: Ceropegia sandersonii mimics attacked honeybees to attract kleptoparasitic flies for pollination. Current Biology. 2016

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c-sandersonii-ub

Foto / Photo: Ulrich Bangert; mit freundlicher Genehmigung von / by courtesy of Ulrich Bangert

http://www.ulrichbangert.de/index_kakteen.htm

photo of the week – Ceropegia sandersonii

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c-sandersonii-md-111116-1

Photo: Maya Dumat

(under creative commons licence (2.0))
http://creativecommons.org/licenses/by/2.0

And another one …

You can never have too many Ceropegias, this Ceropegia sandersonii is slightly different from my three other plants, so I just could not resist ….   😉

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… just for no reason ….

This is what my Ceropegia sandersonii looks right now!   🙂

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Today …

… was a good day – I found a strinking clone of Ceropegia sandersonii; very large, yellowish flowers with brown markings on the tube.

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Ceropegia sandersonii x nilotica

Diese Form ist eine der wenigen, echten Naturhybriden der Gattung.

Der Hybrid tauchte zuerst in Kultur auf, muss aber als Naturhybrid betrachtet werden, da die Pflanzen auf Samen zurückgehen, die in der Natur gesammelt wurden, genauer von einer Ceropegia sandersonii Decne. ex Hook. f. aus den Makatini Flats in KwaZulu-Natal in Südafrika.

Die Pflanze wurde bereits in R. A. Dyers ‘Ceropegia, Brachystelma and Riocreuxia in southern Africa’ abgebildet (als Ceropegia grandis E. A. Bruce). [1][2]

~~~

Das Foto zeigt eine kultivierte Pflanze die wahrscheinlich diesen Hybrid darstellt.

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Ceropegia sandersonii x nilotica

This form is one of very few true natural hybrids within this genus.

The hybrid appeared first in cultivation, yet is still to be regarded as a natural hybrid since the plants originated from seed that was collected in the wild, to be more precise from a Ceropegia sandersonii Decne. ex Hook. f. growing in the Makatini Flats in KwaZulu-Natal in South Africa.

The plant was already depicted in R. A. Dyers ‘Ceropegia, Brachystelma and Riocreuxia in southern Africa’ (as Ceropegia grandis E. A. Bruce). [1][2]

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The photograph shows a plant in cultivation that probably represents this hybrid.

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References:

[1] R. A. Dyer: Ceropegia, Brachystelma and Riocreuxia in southern Africa. A A Balkema Publishers 1983
[2] Ralph Peckover: The Ceropegias of the Makatini Flats. Aloe 30(1): 20-22. 1993

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c.nilotica.x.sandersonii.fhut

Photo: Friedericke Hübner & Ulrich Tränkle; by courtesy of Friedericke Hübner & Ulrich Tränkle

www.asclepidarium.de

the old picture – Ceropegia monteiroae

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c.monteiroae.cbm

Ceropegia sandersonii Decne. ex Hook. f.

Depiction from: ‘Curtis’s Botanical Magazine 113. 1887’

http://www.biodiversitylibrary.org

Ceropegia x rothii Gürke

As far as I know, this is the first true artifical hybrid in the genus Ceropegia, that means it was made by hand pollinating, which is very complicated.

The pollen of Ceropegia radicans Schltr. was used to successfully pollinate Ceropegia sandersonii Decne. ex Hook. f., the offspring was named Ceropegia x rothii, a hybrid that is still very commonly cultivated. [2]

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References:

[1] M. Gürke: Ceropegia sandersoni Hook. x radicans Schlecht. (C. rothii Gürke n. hybr.). Monatszeitschrift für Kakteenkunde 21(1): 8-9. 1911
[2] P. Roth: Ueber Ceropegien. Die Gartenwelt 15(25): 337-339. 1911

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c.x.rothii.mg

above:

The plant in front is C. radicans, the two plants behind are C. x rothii.

Photo from: ‘P. Roth: Ueber Ceropegien. Die Gartenwelt 15(25): 337-339. 1911’

http://www.biodiversitylibrary.org

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c.x.rothii.cg

above:

A plant in cultivation which most probably represents this hybrid.

Photo: Cok Grootscholten; by courtesy of Cok und Ine Grootscholten

Copyright Grootscholten Succulenta nursery, Honselersdijk, The Netherlands

http://www.succulenta-kwekerij.nl

Ceropegia hybrida N. E. Br.

This hybrid appeared in cultivation (… and therefore isn’t actually a natural one, by the way …) and was described in 1909, the parents are Ceropegia elegans Wall. (as Ceropegia similis N. E. Br.) as father, and Ceropegia sandersonii Decne. ex Hook. f. as the mother.

The stem is succulent as in C. sandersonii, the leaves are smaller than in either parent, the flowers are very like those of the numerous other C. sandersonii hybrids, which can be found. [1]

This hybrid is also known by the name of Ceropegia meyeri-arthuri Herter. [2][3]

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References:

[1] N. E. Brown: Ceropegia hybrida, N. E. Brown (a new natural hybrid), and C. similis, N. E. Brown (n. sp.). The Gardeners’ Chronicle 3(40): 383-384. 1909
[2] M. Gürke: Ceropegia sandersoni Hook x radicans Schlecht. (C. rothii Gürke n. hybr.). Monatszeitschrift für Kakteenkunde 21(1): 8-9. 1911
[3] P. Roth: Ueber Ceropegien. Die Gartenwelt 15(25): 337-339. 1911

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c.x.hybrida.neb

above:

Depiction from: ‘N. E. Brown: Ceropegia hybrida, N. E. Brown (a new natural hybrid), and C. similis, N. E. Brown (n. sp.). The Gardeners’ Chronicle 3(40): 383-384. 1909′

http://www.biodiversitylibrary.org

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c.x.hybrida.cg

above:

A plant in cultivation that obviously fits very well with the description.

The colouration of the flower of C. hybrida is described as follows: green at the base, light green above, and the funnel-shaped part white, marked with five broad, dull green stripes, alternating with five series of connected purple-brown spots.

Photo: Cok Grootscholten; by courtesy of Cok und Ine Grootscholten

Copyright Grootscholten Succulenta nursery, Honselersdijk, The Netherlands

http://www.succulenta-kwekerij.nl

… the first time

My very first Ceropegia sandersonii of the ‘monteiroae‘ clone, and its very first flower. 😛

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