It's a kind of Pu'er tea, produced in southwestern Yunnan. Presently, I didn't find a corresponding term in English. So I would like to call it in Pinyin.

Srry I'm not quite familiar about Chinese Tea sorts. Probably it is a sort of green tea. 滇is abbreviation for Yunnan province. 涧means crystal running river in mountain(my opinion). 大叶means big leave,种stays for cultivation,青is light green，not so dark