Merremia species

Merremia species;
 
 
 
 
 
https://08511630493324166816.googlegroups.com/attach/68681b060ae3fe31/IMAG0191.jpg?part=0.1&view=1&vt=ANaJVrEuAAgfebKvUhcaqh9R9nPKHTKz0K0fpO26_3FaA2bqfYRKTXqF8fp_vqJ5JrYgFPEfoMnv8HkZlHnEpo-u2BbExZVvbBloPREvTmKFBD7ao9f5Plc

What flower is that? : Attachments (1).  6 posts by 5 authors.
Id please.
A  Merremia..?
The plant in the attached photo is Merremia cordata.
Does not seen to match with illustration from Flora of China (may be due to lack of enough details).
No other posting so far on efi.

 
 
 
 
 
 
 
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