By Jakpink
United Kingdom 
I saw a plant yesterday that I can't identify - quite tall - 4ft ish, purple buds with creamy speckles about the same shape, but slightly smaller than a chinese lantern. Open out flowers anbout 1.5inches diameter, similar shape to morning glory. It's not a platycodon. Leaves are like serrated oak leaves.
16 Jul, 2012
Answers
Nicandra physaloides? ('Shoo-fly plant')
16 Jul, 2012
Thank you Spritzhenry!! Nicandra physaloides is exactly what it was. Now to locate one for my garden!
16 Jul, 2012
You're welcome. :-) They're annuals - so you'll need to buy seeds.
16 Jul, 2012
Buy seed......Ahh! Save it from the plant they are easy to grow.
17 Jul, 2012
Yes, I intend to...but I don't think Jakpink owns the plant he/she saw!
19 Jul, 2012
When I first saw Nicandria I thought it was a shrub and spoke to the owner about it. She was only too happy to give me some seed heads. In fact I find the seed heads an attractive follow up to the flowers. It does self seed quite happily as well.
19 Jul, 2012
Hibiscus?
16 Jul, 2012