Butterfly flower?

I wished i know what flower it is.. but it looks like a butterfly when the flowers open up during the day and close after sunset.. It gives me a warm, calm and beautiful feeling..

If someone knows what flower or plant it is, please let me know.. ;-)

Now, for the first time in my life, i borrowed a library book on gardening.. heehee.. ;P

my very first plants..

last week we visited the whole stretch of florists along Thomson Road.. and one pot caught my eyes.. it's not cheap but we still bought it eventually.. it consists of 4 different species of plants.. don't ask what.. coz i'm still figuring it out.. ;-) let me know if u do.

Somehow i like miniaturized plants that seems to be in a world of its own..