Unboxing …

This time I ordered plants from the Röhner-Versand, for the first time.

Here we go.:

the packet … quite big

lots of styrofoam flakes and a leaf looking out … in fact I’m very happy with these flakes, cause I really need them for draining the plant pots   🙂

the plants, each wrapped in paper and wrapped up again in a paper bag, fine …   🙂

here they are: Ceropegia ballyana (my very first one), Ceropegia radicans, and Ceropegia variegata, the plants are very healthy and quite large, this is indeed a good bargain

What a fine day!   😛

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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

A mysteryious plant – Ceropegia radicans ssp. smithii

It was always an irrevocably fact to me that this form is nothing but an naturally occuring hybrid of Ceropegia radicans and Ceropegia sandersonii, as both species are well known to hybridize readily with each other in cultivation – and in fact there are several such forms to be found under a clutter of names.

It was ….

There are many botanists who accept this plant as a subspecies (or variety) of Ceropegia radicans.

According to the original description the two subspecies of Ceropegia radicans are neither geographically nor ecologically isolated, that means, both occur in the same region, and even share the same habitat (the valley of the Kwelega River in the East London District of South Africa’s Eastern Cape Province).

They are said to differ from each other by the shape of the flower, whose lobes form a cage-like (in the ssp. smithii) resp. a narrowly pyramidal structure (in the ssp. radicans).

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In the year 1911, P. Roth reported in “Die Gartenwelt” the first (documented) artificially produced hybrid of two Ceropegia species.:

“Eine künstliche Kreuzung, C. sandersonii, befruchtet mit Pollen von C. radicans, hatte jedoch Erfolg. Dies ist die erste erfolgreiche beabsichtigte Kreuzung bei Ceropegien.”

translation:

“An artificial crossing, C. sandersonii, pollinated with pollen of C. radicans, yet was successful. This is the first successful intended crossing among Ceropegias.”

There are many such hybrids to be found in the trade today, some go by names like “Apollo”, “Jupiter” or “Mars”, and they mostly are very similar to Ceropegia sandersonii, or even much more so to the plant that we now want to call Ceropegia radicans ssp. smithii, respectively.

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Whatever now the truth may be – the plant shown on the photograph goes back to material that was collected (around 1985) in the wild!

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source:

– Dr. P. Roth: Über Ceropegien. Die Gartenwelt 15(25): 337-339. 1911
– O. A. Leistner: Flora of Southern Africa. Vol. 27(4); Botanical Research Institute, Dept. of Agricultural Technical Services 1980

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The photograph shows a plant that can be traced back to collections made by P. V. Bruyns himself – this is its ‘field number’: PVB 2162, Blue Water Police Station, Kwelegha River, E. London, RSA.

Photo: by courtesy of Friedericke Hübner & Ulrich Tränkle

www.asclepidarium.de

The fifth new addition in 2011

I know, I deserve to be kicked in my ass … but I was in ‘that’ nursery again ….

The newest additions to my collection are named as Ceropegia linearis ssp. debilis (I will talk about this particular plant later) Ceropegia inornata (of which I already have two plants – so I have no idea why I bought another one :-() and Ceropegia radicans.

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Ceropegia linearis ssp. debilis

Ceropegia inornata

Ceropegia radicans