Unknown Ipomoea

[Maggi Young]

 From Gerd K.: This nice Ipomoea appeared wherever from in my garden. I have overwintered it inside and planted it in a large pot in spring.       The plant has tuberous roots and as one can see deeply lobed leaves. I would be happy about an identification.

[YT]

Hello Maggi!

I'm not good at ID but it seems Ipomoea pubescens🔍

https://calphotos.berkeley.edu/cgi/img_query?seq_num=632697&one=T
http://www.bihrmann.com/caudiciforms/subs/ipo-pub-sub.asp

[Maggi Young]

Thanks YT!!
 Gerd thought that it was  "Ipomoea lindheimeri ex SRGC seeds from 2013. In the meantime a bell has rung for me after I got a hint from a German Facebook group."

 I think  Ipomoea lindheimeri var. subintegra is a synonym of I. pubescens.