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.

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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.

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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 lugardae

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c-lugardae-bs-130117-1

Photo: B. Strohbach

http://www.southernafricanplants.net
(Free use of the information and of the photographs is granted for non-commercial and educational purposes.)

Photo of the week – Ceropegia affinis

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c-affinis-lisa-060117-1

Photo: Lisambanfield; by courtesy of the photographer

http://www.flickr.com/photos/53297503@N07

Ceropegia convolvuloides A. Rich.

Diese nahezu unbekannte und kaum erforschte Art, die im Jahr 1851 beschrieben wurde, ist offenbar in der Region des ‘Horns von Afrika’ endemisch, wo man sie aus Äthiopien und dem Nachbarland Eritrea kennt.

Einige der lokalen Namen in Äthiopien lauten Merokoua oder Merokua bzw. Shabina (in Aari), Teile der Pflanze werden gegessen. [1][2]

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Die Triebe der wüchsigen, windenden Kletterpflanze sind behaart.

Die Blätter ähneln denen von Winden (daher auch der Artname) und ebenfalls behaart. [3]

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Die Art gehört sehr wahrscheinlich zum Verwandtschaftskreis vom Ceropegia abyssinica Decne. und Ceropegia nigra N. E. Br., hat aber auch einiges mit den arabischen Arten Ceropegia foliosa Bruyns und Ceropegia sepium Deflers gemein. [3]

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Ceropegia convolvuloides A. Rich.

This almost unknown and rather un-researched species, which was described in the year 1851, is obvioulsy endemic to the ‘Horn of Africa’ region, where it is known from Ethiopia and from the neighboring Eritrea.

Some of the local names in Ethiopia are Merokoua or Merokua resp. Shabina (in Aari), various parts of the plant are consumed. [1][2]

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The stems of this fast-growing, twining climber are hirsute.

The leaves resemble those of bindweed (thus its species epithet) and are likewise hirsute. [3]

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This species very probably belongs to the species group amongst Ceropegia abyssinica Decne. and Ceropegia nigra N. E. Br., however, it also has some affinities to the Arabian Ceropegia foliosa Bruyns and Ceropegia sepium Deflers. [3]

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Referenzen / References:

[1] Achille Richard: Tentamen Florae Abyssinicae: seu Enumeratio Plantarum hucusque in plerisque Abyssiniae provinciis detectarum et praecipue a beatis doctoribus Richard, Quartin Dillon et Antonio Petit (annis 1838-1843) lectarum. Parisiis: Arthus Bertrand 1851
[2] G. Schweinfurth: Abyssinische Pflanzennamen. Phys. Abh. nicht zur Akad. gehör. Gelehrter. In: Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin II. 1-84. 1893
[3] Focke Albers; Ulrich Meve: Illustrated Handbook of Succulent Plants: Asclepiadaceae. Springer 2002

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c.convolvuloides.rah

Foto / Photo: Richard A. Howard; mit freundlicher Genehmigung von / by courtesy of Rusty Russel, U.S. National Herbarium

http://botany.si.edu

What will happen in 2017?

Well, not much … however, the species descriptions will appear two times within a month, one at the first, the other one at the 15th or so, so there will be 24 species descriptions altogether in the next year.

I’m still very busy with my schooling, but have my exams this year, and hopefully I may find more time then to do some drawings etc..

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c-blueten-2016

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The flowers of 2016 are as follows.:

Ceropegia occulta – 9
Ceropegia cimiciodora – 10
Ceropegia conrathii – 11
Ceropegia multiflora – 13
Ceropegia linearis – 14
Ceropegia rendallii – 22
Ceropegia rhynchantha – 24
Ceropegia rupicola – 29
Ceropegia distincta ssp. haygarthii – 32
Ceropegia decidua – 58
Ceropegia aristolochioides ssp. deflersiana – 78
Ceropegia aristolochioides – 86
Ceropegia inornata – 93
Ceropegia nilotica – 97
Ceropegia africana – 161
Ceropegia linearis ssp. woodii – 284
Ceropegia sandersonii – 549

Botanical drawings – Ceropegia africana

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c.africana.ebr

Ceropegia africana R. Br.

Depiction from: ‘Edwards’s Botanical Register. Vol. 8. London: James Ridgway 1822’

http://www.biodiversitylibrary.org

Photo of the week – Ceropegia linearis ssp. woodii

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c-l-woodii-mh-301216-1

Photo: Martin Heigan

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

Photo of the week – Ceropegia candelabrum

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c-candelabrum-vinayaraj-231216-1

Photo: Vinayaraj

(under creative commons licence (4.0))
http://creativecommons.org/licenses/by/4.0

Landscaping with Ceropegia occulta

In the wild, Ceropegia occulata grows amongst so called Witteberg quartzite, which led to the plant being named locally as the “rock-hugging Ceropegia”.

I do not have an idea what exactly Witteberg quartzite are, but they obviously look quite like the stones that I have found around someone’s house.

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landschaft-leer-171216-1

Here is the supposed ‘landscape’, and one of the Ceropegia occulta next to it.

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landschaft-171216-1

Here is the final ‘landscape’, well it’s just a planted pot with three stones after all ….   

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c-occulta-171216-1

The tubers and some cuttings, just stuck into the soil, I hope they will root.

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anker-171216-1

These little wire clamps help to keep everything in place.

Photo of the week – Ceropegia vincaefolia

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c-candelabrum-231216-1

Photo: Swati Kulkarni

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