Now something interesting about the flowers - this info was written to me yesterday by a botanist friend - he also gave me permission to post this text here
"Yes, all Asclepiadaceae have clamp traps, even the Ceropegia, which have both: a cup trap and then inside again the clamp trap. I think it is the only plant family with the orchids that transmits pollinia, which are whole packets of pollen. The foot or proboscis of an insect gets into a rail that is open at the bottom and soon narrows at the top. You can see the rail even in your photo in the flower (there are 5 of them). The foot has to be pulled out of the rail at the top. There at the upper end sit the two pollen packets, which are clamped to the insect's leg with a clamping device (like the jaws of a bicycle handbrake). When the insect has the correct size, it pulls the pollen packets together with the clamp out of the holders and flies around with them. The rail is at the same time the stigma and the next time the insect visits the flower, a packet remains stuck in the rail. This can be observed beautifully with Asclepias curassavica, where bees or butterflies get the pollen packets. Especially nasty is Araujia, which is probably aimed at larger moths and holds the local ones by the proboscis, because they are too weak to tear themselves loose with the clamp body. If everything works, you don't get the clamping, only if the insects are too weak."
Translated withDeepL
I hope the translation is correct ...Maggi could you please look ?
And maybe change something !
Thanks Hans
