How do I delete albums from Photos app?

Hello:

I am using iCloud Photo library on my iPhone, iPad and Mac OS X Yosemite. I would like to delete some of the albums that imported from iPhoto, as I am having trouble with photos syncing between devices.

I've tried to do it on iCloud and in the app, but can't find a way to delete entire albums.'

Any help would be appreciated!

Cyndi