Common Sweetshrub

Looked sort of like a Calycanthus and it turns out that it's a fancy hybrid of four (!) Calycanthus species and is, as far as I can tall from doing a Google search, a relatively hot item in the gardening world. Our native wild Sweetshrub, Calycanthus floridus, is a rare shrub with dull purple flowers, so I'm not sure how they developed this elaborate hybrid. Interestingly enough, I thought Sweetshrub was a strictly southern U.S. plant, but it supposedly grows here in Massachusetts. Guess I'll have to keep my eyes open for it!

Ahh, that's good to know. Are those long, oval, opposite leaves part of that plant?

This is an interesting flower. Growing in an arboretum, it could be from anywhere in the world, so it's going to be hard to identify. At first glance it looks like a magnolia, but it isn't. Is this a tree? Does it have opposite leaves? It also sort of resembles star anise, genus Illicium. Best of luck getting an I.D.. I'd love to know what it is and where it grows naturally.

Could it be a White Clematis? http://www.redbubble.com/people/diamondwillow/art/1893309-white-clematis

Yes, I think its a tropical flower or Hawaii?

Orchids only have 3 sepals and 3 petals One of the petals is modified as a labelum... I will research more....