"Polygonatum ( /ˌpɒlɨˈɡɒnətəm/), King Solomon's-seal or Solomon's Seal, is a genus of about 50 species of flowering plants. In the APG III classification system, it is placed in the family Asparagaceae, subfamily Nolinoideae (formerly the family Ruscaceae).  It has also been classified in the former family Convallariaceae and, like many lilioid monocots, was formerly classified in the lily family Liliaceae.
Some species of this genus are believed to have medicinal properties, and some (in particular P. sibiricum) are used as a tisane in Korea, which is called dungulle.
Some Polygonatum shoots are edible, cooked like asparagus, as are the roots - after appropriate treatment  - being a good source of starch.
from Wiki: http://en.wikipedia.org/wiki/Polygonatum
I'd heard of it as a garden plant, didn't know of other uses...