I don't know what this flower bud is. I saw this flower growing at someone's home garden when we dropped by at Jasmin's house before we go to SM Fairview. We asked permission from someone if we could took some snapshots and she said it was okay.
After a week, same flower bud bloomed into passion. Jasmin took these photos from their neighbor's garden and asked the name of the flower. She was told that they called it "passionara". I googled it and I was glad to know that it is popularly known as "passion flowers or passion vines".
Visit Today's Flowers.