Originally Posted by malystryx

hi this is something that happened in my garden. we had one rose with yellow flowers in our garden and a wild sp which hung over from the neighbours.The different species of rosa were growing close to each other. They were seen to grow a single stem over a period of days. The stems from both plants entwined each other and produced flowers. The flowers were next to each other and pollination occurred. One plant changed its external characteristics i.e leaf shape and colour.
I have not found any reference to this. What is this process called?
Many thanks if someone can answer this