United Kingdom

Strange plant has appeared in my garden. About 15 inches tall. Leaf stems spreading radially from the top of stem. Leaves are very angular. White flowers resemble Convulvulus but never open wide. Fruit is green, plum shaped and is covered in spines ( bit like a conker ).
Seed could have been dormant in the soil ,or from bird feeder not far away.
I now have a second plant nearby

• 29 Jul, 2008