I thought they used Tazo -- am I wrong on this?
You are correct. I looked it up and google found that Starbucks does sell Tazo China Green Tip Filterbags. Looking down a few paragraphs there gave me this: "Ingredients: Spring-harvested green teas from China." So I am guessing that is what you get to look for. I still haven't tested all the green teas here and I haven't tried that tea in a while, so I wouldn't know quite what to suggest beyond trying to different Chinese greens if you are looking for a loose tea similar to it. If you simply want to brew the bags, look at temperature and brewing time.
(Link: http://www.starbucksstore.com/products/ ... SKU=623097 )